Super clean tuned port man... I've got a 85 Z with a 383 tuned port as well. I like to think I keep mine clean and good looking but I've got to hand it to you.....Thats the cleanest Ive ever layed eyes on. Nice to know there are other people who still put faith in the tuned port system......
Very informative video. I own a 88 5.7 liter with 7,330 original miles. That has set for 9 years because of having spine surgeries. I am finally able to work on getting my car started. And your info on TPI will be very helpful. That is one very nice looking car you have. Thank you for taking the time to make this video it's going to be a great help.
SIR !! I wanted to let you know that I appreciate your video, it's valuable information, and your efforts in creating a positive informative and important video. Oh yeah, and that looks like a perfect diamond of a car. I'd like to see the rest of it!
First off that engine bay! Nice! Thanks for explaining all of these sensors. I’m trying to get my 87 350 tpi running after previous owner gave up 15 years ago
Videos like this are priceless. You explained with technical detail how this engine management system works and provided visual aid. I should have to pay for this. Guess its car porn.
Where in the Hell did you come from,WOW!,amazing to find someone who is good at telling us how to works,I have a 91 vette 350 and now I understand much more,Thanks very much,now you made me have to detail my engine compartment,cool
Very good video. Accurate & clear explanation. I only came here because of the thumb nail, and had to see the car, but after actually watching it, i can confirm that he knows what he's talking about & explained things very clearly. I'm actually glad to see that, because all to many others making videos don't have a clue &/ or mislead the watchers. Keep up the good work bro. Also, that's a very well done car! Your color scheme was very well balanced.
Me and my brother have been trying to get his 85 vette to behave and run right. We’ve been chasing sensors and connection issues for over a year. I’m no stranger to older EFI stuff, or principles of engine management in general. Diagnosing these engines is HARD.
looks great! i love the low end torque the L98 has. I went with some AFR heads and ASM big tube runners, along with a big time port and polish job on the intake and plenum. It really made a difference! it pulls hard now.
Just got rid of a monte carlo super sport with the same motor. It had good power, but too many fuel issues for me to keep it. It started running funny after about 2 weeks.
Hey Rick I’ve got an 87 IROC Z L98. Engine runs beautifully when cold but then after a couple minutes of driving and warming up it starts to stumble idle roughly, also feels like there’s a lack of power. Has new fuel pump, fuel filter and oxygen sensor. No check engine light. All injectors ohm out at 16 ohms when warmed up. Any ideas what it could be?
Hi, and thanks for the video. Original owner of an 86 IROC and I'm ready to go to a 383 myself. Would be very interested to learn some of the details of yours. Specifically, compression ratio, camshaft, injector size, and whether you had prom custom burnt for it and who did it for you if so thanks
I have a 1985 TA, 5.0 with T.P.I. I bought it new , original owner. I that you extremely knowledgeable with this gen of T.A.s. I live in California where emissions are so tough for a older cars to pass.every 2 years i have to cross my fingers that it will pass and most of the time through a bunch of $$$ at it to pass. Usually it's my N.Os that will fail it. I wanted your thought on if I should try and put a cooler sender for my electric fan to come on sooner than the the O E M.? also when its cold, it will have a hard time idling until it starts to warm up. Any thoughts of a sensor that I can replace or change? thanks for your time and very nice Engine Bay.
I have a 86 having a hard time starting but when apply starting fluid it fires right up and stays running until turned off and then the process repeats. What could be the reason behind it? Plzz help for bless
@ Julian Victor, Oh yeah! Just had to replace the motor mount on the driver's side last week due to the torque! I have a lot of mods though. It's a torque monster for sure!
Thanks for the info!! i recently got a 87 vette with the TPI 350. I know nothing about them so i am doing some research. Does anyone make a code reader for these?
Now, what kind of process are you looking at Mechanic wise? If you get a fuel leak due to that fuel pressure regulator going bad in let’s say a C4 Corvette?
Any tips on how to wake this engine up? Is there anything that we should upgrade that is worth more of our time than others for this particular engine? What do you recommend!?!?
Not really. Would be awesome to have an SLP intake like this guy has on his and a 52mm throttle body. You can contact Hyper Tech and give them a mod list of things you've done to upgrade and give them the number from your factory computer chip and they will make you a high performance chip. Other than that, Holley makes a TPI that comes with a harness and computer that you can Dyno tune, but that's expensive as hell! I have an 87 GTA 5.7 TPI that I put headers and a 3" Flowmaster exhaust on. I also put a MSD distributor and coil and a K&N cold air intake, dual Flex-a-Lite fans and a 160 thermostat. Also put a 52mm throttle body on it. I did the thing with Hyper Tech and got a chip, it's pretty strong now! I'm really about to wake mine up with an LS and T-56 manual. Hopefully I'll have it done by the end of the year!
I am fixing up an 87 T/A. I noticed that the top vacuum line on your throttle body is capped. Is it a special cap or just plugged. Any vacuum line you are not using?
chuck lucas i’m putting one in my 75 stepside luv with a t56. my dad had one when he was younger. he told me about it and explained it and i’m beyond excited to have one after 6 years of searching and finally getting to put one together in this truck
Sorry, but TPI was not way ahead of its time. GM went to Bosch for the electronic fuel injection part. It has standard (for the time) Bosch fuel injectors, and everything else is Bosch, or Bosch-compatible. The Tuned Port part is the intake manifold itself. GM power train engineers designed it for low-end torque, which is the reason for the very long intake runners. The fact is, ALL all engines have 'tuned ports'. Chevy marketing guys just chose to use that as a catchy name. This system was a huge leap forward for GM, but was nothing special in the broader world of EFI.
@@goneflying140 The GM TPI system is also digital, and you can also get a variety of custom chips for it. Rochester actually produced GM's components under license from Bosch. The Motronic in your 1987 Porsche and the Rochester system in the Corvette are equal in sophistication, because they are essentially the same system. Cool Porsche, BTW. But, I have a 1988 Corvette, which snacks on Porsches of its generation, due to its superior design and execution. Porsche-smorsha. You have been served! :)
This engine confuses the hell outta me. I have a 305 with the t5, and the lines, wires and all that is so overwhelming. Not to mention the smogpump and all that garbage.
CHOP GOD You don't have to have money, just tools, a factory service manual, a laptop running TunerPro and the interface cable for the OBD1 connector. That stuff and an account on thirdgen.org and you're all set. Fuel pump, relays, temp sensors and injectors are the most common problems. Vacuum leaks are not allowed.
That's the most gorgeous TPI engine I've ever seen. Well done.
No the factory tpi looks the best
Super clean tuned port man... I've got a 85 Z with a 383 tuned port as well. I like to think I keep mine clean and good looking but I've got to hand it to you.....Thats the cleanest Ive ever layed eyes on. Nice to know there are other people who still put faith in the tuned port system......
Well done keeping a Third Gen. tpi engine bay clean! It's nearly impossible to do. Great summary and a must-watch for everyone with a tpi system!
Very informative video. I own a 88 5.7 liter with 7,330 original miles. That has set for 9 years because of having spine surgeries. I am finally able to work on getting my car started. And your info on TPI will be very helpful. That is one very nice looking car you have. Thank you for taking the time to make this video it's going to be a great help.
by far the best strait forward information , you my sir are the man.
SIR !! I wanted to let you know that I appreciate your video, it's valuable information, and your efforts in creating a positive informative and important video. Oh yeah, and that looks like a perfect diamond of a car. I'd like to see the rest of it!
Beautifully done….
Very good explanation on how the TPI is laid out and set up.
First off that engine bay! Nice! Thanks for explaining all of these sensors. I’m trying to get my 87 350 tpi running after previous owner gave up 15 years ago
I agree with what u said about them being ahead of their time,I loved it.
Just got my 3rd 87 trans am! Thanks for the video!
Videos like this are priceless. You explained with technical detail how this engine management system works and provided visual aid. I should have to pay for this. Guess its car porn.
Where in the Hell did you come from,WOW!,amazing to find someone who is good at telling us how to works,I have a 91 vette 350 and now I understand much more,Thanks very much,now you made me have to detail my engine compartment,cool
Very good video. Accurate & clear explanation. I only came here because of the thumb nail, and had to see the car, but after actually watching it, i can confirm that he knows what he's talking about & explained things very clearly. I'm actually glad to see that, because all to many others making videos don't have a clue &/ or mislead the watchers.
Keep up the good work bro.
Also, that's a very well done car! Your color scheme was very well balanced.
Incredible paint job
Thank you for the very informative presentations sir.
this is super clean
Thats the nicest and cleanest L98 ive ever seen 🤩
Me and my brother have been trying to get his 85 vette to behave and run right. We’ve been chasing sensors and connection issues for over a year. I’m no stranger to older EFI stuff, or principles of engine management in general. Diagnosing these engines is HARD.
Awesome video thanks for spending the time .
looks great! i love the low end torque the L98 has. I went with some AFR heads and ASM big tube runners, along with a big time port and polish job on the intake and plenum. It really made a difference! it pulls hard now.
The runners can be installed in one day but port matching it would take longer. It's a project you can do yourself and the info is out there.
@@wtsig76 Would be great to find a SLP intake and runners like this guy has! I've been trying to find one for years, they're hard to find!
Definitely ahead of their time just wish the tpi’s could breath better in the upper rpm but that low end torque is wicked amazing
They can with an SLP intake like he has on this engine! I been trying to find one for years, they're very hard to find!
chuck lucas the GTA always have a different set up there no where for air to really get in there except from underneath
That is an insane looking engine bay!!!
Too much Red! I would love to have that SLP intake though!!
Nice work. A lot of prep to have that much red.
I can see you do "not" like the color red. Actually it don't look bad surprisingly. Enjoyed the video lots of good information.
Just got rid of a monte carlo super sport with the same motor. It had good power, but too many fuel issues for me to keep it. It started running funny after about 2 weeks.
i have a 87 gta 350 thanks for the info man.
Hey Rick I’ve got an 87 IROC Z L98. Engine runs beautifully when cold but then after a couple minutes of driving and warming up it starts to stumble idle roughly, also feels like there’s a lack of power. Has new fuel pump, fuel filter and oxygen sensor. No check engine light. All injectors ohm out at 16 ohms when warmed up. Any ideas what it could be?
BROTHER!!!! Man imagine me going to TH-camU and stumblin' on to your page!!! Know this car well!!! HMU MAAAAAAAAN
When the computer advances the timing, how does it physically do it inside the distributor? Do those little triangles on the outer ring move?
Great video, I am researching putting a TPI on my 383 in a Chevelle...I would need an aftermarket control unit...any advice?
perfekt thank you
Hi, and thanks for the video. Original owner of an 86 IROC and I'm ready to go to a 383 myself. Would be very interested to learn some of the details of yours. Specifically, compression ratio, camshaft, injector size, and whether you had prom custom burnt for it and who did it for you if so thanks
I have a 1985 TA, 5.0 with T.P.I. I bought it new , original owner. I that you extremely knowledgeable with this gen of T.A.s. I live in California where emissions are so tough for a older cars to pass.every 2 years i have to cross my fingers that it will pass and most of the time through a bunch of $$$ at it to pass. Usually it's my N.Os that will fail it. I wanted your thought on if I should try and put a cooler sender for my electric fan to come on sooner than the the O E M.? also when its cold, it will have a hard time idling until it starts to warm up. Any thoughts of a sensor that I can replace or change? thanks for your time and very nice Engine Bay.
NICE!!!!
Out of curiosity did you replace that OEM distributor with an aftermarket piece?
I have a 86 having a hard time starting but when apply starting fluid it fires right up and stays running until turned off and then the process repeats. What could be the reason behind it? Plzz help for bless
I bet you that things got some good damn torque
@ Julian Victor, Oh yeah! Just had to replace the motor mount on the driver's side last week due to the torque! I have a lot of mods though. It's a torque monster for sure!
Wow. Very impressed with your knowledge. Did you work for GM? Great info!
Thanks for the info!! i recently got a 87 vette with the TPI 350. I know nothing about them so i am doing some research. Does anyone make a code reader for these?
American Engineering at its best
Now, what kind of process are you looking at Mechanic wise? If you get a fuel leak due to that fuel pressure regulator going bad in let’s say a C4 Corvette?
Any tips on how to wake this engine up? Is there anything that we should upgrade that is worth more of our time than others for this particular engine? What do you recommend!?!?
Aluminum ported heads cai 400 crank aluminum rods forged piston heads
Not really. Would be awesome to have an SLP intake like this guy has on his and a 52mm throttle body. You can contact Hyper Tech and give them a mod list of things you've done to upgrade and give them the number from your factory computer chip and they will make you a high performance chip. Other than that, Holley makes a TPI that comes with a harness and computer that you can Dyno tune, but that's expensive as hell! I have an 87 GTA 5.7 TPI that I put headers and a 3" Flowmaster exhaust on. I also put a MSD distributor and coil and a K&N cold air intake, dual Flex-a-Lite fans and a 160 thermostat. Also put a 52mm throttle body on it. I did the thing with Hyper Tech and got a chip, it's pretty strong now! I'm really about to wake mine up with an LS and T-56 manual. Hopefully I'll have it done by the end of the year!
I am fixing up an 87 T/A. I noticed that the top vacuum line on your throttle body is capped. Is it a special cap or just plugged. Any vacuum line you are not using?
That's blocking coolant from running through the throttle body. Don't need that on cars in the south, or anywhere it stays pretty warm.
What about the sensor that is between spark plugs 6 & 8? I thought that was to activate the cooling fans at a certain temp??
@@shaun4bigblocksllc Only on '85? Strange, my 1988 Formula had the 9th injector
@@dantresohlavy7323 Yep, my 87 GTA has one too.
is there any specific way to diagnose the ESC on our TPI's
Yes, but you'll have to find someone who has a scan tool with the software for these engines, and that's hard to find!
GM , please bring back Pontiac!!!!! GTO and Firebirds!
The 4th gen ws6 is just a wicked beautiful car.
And the Fiero! Just kidding... I do miss the Trans Am!!!
Bout to make my LT1 a 383.
Anyone notice that SLP intake? Those are extremely hard to find and will wake these engines up along with a 52mm throttle body!!
chuck lucas i’m putting one in my 75 stepside luv with a t56. my dad had one when he was younger. he told me about it and explained it and i’m beyond excited to have one after 6 years of searching and finally getting to put one together in this truck
Woww that’s incredible! What a beauty!! Did u make custom parts or did u order?
Forgot the fan switch sensor in passenger side
Forgot about MASS air flow sensor
Can I get some good horsepower on my 350 with this
Sorry, but TPI was not way ahead of its time. GM went to Bosch for the electronic fuel injection part. It has standard (for the time) Bosch fuel injectors, and everything else is Bosch, or Bosch-compatible. The Tuned Port part is the intake manifold itself. GM power train engineers designed it for low-end torque, which is the reason for the very long intake runners.
The fact is, ALL all engines have 'tuned ports'. Chevy marketing guys just chose to use that as a catchy name. This system was a huge leap forward for GM, but was nothing special in the broader world of EFI.
Right. My 87' Porsche 911 had all Bosch Motronic components, but this system is digitally tunable. I have a custom chip in it , and it RIPS!
@@goneflying140
The GM TPI system is also digital, and you can also get a variety of custom chips for it. Rochester actually produced GM's components under license from Bosch. The Motronic in your 1987 Porsche and the Rochester system in the Corvette are equal in sophistication, because they are essentially the same system.
Cool Porsche, BTW. But, I have a 1988 Corvette, which snacks on Porsches of its generation, due to its superior design and execution. Porsche-smorsha. You have been served!
:)
Check out my purple 92 tpi!
This engine confuses the hell outta me. I have a 305 with the t5, and the lines, wires and all that is so overwhelming. Not to mention the smogpump and all that garbage.
Ancient Aliens.
RED
So basically what you're saying is these TPI setups garbage and nothing but problems
John Fasanelli there not for broke people if you have the money there a a master piece when done right
CHOP GOD You don't have to have money, just tools, a factory service manual, a laptop running TunerPro and the interface cable for the OBD1 connector. That stuff and an account on thirdgen.org and you're all set. Fuel pump, relays, temp sensors and injectors are the most common problems. Vacuum leaks are not allowed.
Go back to your Honda.