TBI to Carb swap Chevy Truck Part 2
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- เผยแพร่เมื่อ 7 ก.ย. 2024
- Info and Part numbers are listed below,Any questions please ask....
Carb-Holley 600cfm #0-80457SA
Intake-Wieand Street Warrior #8126
Fuel Reg-Holley #12-842
Kickdown lever (700r)- Holley #20-121
Accelerator and kickdown bracket-Holley #20-95
TPS Kit for auto trans-Holley #534-202
Throttle stud-Holley #2038
Distributor-Factory GM HEI - Accel Cap and rotor kit #8122
Plug wires-Carquest #358126 - Thermostat gasket felpro #35062
Carb gasket- Mr Gasket #54 - Carb studs- Mr Gasket #6345G
Intake bolts-Mr G#6080MRG - Header bolts-Mr G #917
Wire Seperators-Mr G#9728 (2) - Throttle springs-Dorman #59207
Fuel pressure gauge-Mr G # 1561 - Air cleaner stud kit-Mr G #6399
fittings for regulator-(2) 3/8 NPT to 3/8 barb 90 Spectre #5946 (1) 3/8 NPT to 3/8 straight Spectre #5945
Heater hose fitting- 1/2 NPT to 3/4 barb straight- Irrigation store
Brake booster fitting- 3/8 NPT to 1/2 barb 90- Irrigation store
Heater hose- Carquest 3/4- 50' #CQ1727 - Intake gasket-Felpro #1204
3/8 fuel line - 3 feet
5/16 fuel line - 3 feet
3/8 hose clamps (4)pack #AC5F16V
5/16 hose clamps (4)pack #AC52F13V
1/4 hose clamps (4)pack #AC52F13V
Permatex RTV black-#22072 and an Oil and filter change.........
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I have a 91 v2500 suburban 350 with 4L80. This is by far the best video I have watched on doing this thank you!
Good day Warren, I am glad you found my video informative. Thank you very much!
I just got my Van back from the mechanic's, moving it to a buddies place where we can work on it! The n=mechanic gave up and wanted to put a new motor in it (94 Step van with TH400)
If the EFI gives us any grief, I'm going to swap a carburetor in .. once we get it going I'm going to save up for Holley's Sniper II and that'll put it back to EFI. Plan is to grab a new manifold, and a used carb in the intern.
Great video thanks!
Wow, remind me not to go to that mechanic! You and your friend should be able to handle the conversion with all the vids out there plus the fact you have a the TH400 making it easier. Any questions during the conversion just ask!
I have watched a lot of these conversions. Your videos are among the most concise on this topic. Thank you so much from Indianapolis.
Good day Indianapolis, thank you. I appreciate your comment.
Thanks for sharing your experience. I have an 89 K5 Blazer and it runs good, but has a TBI and I want to swap in a carburetor.
Your welcome Duane, It has been a few years now since my conversion and my truck is still running strong.
Go for it ! I just swapped over a 1990 chevy truck.
The milage and performance is amazingly better.
Edlebrock manifold, quick fuel street brawler (Holley basicly) 650 Amazon, and a standard HEI distributor.
Peice of cake ...
Mine was similar. I replaced the ecm.and prom, runs great now
I JUST DID THE SAME TO MINE LIKE A TOTALY DIFFERENT TRUCK NOW, ABOUT 50% MORE POWER
What a difference huh! I was just as pleased when I completed my swap. Enjoy the added power!
Nice job.i'm going to replace my TBI on my 7.4l 454 suburban.I hope it looks as nice as yours.
Good day Joseph, thank you. As long as your not in a hurry, I am sure you can do just as good!
Awesome setup!! Carb is a much better upgrade from the stock tbi, I will encourage you to get a afr guage. Afr guage will tell you where your carb is rich or lean, thats the best thing I did when I went to a carb, very easy to tune and rejet with the afr guage! I believe carbs are better than efi, less wiring and sensors that fail!
Thank you Frank, for the kind comment. Also I will take your advice on getting an afr gauge. I do wish to dial in the mixture to its optimal setting.
No carb isn't a upgrade from TBI lol it's easier but definitely not a upgrade lol
@@jonathanlawson4667 Actually I just switched over to a carb from EFI.
I found that it is much better in that I get better gas milage and much better throttle response. Yes, it is easier as well. Way less problems and issues. I have a 1990 chevy truck and went from 6 mpg around town to just under 10 mpg.
Hyway is right on @15 mpg.
No regrets other than I wish I had done it sooner.
Great video though by far the most helpful ive found for the conversion.
Well done man great project for anyone with a tbi
Thank you David!
Excellent video !!!! Thank you for giving out part numbers, you saved me tons of time and energy !!
Your welcome! I’mglad you found it informative. I also listed everything I used for the conversion in the video description section.
Very useful video 💯 I’m starting the swap hopefully tomorrow
Glad you thought it was helpful. If you run into any problems I suggest checking and reading through the comment sections of all the videos I posted. A lot of issues people ran into were discussed and remedied there. Thanks!
Exactly what I was looking for my TBI Conversion ! Thanks for Posting !
Your welcome, I’m glad you found the video was informative, mission accomplished.
Great video...thanks for info!
I BEEN THINKING ELILIMINATING MY TBI AND GO WITH THE EFI BYTHE WAY GOOD VIDEO MY BROTHER..
Thank you.
Great conversion lm starting on a 1998 Tahoe thank you.
Your welcome Mike.
Thanks for this my son has 2 do this
Your very welcome. I have about 6 videos posted on the subject so most all your questions should be answered.
Scholar and a gentleman you are.
Thank you James.
i've thrown everything but the kitchen sink at mine but i'm removing the sink right now to see if that helps.....lol
You have vortec heads? Your swap looks almost factory looking. Yeah i got two 5.7s, a k5 89 an 88 gmt400 smog version tbi's. Each with a twist.. both run but not as good as it should. I hate em an i don't hate things. Just stressful. Im gonna duplicate your build. Just looks so darn good. 👍
nicely done bro
Thank you Ruben...
When my tbi was heating the manifolds cherry red it was the collar on the distributor broke and was retarding the timing and letting the combustion straight into the manifolds. Lean heats up the engine hot exhaust is fuel burning in the exhaust.
Thank you for your knowledge and input Nick, much appreciated !
@ crewyou07, you're saying your truck engine can breathe so much easier and has more power, just think how much better your truck would run with a set of long tube headers with at least 2-1/2 inch dual exhaust with a set of non restricting turbo mufflers, along with a electric radiator cooling fan.
Good day Alan, sure all you say is very true. But that added expense was not needed in my application. I also like the idea of getting to my starter and other components without having to remove the headers.
Do you know what i can do. I have a sbc with tbi intake but i want to put carburetor , what intake i can buy . The 4 holes of the center are on angle
I have all the info you are asking for in the video description directly under the posted video.
my brother all you needed to do is get you somebody to reprogram your computer chip for you and you would have been find...because i did it with my blazer and havent had a problem..its a company in littleton colorado
Finna Do My 99 Tahoe Like This It Should Fix The Vats Hopefully? 🙏
Let me know how you out when your done. I have five different videos on the conversion they should answer any questions you have.
On the passenger side: where did you vent that valve cover tube ? I see how you did the power booster and the vent on the driver side looks like rear tube from tbi.
Hello Jason, my passenger side cover only has the PCV provision. The drivers side, yes I used the tube from the TBI. What I did was I took the flange that was on top of the original TBI unit and put it on the carburetor. Then I took the tube and flipped it upside down to make up for the difference in height between the two set ups. The power booster is connected to a fitting in a spot provided on the back of the intake. I explained that very procedure in one of the five videos I made pertaining to this swap.
Awesome videos!!! I bought a 1987 chevy V10 and the 305tbi overheated and blew up on the drive home. Swapped in a good running 78 350. Added headers and dual exhaust, radiator, new carb, HEI distributor, alt, starter and fuel pump (I disconnected the sending unit after watching a different video 1st) With a full charge it starts fine, however, the alternator makes a bad noise when the excitor wire is hooked up to it and the negative post gets extremely hot. When I disconnect the alt wire it sounds and runs great but obviously it's not charging. All of my grounds are clean and have good connections. Any suggestions before I take it to a wiring specialist?
Good day friend, mmm are you using a wire that was provided with the alternator for the exciter?
@@crewyou07 Good day to you, yes, I believe so. It's an older 3 wire alternator. And it runs fine on my 85 k-20. I'm not the greatest mechanic and I think I'm calling the "trouble wire" the excitor incorrectly. When it is actually the positive to the battery. That's what my friend called it. And, it stuck in my head. It's the large positive wire from the alternator to the positive battery post that makes the neg battery post hot, when hooked up. The 2-wire plug is still connected but not this other wire. So right now, it's running on battery only. I've only driven it for a few miles after the swap. Thank you for taking the time to respond and any help you can give. Steve
Hi crewyou07, I took the alternator in and it checks out good and absolutely no whining from it. My 2-wire connector was corroded and caked with dirt and maybe oil, so I replaced it and was hoping that was my problem. I also changed a few other wires with questionable terminals and cleaned all grounds, etc. When I started the truck, the alternator is still whining so I shut it down. I'm almost ready to swap the alternator off my 85 k20 or this one onto it, but I'm worried that I will mess that truck up. What are your thoughts? Any suggestions on why it is making a bad whine and the negative post hot?
Great work sir. Very thorough and specific. Too many people ramble on and completely vear off topic. You're explanation was dead on accurate and informative.
Question. I recently purchased a 1987 Silverado V10. 1/2 ton 5.7 EFI with horrible fuel consumption. I am hoping to duplicate your exact build. To your knowledge is my 700R4 electronically controlled? I'm still learning about these EFI motors. It is also a Jasper crate as well. Thank you
Thank you Mando for your kind words. As far as your 700R4, pre 1991 is not electronically controlled. If your transmission is original to your 1987 truck then you the better of the bunch. The only thing you will have to do for the transmission to shift properly is to hook up what is called the “tv cable” and you will be good to go!
@@crewyou07
Wonderful news! Thank you sir for validating my concerns. My fuel mileage is absolutely horrible. I'm confident this conversion to carburetor will allow my sbc to breathe and perform much better. Thank you again.
@@mandofernandez5161 your welcome! Let me know if the conversion did increase your mileage and performance.
If you still have your full list I would love to get all the info I can . I have a 88 with a tbi 5.0 mated to a th400 trans . I just bought an older running carbed 350 that I wanna drop straight in without having to rip and rewire . What ever I can tie and splice into would be helpful .
Good day, The full list is posted in the video description. Hope the transplant goes smooth.
Thats bad ass bro good job
Thank you Tim.....
stand alone harness if so which one? I got a 90 single cab k1500 with a 5 speed. Wondering how it'll work with a manual transmission
Bought a gen 1 tbi crate, ordered a street warrior intake. Correct center bolt angles. NO rear water crossover passage. Also gaskets that fit the heads has the back passages all but blocked, just a small drill hole. I read that GM had trouble with gasoline pooling in the back runners of the tbi set up. I guess getting the back of the motor hotter flashed off the gas heading to #7 and #8. Called weiand and they said to drill and tap a crosser over hose. F that. Does anyone know what intake dual/spreadbore that has tbi center bolt angle (don't want to mill out the angle and use adapters) and has rear coolant passages? Did chevy hire some Ford designers for this shit, and jegs won't answer the phone anymore.
www.jegs.com/i/Edelbrock/350/2104/10002/-1?parentProductId=745125
Gonna try to make this a short question, I have a 94 k1500 tbi. Swapped with a nv3500 manual trans. Motor might be shot but do you have any insight on the carb swap for the manual trans? It does have electronic clips on it (I think for the speed sensor or something) so I know the computer has to read something from it but I wasn't sure if any problems would occur for the swap. Awesome video man, looks really good!
Good day, you can chose any carb you desire to put on your truck. Though since you trans does have electronic controls you will have to get a TCI controller. I am going to come back and edit this message with a link to a fellow TH-camr who knows more than I about the controller.
Here is the link to the video explaining the controller. Let him know I sent you over. Any other questions just ask.
th-cam.com/video/RtOvkAm5w-o/w-d-xo.html
I have a 91 camaro rs that came with the v6 but had installed a v8. I have a PQY Performance fuel regulator but my question is what should I do about fuel getting to the carb
Why didn't you go with a performance distributor
Good day Ray, I went with a stock GM HEI unit because I already owned it and worked for my application. The only mod I did do was put lighter springs on the centrifugal advance weights.
Hola saludos instale un leva algo poco mas agresivá igual tuve que instalar carburador por lo k era demasiado el paso de gasolina y llegue a otro problema por k instalé un carburador de 850 cfm y sigo con lo mismo
Buenos días, ¡vaya! Incluso con una cámara un poco más agresiva, 850 cfm es bastante. Tengo un motor de 432 tiempos con un árbol de levas muy agresivo y 800 cfm es suficiente. Le sugiero que hable con un constructor profesional y le cuente toda la información sobre su motor (tamaño del motor, especificaciones de levas, configuración del escape, etc.) y deberían poder recomendar el carburador de mejor tamaño para su aplicación.
@@crewyou07entiendo , gracias si ya después que instale ese carburador me di cuenta del error ya voy aceptando la idea y el gasto de otro, pero sabes no ay ningun video donde cambien las espreas de arriba por donde entra el aire y calme un poco ese ralentí agresivo que no equilibrar la mezcla
HOW DID U ADJUST THE TPS AFTER U GT EVERYTHING HOOOKED UP?.. WHATS THE READINGS ITS SUPPOSE TO BE?
I used a volt meter. 0.5 to 0.8 at idle
Hey 4 years ago and still helpful however, i did the purple and white to tach and that doesnt seem to kick my pump on. If it (94 Yukon manual trans) sits i have to jump the relay with a piece of wire until i hear float full then it will start will run awesome for a time which seems longer than what's just been brought thru line. New fuel pump monotonously checked all wires and ignition wires from front and to tank.. Not sure what the issue is. I was told the gray wire in the 4 wire plug which has the purple with white was to fuel pump and to wire that to ignition power when key on.... None of these vids here in the last 2 years of my build have mentioned that period!! Any help??
Good day Ty, the only thing I know is that it could be one f two at the four wire connector. Is a purple & white or a blue wire for fuel pump power.
What degree timing are you running ?
Hey bro I did a carb on my 90 Sierra 5 speed it all works fine. But my speedometer stop working and my fuel gauge reads full all the time.. what could be the problem.
I want a cahhhhhh-buh-rah-ta too!
What did you do with the fuel pump? My fuel pump will prime but it wont stay running.
I have a 1990 5.7 and wanted to do the same thing. Would a HEI distributor from a 1984 5.7 work?
Yes Brandon it will, I also used a HEI distributor from a mid 80's GM 5.7 I had in my parts inventory.
Was any other sensor feeds other than the TPS needed to make the transmission shift right?
Good day, I was able to get my transmission to shift with just the TPS though, I have heard folks having to use a TCI unit to get there transmission to shift properly.
@@crewyou07 I made a trimmed down wire harness for an 1982 old box Chevy that the customer wanted to use a modern 4L80e (1998) to use with a used ecu that matches and was laying around. Looks like all in need is to power up the orange wire to 20A fused battery and two pink wires to key on power to two 20A fuses, grounds, hook up the tps, rpm signal, and map sensor and I’m in business. My own truck, the Ram, already had a 5 speed in it so running a carb on it was pretty easy.
I have a 4l80 trans ,, how do i get the electric signal for shifting.??
I am trying to do the same with my caprice.
What all do you need to do for the trans part of the swap. I’ve read that you need certain wires hooked up to certain parts of the distributor, the tps sensor on carb and is that all? And if so does the trans fully function. I have a 60e
Good day, I suggest you watch all 5 of my videos. I go into detail on your very question, Thank you.
I have someone doing the same conversion on my el camino but he can’t figure out why it’s flooding at 5psi any thoughts anyone?
Great video. I'm doing mine now. Out of curiosity did you cut out all the unnecessary wiring that went to the TBI?
I did not cut out any of the wiring for the Tbi components. Left everything there.
That fuel pump regulator 12= 842 does it have a in .out. n a return?
www.holley.com/products/fuel_systems/fuel_pumps_regulators_and_filters/regulators/carbureted_regulators/parts/12-842
I'm trying to do the same thing , switch to carburetor from the tbi fuel injection it's giving me years of problems. So could I make a complete list of everything I need besides the carburetor and intake. Thanks
Hey Corey, I have a complete list of everything I used for the swap in the video description.
Will the Cruise Control still work with the throttle cable mount ?
Hello Jason, I did not try to hook up my cruise control so I can not tell you for sure?
whats the intake part number #8126 not coming up i see a 7101? any help its going in an 93 square body s10
www.google.com/search?q=weiand+intake+8126&ie=UTF-8&oe=UTF-8&hl=en-us&client=safari
@ crewyou07, what did you do for the EGR valve? I'm asking because I don't see it on top of the intake?
Hello Alan, I was able to delete because the intake I used is egr delete. Wieand street warrior intake.
I have a 1988 Jimmy Classic with a Dead 5.7 350 V8 that runs Throttle body..and I'd like to Add power to my truck. Can I Simply swap in a Complete 350 Vortec that's carborated much like Your set up.
Hello Eric, It sounds like you should be able? Tho I would need to know all the details of the engine you are using for the swap to be sure.
I have an 89 K 2500 Muncie 3 speed. mine should be easy. Can you give the part number for the manifold? I'm one of those guys who thrown everything at this problem. bought the truck with a bad motor. thought if I put a crate motor in it it would run like new with that 3 speed. the unfixable problem was probably the reason why it had a bad motor. LOL. Thanks for helping everyone.
Good day, It is Wieand Street Warrior #8126,The part numbers for everything I used is listed in the video description.
Any idea if a bad tps will cause my transmission to not shift out of first? I have a 454 ss with a Holley carb and this same tps kit and am trying to troubleshoot my problems
Yes a bad tps most certainly would.but checj settinf first. Voltmetet 0.5 at idle 4.2 full thottle
I have a 93 Chevy pick up I did the conversion swap from TBI to carburetor use the purple and white wire for the fuel pump it runs for a moment and then stops and then I’ll run out of fuel Am I missing something
Good day, Craig, I am, need more info. If your using the purple and white wire, I have to believe your using the factory in tank pump yes ? If so where is the wire connected to ?
I figured it out for some reason I hooked up the purple and white wire to the power instead of the tack port and now it keeps running thank you
Did you have to leave the map sensor and any other sensors from the tbi set up connected for the computer to read so the transmission would shift properly?
Hello Bruce, The only sensor I needed to keep in the engine compartment was the TPS (throttle position sensor) in order for my transmission to shift properly.
INSTEAD OF THE CARB WHY U DIDNT GO WITH THE EFI SNIPER AND PUT ON THERE
I have the 4L60, so the only connector I need is the TPS to shift properly?
no, you will need a transmission controller as well, unless your trans has TV cable... they are about $500 from TCI unless your trans has TV cable
Hey so I got it all hooked up but I’m stuck on with fuel line is the return line? If you still remember I would appreciate the help
Hello Will, Ok I am guessing you want to know what to do with your return line? If you are using the factory in tank fuel pump you must use a 3 port fuel pressure regulator and put the return line to the port marked "return" so to insure you do not burn up the fuel pump.. if you are using an aftermarket electric pump or a mechanical pump you can eliminate the return line all together.
how did you wire up the hei distributer
What if you plan on installing a mad ls ignition box instead of hei? What wires do I need for it to work!
Good day Frank, I am not a fan of MSD products. I have had experience with two different vehicles with MSD units and had issues with both. I suggest the factory HEI because of the ease of install and parts availability. If you are dead set on an MSD unit I do not have the answer for wiring it up.
I'm planning to use 94 tbi 16168625 pcm to make a standalone transmission control for 4l60e. I'm trying to gather up as much info as I can.
what color wires did you hook up for the wire that runs to the computer.
Hello Braeden, The only wire I had to splice into was a Purple & White wire (tho the wire could be Blue) from the 4 wire connector that plugged into the bottom of the stock distributor and plug that wire into the connector marked tach on the HEI distributor like the one I used. By doing that it insures your in tank fuel pump energizes.( if that is what you are using for a fuel pump)
Can i just cut the rest of the wires like egr
Yes Cesar you can cut all non essential wires.
yeah great vid lots of good good info thanx man im in ma you?pahk th caw lol
Thank you, glad you found them informative. Tried to address all the things I had a hard time getting info on. yes I am in Mass also.
I'm doing a 97 Vortec 5.7 to a carb setup how do I get rid of the governor
Good day Kyle, that I do not know ? The conversion I did covers only 1988 to 1995. Your year is a different animal. You will have to search for conversion info on your year engine.
Hey there! I was wondering if you rpm tachometer worked on your truck after doing the conversion? If so I what all has to be done to make it work? Thank you!
Hello Victor my truck does not have a factory tachometer so I can not answer your question I would have to do a little research.
Thanks for quick response! One other question... what all wires did you connect on the HEI distributor? I appreciate your input!
Hey Victor, only one wire was needed to power up my HEI distributor. I used the wire the to the original coil and ran it to the port labeled BATT on the HEI distributor.
The 4l80 is an electronic transmission, so what’s controlling it?
Good day, my computer, speed sensors and the tps (throttle position sensor.
Love your set up I have a similar set up with 4l60e I have the Tps from Holley but transmission is still in limp mode I am curious did you have any problems with yours?
Good day Gilbert, I have the 4L80e. Yes, I did have problems with my transmission after the swap and here were the problems (1) I had an intermittent extremely hard shift from 1st to 2nd. (2) My transmission would not kickdown during passing mode and It would drop down from overdrive to 3rd and would not go back into overdrive. The problem I found for each are as follows: My extremely hard shift from 1st to 2nd was a broken wire on the connector for the speed sensor at the tail shaft of my transmission. Fix? re soldered the wire to the connector. My no kickdown, or overdrive? was a faulty TPS that came with the Holley kit I purchased for the swap. Fix? Replaced the TPS (throttle position sensor) and adjusted it to 0.5 volts at idle and made sure it was between 4.1 to 4.7 volts at full throttle. The throttle position sensor must be within those parameters for your transmission to operate properly.
Ok thanks for getting back to me
Your welcome Gilbert!
Now with the 4l60e would I still do the same as 80e? And the kick down be the same?
Did you use the stock computer for trans? I got the tps sensor on Carb and it stays in second and third that it
Hello Will, Yes I did use the stock computer. First off did you adjust your TPS to the required voltage? Tho I should asked you, which transmission do you have in your vehicle?
I been wanting to do this to my 94 I've done everything and keeps getting a check engine light for egr. All parts I did were AC Delco. What did you do as far the computer is the check engine light on? Also did you delete the egr?
I also have a carb-swapped 94, though I used a non-EGR intake. Unless you have a means of programming a complete custom PROM, you'll be stuck with a check engine light. I just took the bulb out.
@@Jerkwad152 how long have you been running with a carb and what brand? I think all the 94's have the same issue. I also have another 94 same problem lol. Then I have a 84 I put a 92 350 stock bottom end with intake, carb and small cam and it runs good but I have a edelbrock avs carb that I'm gonna switch out for a Holley or summit carb and I'm sure it will run a lot better
@@squarebodyg5354
I've had an Edelbrock 1406 for just over a year now. It's been great. There's some quirks to the TBI heads and valvetrain that make them more fiddly to tune than either the old carb heads or Vortec heads. Mostly, they're just junk, and I'm going to slap better parts in there pretty soon.
How did you hock up the. Disturbor
Good day Robert, I did go into detail on the hook up in my video series.... Since I used a late model factory HEI distributor all I needed to do was run my switched 12 volt supply that ran to my original coil to the positive terminal on the HEI distributor.
Did you remove the catalytic converter and how to a true dual exhaust ?
Hello Sam, I did remove the catalytic converter and I am running the factory single exhaust.
Where you get that air cleaner from?
Good day, that air cleaner was given to me. I will see if thereis a number on it and I’ll let you know if I find out who makes it.
Hey buddy, did you notice more horsepower going to carb? Seriously thinking about this with my 95 350
Hello Dale, This is going to be a long answer. Yes I did notice a little more power going to a carburetor. It was in the mid range band but here is the reason why. Before my conversion I notice a slow decrease in power with my K 2500 over a 3 week period of time. My diagnosis lead me to the TBI system. The repair would have superseded the cost of doing the conversion so that's why I did it. It was pointed out to me by some folks who commented on this conversion is to change the cylinder heads. Apparently these TBI heads do not flow very well so by changing the heads you will most certainly add some ponies. Or as a lot of folks are doing also is adding a hotter camshaft and headers. I was not looking to build a muscle truck so I kept it as simple as possible.
crewyou07 , I see. Thank you very much for your video and quick response and definitely the part numbers in description. I'm wanting some muscle. I'm planning on getting headers along with carb, if I do carb. And thinking about new heads from summit.
how are the regulator fuel lines connected to the factory lines..thanks
Good day, The fittings I used were purchased at Auto Zone, Spectre part number 5946 for the in and out and Spectre part number 5945 for the return. The fittings have barbed ends. I cut and flared my factory fuel lines and used rubber hoses from the lines to the barbed fittings. The hose clamps I used for all the fuel line connections were a solid band type, not perforated like radiator and heater hose clamps. hope that helps...
A HAA’AD time
99 5.7 vortec engine out of suburban
I would like to use a Quadrajet would the throttle position position work on it?
Hello Justin, The TPS kit Holley sells only works on Holley carburetors. I do not know of any bracket kits that are made for the Rochester Q-Jet. When I was doing my research I came across a video of a guy who fabricated his own TPS bracket for his Quadrajet, It looked like a lot of work. Unless your fabrication skills are pretty sharp, I would suggest going with a Holley carburetor.
Justin, I have recently found out that if you have the 700r4 you do not need the TPS (throttle position sensor) Here is the link to the info th-cam.com/video/qOlbkFgACt4I/w-d-xo.html
what kind of center head did you use and where did get it
Center head??? do you mean the intake manifold?
Did you rejet the carb?
Good day, no I did not re-jet the carburetor. The factory setup worked great for my application.
Hey, Do you need the TPS for the 700r4? Thanks like the vid!
Yes David you do. You have to use the TPS if you are running a electronic controlled automatic transmission.
I have a 1990 and it has the 700R4/4L60 with a TV (throttle valve) cable. It is not electronic and does not require the TPS for it to function. The only electronics it has are the speed sensor for the speedometer and the reverse switch for reverse lights. But, I believe that if you have the 7004R/4L60E (E for electronic), which was introduced in the mid '90s, you need to retain the TPS for trans and converter lock-up function.
Yes, 69GTOby1 is correct, if you have the 700r4, 4L60E or the 4L80E you have to install the TPS sensor for your converter to lock properly.
Hello David, it was brought to my attention that you do not need the TPS for the 700r4. Here is the link that was sent to me th-cam.com/video/qOlbkFgACt4I/w-d-xo.html
Any issue with vapor lock?
Hello Luis, I have had no issues with vapor lock.
How did you run your brake booster? I'm about to attempt to carb swap my 88 c1500
Hello Darryl, I explained how I hooked up my booster in my first video. Anyhow here goes I used a brass 90 degree elbow and threaded it into the port provided at the back of the Wieand intake I used.
Got it all hooked up but I'm stuck. How do I get power to the fuel pump and what's the power source for the how? I have the purple and white wire connected to the tac port.
Typo what's the power source for the hei?
Hello Darryi, I explained the HEI distributor hook up in my 1st video.Go to the 3:40 mark on the link I have here: th-cam.com/video/0_j3RiSAj3I/w-d-xo.html
Notice any power gain?
Yes, I stated my power gain towards the end of this video.
What timing degrees did you use please
Hello Xavier, I used a vacuum gauge to set my timing, I set it at 18 inches and that worked well for my application. Tho I received a comment from "My Truck Your Trash" saying that 8 to 12 degrees BTC is optimal.
How did u hook up the heater hose
Hello Danny, The Weiand intake I used had the water port on the front passenger side of the intake..Which I believe most replacement intakes have them it that location. The thread size is 1/2 NPT so I went to an irrigation supply store and bought a brass 1/2 NPT to 3/4 straight barbed fitting and used that for one hose. My other hose runs to a fitting on my radiator.
How did you wire the tps
Good day, how did I wire the tps ? I explained it in detail in my video series. Anyhow I bought a bracket from Holley to attach the factory tps ( which I left wired and off to the side knowing I needed it ) to my Holley carburetor and adjusted it to the factory parameters outlined in my videos.
my brother i dont care what no body say fuel injection is always better you shouldnt have never change to carb..
yeah until the wiring harness starts breaking down and you can't find the issue plus TBI is the worst induction GM ever built
What intake you use??
Go to 4:05 and listen.......
@@crewyou07 can u list part number
What did the total cost you?
I spent just over 900.00 using all brand new components except the distributor which was free.
@@crewyou07 ...Thank you for getting back to me so fast. I wanna swap mine over to carb too. I appreciate the information.👍
@@tritonbradford1688 You are more than welcome Triton.
Will all this work on a 94 4.3?
Yes it will David.
@@crewyou07 Thank you!
i didnt see your coil ,
You won’t with an hei distributor, it’s mounted in the cap.
Could you send me a parts lest thank you.
Hello Mike, my entire parts list is posted in the video description section. Let me know if you see it?
Chhaaaaaaaaaaaaaabarator..
How did you wire up the hei distributor
Good day, the distributor I used was a late 80’s HEI unit a friend gave to me. I used the positive wire (mine was pink) the went to the + side of the my original external coil and ran it to the terminal labeled BATT on my HEI unit. Hope that answers your question.
What is your mpg on city and highway?
16 to 18 if I keep my foot out of it
@@crewyou07 That is pretty good. It's better than fuel injection based on those numbers. Thank you for your video is helpful.