IS THIS 87-91 CHEVY 305 WORTH BUILDING AND PUTTING IN SOMETHING? THIS ONE IS!
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- เผยแพร่เมื่อ 22 ก.ค. 2023
- THIS 305 VORTEC ENGINE IS WHAT STARTED THE ENTIRE LS SWAP SQUAREBODY C10 PROJECT. OBVIOUSLY WE CHOSE NOT TO USE THIS ENGINE. SINCE I SENT IT IN TO THE MACHINE SHOP AND HAD IT GONE OVER AND SUMMIT SENT US THE PARTS I NEED TO REPAIR IT. I THINK ITS WORTH BUILDING AND PUTING INTO SOMETHING ELSE. LOOKING FOR A 1988 THROUGH 1992 S10. STAND CAB OR EXTENDED CAB. SHORTBED ONLY. 2 WD PREFFERED. CLEAN RUST FREE, COMPLETE AND NOT BUTHERED.
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i made a mistake in the video. these are not "vortec" heads. they are "swirl" heads. the specs of the chamber, intake and exhaust valves measurements and the low flowing issues are correct....i just called them the wrong name. actual vortec heads flow much better and would make an improvement. you will have to overlook my mistake......im not a chevy guy. it is still a great engine for what it was intended to be use for. basic transportation, good fuel economy, occasional light towing and reliability.
they don't give any better mpg then a stock 350 the ls gives way better mpg i have about 5 350 4 bolts that run when pulled i even have 2 327 sitting i pull sbc to put bbc in replace and i would go with 525 113 cam . i have a s-10 but it runs good i want 2000 for it black on black good body good paint all 100% factory
I would get a 3.75" stroker crank to take it out to 334 CID. For cam I would look for something like 214/224 @0.050" and 0.450 lift and the LSA of 108°. Port 081 heads and install 1.9"/1.55" LS valves with beehive springs. Use 1.6:1 roller rockers for a bit more lift. For an intake, an Edelbrock Performer RPM Airgap and an AVS2 650 carb.
Build for 10.5:1 CR. Should give good performance in a half truck with good economy.
Yup so those heads are 187 castings , they are a TBI head , they are similar to the Vortec in that they also are a swirl port , The Vortec head is a copy of the 193 head installed on 350 TBI's except for the smaller chamber and intake valve.
From my experience and research the 187 is hi velocity swirly head so good for gas mileage and low end torque.
That cam card from Summit is in error in that the exhaust lobe centerline should read 124 not 104 and hence the lobe separation angle on that cam will be 114* which is gonna give you super smooth idle.
I would say by looking at the cams you have there that the cam in the box is the same as the one you pulled from the motor might even be milder as the Summit 1100 wouldn't even be classed as a RV cam !
The Summit 1100 is equal to the cam that makes the 305 a dog and the most hated small block in the GM line, i would implore that you don't run it and go for one of the dozens of better aftermarket RV grinds.
Right of the top of my head i would say run Comps high energy 260H , at just 0.440 lift it should work , should bolt right in which is what you want.
The ideal S-10 to get for V8 swap is one with a 4.3 litre V6, your V8 will literally bolt in and bolt up that S10's tranny.
~230hp may not sound like a lot to some, but an old 2wd s10 would be a ton of fun with that amount of power. Sounds like an awesome project.
230 horsepower is less than a stock L69 makes. Using NRHA's S/SS factor a stock 1987 L69 makes 248 hp. Mine made 248 on Carlisle Racings dyno at 4800 rpm. Thats a bone stock L69 305 with stock exhaust into 2.5 inch walkers and the alternator, water pump, steering pump, and smog pump attached like the factory rates theirs. With nothing more than orange valve springs and 3 angle valve job its over 260 horsepower.
Any project you do is entertaining and informative.
Yes please, go ahead and built it. The same care and attention to detail goes into them all, and you already have it. No point in letting it go to waste.
Great project video J.C.Smith really enjoy watching you build this 305 for your S10 project. Looking forward to your next video J.C.Smith.
👍👌👏 Finishing projects that already layed around for some time, is always good. Being out of the workshop, out of your head and off your shoulders helps respectively relieves.
Best regards, luck and especially health to all 3 of you.
As it has been said. You build it they will come/ watch.
Love what y'all are doing and the way y'all do it.
If I was there in your garage, I would put an apple on your workbench! Thank you for the detailed explanation! I just hope there is not a quiz later…
I enjoy watching your builds no matter what it is , your always very thorough and I like the fact that you don’t cut corners.. that would be a fun little engine for a s10 .
This is a very good explanation of the science of camshafts. Way to go!
Hi JC thank you for sharing
Anything you do I will watch like how you explain things.
It’s always great to see you rebuilding anything, I sure we will learn something so start videoing 👍🏼
Sounds like good plans for that motor.
very interresting explaining how these things work, leaned some new things, greetings from Belgium
I would enjoy seeing you build it back
I've built several 305's. Great small engine. I use the 1102 cam. Very satisfied with the performance.
Yes, go ahead and build it. Would make a nice series to watch!
The 305 gets a bad rap by many because they don’t understand the purpose for which it was made. It was designed for light duty use or occasional towing of the family boat while maintaining decent fuel efficiency. It wasn’t intended to be a HD torque monster.
I had a customer who had one in his 2WD Silverado that routinely got 18-21 mpg. He put 300K on it before it needed refreshing. Guys mess up stuffing big cams and carbs on them in an attempt to make it something that it was never intended to be.
For a cruiser that sounds good and is easy on the fuel they’re hard to beat for simplicity and economy of repair.
exactly. still a good sounding v8, good fuel economy and decent power for what it is. it will be a huge improvement in an s10
I would enjoy your build sounds like a cool project
A strong 305 build is always good. I got 498k mi on my K1500 305 tbi. Used it as a cruiser, hauler, work fishing, camping truck. Did everything i needed it to do.
I'm not a shivvy guy...at all... but it's there so might as well build it instead of it going to waste and it'll be just fine in an s-10 or something small ! Of course we wanna see it... everything you do is interesting, entertaining, and educational ! 👍👍 Hope 'ol Jeffrey is doing good !
That would be cool build the motor my son would enjoy it he likes a lot of stuff that you do
I enjoyed the explanation on this one, would like to see the build, thanks
The way you do'em, I'd bet you'll it make a worthwhile outcome.
Real interesting content J.C. Never really read into how different cam lobes change the characteristics of the valves. I think a small block s10 project would be awesome. Especially if you can squeeze just a tiny bit more power than a stock block.👍
They used a 601 ho casting on high-performance 305 engine ,and they are great with bowl work and some port work .They have larger valves and a 52 cc chamber.
Oke on the camshaft, your block is a factory hydraulic roller block so using a flat tappet hydraulic cam is a bad choice. Id use an 081 L69 head and tie a rope around those 187 swirl ports use them as a boat anchor. The 081 heads will give you more power everywhere especially on the high end. The cam Id use a hydraulic roller in the 212 intake 218 exhaust duration with .450 lift and 110 - 112 lobe center angle so your power brakes will work without a problem. Use a factory 14057053 L69 aluminum intake which actually makes more power than a Weiand Action Plus or Edelbrock Performer. The springs Id use are Manley 22410 and set them up with 130 lbs or seat pressure @ 1.75 inches. Ive built a bunch of 305 and race one in NHRA Stock Eliminator K Stock Automatic.
Did a 331 cui out of a 305 block and it ran great we used I believe a 400 crank that what my brother said we ran it in our flat track car on dirt track. then it ended up in my 56 willys wagon , I have seen 400 hp out of the 305s before on the Dyno
Yeah, go for it. Don't have to go fast to be dependable.
V8 chevy luv or s10 pickup has been on my bucketlist for years.
My dad had a 2wd 87 Chevy half ton short bed that a guy who worked at the dealership had special ordered with a 305 and 400 trans, the guy only kept the truck a year before trading it and my dad bought.. my old man kept that truck for almost 15yrs before finally selling to get something with 4x4 and to this day he wishes he would’ve never sold it and says it was the best truck he ever had! We live in central Illinois, in the winter where my dad worked had underground parking so after he got to work he would wash all the salt off it.. that truck had no rust on it the day he sold it!
I would love to see you build it
Rode in a couple v8 swapped s10s and they were a blast.
Would like to see the 305 build
Build it and video it, I’ll watch it, any video is a good video
With lifter and camshaft wear problems associated with flat tappets (either hydraulic or mechanical) your best bet for longevity is to use a hydraulic roller cam and lifters . Problem seems to be with the reduction of zinc additive in newer oils .
Torco ZDDP will end that problem
Go for it!
If you build, I will watch.
I enjoy the "Projects" done by J. C. Smith and Wife unit.
I'll watch that build.
Sounds like this would end up being a good driving unit. It's a classic case of run what you brung.
If you had the lifters, retainers and spider hold down plus push rods, get ya a roller 350 cam and put it in there. I have one out of my 96 350. And I know those replacement cams for the rollers ain’t cheap either! But if you can keep the zinc additive in your oil, you shouldn’t wipe out a cam.
hello j.c & mrs.smith it's is randy and i like yours video is cool thanks friends randy
put a micrometer on the cam lobes and measure the lift and multiply it by 1.5. Use a degree wheel after installing the cam in the engine and use that to find the cams duration. Figuring out the cam specs are easy if you know how to degree a cam. The stock valves in a 305 are dished, those valves are flat roof Manleys which are a "budget replacement' valve. A 104 lobe center angle is going to make horrible top end horsepower. And good luck on your power brakes working right.
Vortec heads and HT383 cam would be very nice in an S10.
Would love to see the build.
Great option for an s10 J.C 🙂👍
I want to see you build it.
I would like to see you build it
Yes let’s build it
I would say build it. I’ll watch
A 305 TBI with 700-R-4 automatic overdrive would be a good cruiser and run interstate speeds and decent gas mileage.
Yes sir build that 305.
Cars/trucks he came with the 305 you know you're not going to go fast but you'll get there every time and get good gas mileage. The 302 got the most followers in the performance industry and that size because the 350 is more available in gm form than the 351 ford 305 is a very good engine! The tpi version was a beast is it didn't take well to big cams
I have a rebuilt pre vortec 350 sitting in my shop waiting for a vehicle too.
My Opinion on The 230 HP is the fact that there is no emissions components, & the Intake is probably Single Plane, Because you are never at idle while the Boat is moving. So The cam would probably be low end Torque to get the Boat to plane & High end HP to maintain Speed/Plane. The Exhaust on a Boat is usually short & free flowing.
knowing the specs in that cam sure would answer the questions. i could install it and use a degree wheel to figure it out.
yes show the build will be interesting
Summit 1102 cam really wakes up a stock 305 up to 5000 rpm.
Best lobe for a 305 and a 1.84" intake valve = is an incredible 105* degrees!
guess again its 109.
I built a 305 that was dyno tested 380 horses 300 foot pounds of torque.
😎👍
I want to see it
Down south when we hear a car with a performance camshaft idling we say that it is hitting a lick. And if we rebuild an engine we want it to hit a lick. So a lot of performance camshafts get installed in engines that end up making less power than it would have with a stock camshaft. But that’s OK because the sucker does hit a lick ha.
Hey JC wondering when you change exhaust bolts do you use grade 8 and do you use anything on the threads thanks ,keep up the great work Ross
i dont use grade 8 for exhaust.
For a stock 305 rebuild, what is the stroke of the crankshaft
you could always if you wanted a little more camshaft you could go from 1.5 rocker to a 1.6 or 1.7 rocker
doesnt change the flow of the head tho....its all about cost vs amount of improvements. it will take quite a bit of money to make any big improvements. i might see about some 062 heads. they are reasonably priced used would help.
@@j.c.smithprojects i agree head flow is a limiting factor but in come cases when you need just a little more a rocker change might help some cases can also hurt. my truck has the stock cam that came in it wanted just a little more mid and top went with 1.7 rockers gave me just what i wanted. its a dodge but same applies. thanks for sharing
i could see where that was attractive to you, if you liked the cam's duration and lobe separation but wanted more lift. much easier to change rockers while the engine was in the truck than changing the cam.
Well I hope you used a high volume pan with the hv pump or else bye bye engine.
I should add I prefer the cams with wider lobe separation angles. 114/116 degrees. smoother idle, and broader power band. U didnt say what compression ratio it will be, 8.5? They look like dish pistons, If I were me id swap to some flattops and get the compression up to 9.5/10 to 1 and run 91 octane gas will pick up power, torque, mileage, and efficiency all across the board.
i dont know what the compression ratio is. the builder wouldnt share any specs. i might pick up some better heads and maybe a better cam.
@@j.c.smithprojects them heads are what u want for a low rpm torque and mileage engine, they will spin to 4000/4500 rpms.
Build it. Not everything needs 400 HP and the 305's are very good little motors. I don't care what else is out there.
Wonder if L30 heads would be possible...
230 horse is possible. My Volvo Penta 225 is a 305 SBC painted red with fancy Volvo decals.
I beat the crap out of that thing. It nearly caught fire-twice and sunk once. Still going fine. No oil consumption, decent fuel economy and pretty reliable.
im not saying it isnt possible, i just question the rating with the heads that are on it.
@@j.c.smithprojects
They do look restrictive.
I don't get the hate for the little 305. They're cheap and durable.
I would have definitely went with a better cam. A Summit 1102 or 1103 would have been a much better choice IMO. Of course a roller cam would have been even better. Something like the GM 14097395.
cam isnt going to do it any good without better heads....and it is still just a 305
@@j.c.smithprojects I disagree.
you can disagree all you want. opinions wont change reality. you can open the valves higher and longer but it isnt going to change the flow of the heads and how much air can be sucked in. once the volume of the chambers are saturated, you are not going to get any more air in with out pushing.
Hey those aren’t vortec heads. There the small valve swirl port heads. There is a difference. Just so you know vortec heads use only eight intake manifold bolts two at each corner. Also the intake manifold angle for the swirl port heads are different with the center bolts than a traditional small block head. Just a fyi.
yeah someone else pointed that out earlier i should have refreshed my memory before i did my video about something im not familiar with.
Still a smb Chevy- s 10 - Vega ? , convert fwd vehicle into a toy ? . I’ve got a 260-040. Thinking of an idea also.
Just came across this video. Want some advice stick to the stock cam especially on a 305.i have a lot of experience in this engine.bigger cams in these motors over stock seriously looses low end torque for daily driving. These motors are particularly sensitive to higher cams.
Ive built a whole lot of 305s and you are correct about the sensitivity to cams. The biggest Ive used in a 305 street engine is a Lunati Street Master 225 duration .477 lift. It was far more temperamental than the Bracket Master was with 224 duration and .460 lift. Its the lobe separation and ICL that made it less forgiving.
Build the motor it will be great content
Nothing wrong with building a 305. Id do the same as there a good fuel economy engine. I also will say these arnt the vortec 305 heads, there the swirl port 305 heads.
Hey jc found ya an s10 in akron
Put vortec 350 heads on it, they are much better than the 305 stock heads.
I have a stock 305 with a better made stock camshaft with a 700r4 in a 88 gmc 1500 long bed. I pull a trailer and a 2240 John Deere tractor/bush hog
please share the cam shaft specs/
@@j.c.smithprojects I don't have the specs, engine was rebuilt a few years ago. I recommend isky cams
@@j.c.smithprojects my opinion, the cam you have is just dandy.
Build it .
Thosde aren't vortec heads. Those are tbi swirl port heads. 305s need the 58cc chambers to have any compression. I would have at least stepped up to the stock 300 horse 350 cam.
My mistake....not a chevy guy and memory failed.
edit...if that is the only mistake i made....life is good!
Lobe center is not the same as lobe seperation. Lobe center tells you the advance or retard of valve timing.lobe seperation tells you the overlap given a specific duration.stock Chevy usually has lobe seperation of 110 or more.did you find the specs on marine cam? Some marine cams make good daily driver.example a few factory Ford 351w marine cams have been used in mild 302 and 351w.small gain but as you pointed out,don't require stiff springs that accelerate cam wear.
I would drop that into a 71 to 75 Chevy Vega 😳😳
now that is interesting.
@@j.c.smithprojects GM built some Monza's with the 305 V-8 from the factory. A touch newer than the Vega.
I helped my high school shop teacher build a V-8 Vega, station wagon.
Bad ass car !!!
@@haroldphipps3457 I built a 305 in a 79 Sunbird (same body style as a Monza) that was a sleeper. The problem was getting the 14 inch tires to hook up, once he was rolling he was oke but off the line it was a smoke show.
@@MasterWitchDoctora buddy is building a Monza drag car for some 10 1/2" wide rear tire class.
But then he has been building a 2wd pulling truck for 11 years too. 😊
Nothing wrong with building a 305. They have their flaws yes, but it’s still a SBC. Just make sure your head gasket is larger in diameter than your combustion chamber on the head you’re choosing to run…
Edit: As for wanting more lift, just run 1.52” roller tipped magnums, they work real well and in stock form running a viton seal, you have about .490” clearance to play with…
Sure lets sees the motorbui!d
Build it on camera !
All 305 builds need like 440 lift brother. Need over 400 lift with 1.5 rockers... 305 is a pig without more cam..
the factory lift on an L69 was .403 intake .415 exhaust and Ive made 260+ horsepower with the stock cam. The 081 heads start to diminish at .450 and @ .500 you reach port saturation.
Every time someone wanted to rebuild a 305 they regret not going with a 350.
i dont know anyone that "looks" for a 305 but when you already have it and everything to put it together.....you put it together.
@@j.c.smithprojects yes. I know. Most 80s cars had them. But when we would rebuild them, they were more expensive than just going 350. Every one that did rebuild it was because of keeping it original or to comply with emissions. Honestly the 3.8 v6 was better than the 305. FYI- the machine shop had 350 blocks w/4 bolt mains honed and cut for $300. The 305 was $800. 😂 yeah. Like I said we saw it all. 😂 honestly if I had a car with a 305 I would probably do an ls swap.
my thoughts exactly. its not much more work to have the ls. this was suppose to go into a c10. i just couldnt bring myself to put this slug in. so i put a drive by wire ls in it with the factory 400 trans.
@@j.c.smithprojects 😂 my thoughts exactly. When we start to talk engine swaps with friends we all come to the same conclusion. It’s just so efficient, easy and cost effective.
The problem is the 305 will never get better milage than a 350 and the stock 350 has 80 ft lbs more tq than the 305 I learned this the hard way my first build was a 305
Build it
Spider hold down and dog bones are cheap. Use the factory roller cam and lifters. I will never go back to a non roller cam.
u do know u can get better engines for free i been getting the 450 hp 454 with the 02xx trans behind it for free got 4 setups with 6,000 to 58,000 miles on them all running perfect . the engine comes with steel crank heavy rods high flow heads all factory built the trans is a 02xx 400r turbo that has the heavy duty 8 bolt pump heavy clutches stage one shift kit good to 800 hp but cheap to build to a 2000 hp trans .i put one in my 68 chevy pu and put a intake on it with a 850 holley and it came alive . plus i get twin electric pusher fans oil cooler power steering cooler desert cool radiator and a internal and external trans cooler it would be the perfect setup for ur truck and it is free once u know the secret of getting them
dont care. gas engines are not attractive to me at all.
Hey jc build it and video it
I looked through your videos. Didnt where you fixed this 305.
build it
A shop that grinds cams can tell you the specs.
i could put it in the engine and use a degree wheel...
It would be a waste for it to sit
It’s free build it
I have a 91 s10 Tahoe full frame for you 😮😮 in texas
you mean an entire truck?
Ex cab1991 2wd no motor.. frame with rear diff and front hubs..bed is good but cab is damaged and parted out, have some other parts from this truck 4l60 is ok and for sale
No title for it..parts truck
@@j.c.smithprojects I have what's left of a 91 s10 frame rear diff front end front fenders ..excab has some damage bed I'm in texas free to you if you can get it 4l60 from it is ok and for sale 4.3 engine parts
No the only place a 305 is good for is a long block repower on a 5.0 mercruiser for a boat.
the "only" place huh.....seems close minded to me
@@j.c.smithprojects Apologies. I commented before watching the whole video. Being a boat engine It will sing at WOT on 15W40.
Could swap out my engine in my Laguna 🤣😂🤣😂🤣😂🤣
no idea what that is
@@j.c.smithprojects Chevelle Laguna s3 they was big in nascar back in the mid 70