New to this need some help
New to this need some help
Hey guys im new to the whole chevy v8 deal and i really like it so i went and bought a 350 5.7 small block, the block is perfect i already ordered a kit from summit racing with forged pistons the whole nine yards, im good with everything that has to deal with engines now the swaping part is what gets me, i have a 88 f body camaro it currently has the 2.8 with a 5 speed, everything is as stock as it can be, by now you guys get my idea , i wana drop the 350 in it, what do i need does the 350 would bolt right in can i use the stock transmission, can i use a t56, do i have to run any wires, new computer or somethin to it (I want it fuel injected) i dont like carb... i really need you guys help one of my freinds told me about the site that is really helpful and i need a lot of help, thank you guys a lot im gona be checking this every day and everything will help again thank you









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From: New Boston, IL, USA
Car: '90 Formula 350
Engine: 383 SBC
Transmission: ProBuilt S/S 700-R4 & ACT 9" Stall
Axle/Gears: 10 bolt 3.23
Re: New to this need some help
Welcome! Lots of good threads out there on this already. If you use the search that should cover 95% of your questions.
You're going to need a 350 ECM (computer) and a harness for a V8. I assume you're wanting to go plain TPI setup not something like a LT1 or LS1. Your T5 won't work on a V8 without extra work and even then most people believe it's not the best idea to convert them.
3.1 to 5.0 swap:
https://www.thirdgen.org/forums/engi...3-1-5-0-a.html
2.8 5 speed to a 350 swap:
https://www.thirdgen.org/forums/engi...eed-2-8-a.html
https://www.thirdgen.org/forums/engi...5-2-8l-v6.html
https://www.thirdgen.org/forums/engi...sion-help.html
Also keep in mind there isn't much different in the intakes of 305 vs 350 (just injectors). In the late 80s they converted from a cold start injection type. In '90 they started using Speed Density vs MAF sensors.
You're going to need a 350 ECM (computer) and a harness for a V8. I assume you're wanting to go plain TPI setup not something like a LT1 or LS1. Your T5 won't work on a V8 without extra work and even then most people believe it's not the best idea to convert them.
3.1 to 5.0 swap:
https://www.thirdgen.org/forums/engi...3-1-5-0-a.html
2.8 5 speed to a 350 swap:
https://www.thirdgen.org/forums/engi...eed-2-8-a.html
https://www.thirdgen.org/forums/engi...5-2-8l-v6.html
https://www.thirdgen.org/forums/engi...sion-help.html
Also keep in mind there isn't much different in the intakes of 305 vs 350 (just injectors). In the late 80s they converted from a cold start injection type. In '90 they started using Speed Density vs MAF sensors.
Last edited by fireturd350; Aug 18, 2011 at 12:40 PM.
Supreme Member
iTrader: (8)
Joined: Jul 2001
Posts: 3,204
Likes: 7
From: New Boston, IL, USA
Car: '90 Formula 350
Engine: 383 SBC
Transmission: ProBuilt S/S 700-R4 & ACT 9" Stall
Axle/Gears: 10 bolt 3.23
Re: New to this need some help
Need to use different mounting area for the V8 vs the V6 on the K member.
Here check out this thread:
https://www.thirdgen.org/forums/engi...swap-read.html
And here's a v6 to v8 swap story:
https://www.thirdgen.org/forums/engi...son-v6-v8.html
Anything can be done with enough time and money. You've already bought a block and pistons so you're kinda limited by that now. They [LS1s] use a different engine design all together.
See this:
http://en.wikipedia.org/wiki/Chevrol...and_LS_engines
Here check out this thread:
https://www.thirdgen.org/forums/engi...swap-read.html
And here's a v6 to v8 swap story:
https://www.thirdgen.org/forums/engi...son-v6-v8.html
Anything can be done with enough time and money. You've already bought a block and pistons so you're kinda limited by that now. They [LS1s] use a different engine design all together.
See this:
http://en.wikipedia.org/wiki/Chevrol...and_LS_engines
Last edited by fireturd350; Aug 18, 2011 at 01:03 PM.
Supreme Member
iTrader: (8)
Joined: Jul 2001
Posts: 3,204
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From: New Boston, IL, USA
Car: '90 Formula 350
Engine: 383 SBC
Transmission: ProBuilt S/S 700-R4 & ACT 9" Stall
Axle/Gears: 10 bolt 3.23
Re: New to this need some help
Anyways hope it works out for you. It'd be a real bitch to pull the 350 apart and find out it's already 30 over bored or something and the new pistons don't fit because of it.
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Joined: Dec 2009
Posts: 784
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From: NJ
Car: 87 Z28
Engine: AFR 383
Transmission: 700R4
Axle/Gears: 4:11
Re: New to this need some help
sell what kit? LS1 is a totally different engine then a Gen1 350.
Find a t5 trans out of a v8. You also need to find v8 motor mounts, If your block doesnt have a serpentine system or v belt system your gonna need to find one also, your v6 stuff doesnt work with the v8.
You need to re-route your front brake line as they are in the way of the v8 motor mounts, so you mise well just put new ones in while you can.
The stock fuel pump should be enough as MPFI pumps alot out and our good pumps.
People will say you "HAVE" to change your front shocks to v8, i call BS. Yes the v8 weighs more then a v6 but i have done the swap twice and the car handled just fine driving on the road. Note i said driving, not racing
just a few things needed to be done, am old school, cant help much with the FI you want to run
Find a t5 trans out of a v8. You also need to find v8 motor mounts, If your block doesnt have a serpentine system or v belt system your gonna need to find one also, your v6 stuff doesnt work with the v8.
You need to re-route your front brake line as they are in the way of the v8 motor mounts, so you mise well just put new ones in while you can.
The stock fuel pump should be enough as MPFI pumps alot out and our good pumps.
People will say you "HAVE" to change your front shocks to v8, i call BS. Yes the v8 weighs more then a v6 but i have done the swap twice and the car handled just fine driving on the road. Note i said driving, not racing

just a few things needed to be done, am old school, cant help much with the FI you want to run
Senior Member
iTrader: (2)
Joined: Dec 2009
Posts: 784
Likes: 2
From: NJ
Car: 87 Z28
Engine: AFR 383
Transmission: 700R4
Axle/Gears: 4:11
Re: New to this need some help
The cars are all the same, v6, 5.0, 5.7. Only difference is v6 mounts are placed differently. You may need a v8 harness if your going tpi lilke others said but I have no clue
Supreme Member
iTrader: (8)
Joined: Jul 2001
Posts: 3,204
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From: New Boston, IL, USA
Car: '90 Formula 350
Engine: 383 SBC
Transmission: ProBuilt S/S 700-R4 & ACT 9" Stall
Axle/Gears: 10 bolt 3.23
Re: New to this need some help
I have no idea but due to the fact it's going to be a different intake and have 2 more injectors it would be easier just to get the harness when you snag the 350 ecm. Check out ebay, most of the time you can get tpi, distributor, ecm, and harness as a packaged deal on there.
Where exactly did you get this block?
Where exactly did you get this block?
Re: New to this need some help
is a 350 from year 80 to 85 it comes up in this page http://outintheshop.com/faq/casting/castings2.html
Supreme Member
iTrader: (8)
Joined: Jul 2001
Posts: 3,204
Likes: 7
From: New Boston, IL, USA
Car: '90 Formula 350
Engine: 383 SBC
Transmission: ProBuilt S/S 700-R4 & ACT 9" Stall
Axle/Gears: 10 bolt 3.23
Re: New to this need some help
Yep I'm guessing 80 to 85 350... atleast that's what it started as.
Re: New to this need some help
What type of heads would bolt on the 350 block and here are the plans for the build
350 block bored .30 over
summit racing 350 rebulild kit with forged pistons flat top with 4 valve reliefs( kit brings everything expect the cam and lifter)
stage 2 connecting rods
havent decided with cam to use in which arpm range im thinkin voodoo dont know which rpm thogh(ADVISE WOULD BE HELPFUL)
heads havent decided which one to use that would bolt to Weiand Stealth Ram Intake Manifold TPI from hawksthirdgenparts.com(HELP ON THIS)
at least 58mm thottle bodie
60-70mm turbo
t56 transmission
rear end not so shure what to put on
OEM wire harness with poss tuned ECM
thats what i got so far any advice would help
350 block bored .30 over
summit racing 350 rebulild kit with forged pistons flat top with 4 valve reliefs( kit brings everything expect the cam and lifter)
stage 2 connecting rods
havent decided with cam to use in which arpm range im thinkin voodoo dont know which rpm thogh(ADVISE WOULD BE HELPFUL)
heads havent decided which one to use that would bolt to Weiand Stealth Ram Intake Manifold TPI from hawksthirdgenparts.com(HELP ON THIS)
at least 58mm thottle bodie
60-70mm turbo
t56 transmission
rear end not so shure what to put on
OEM wire harness with poss tuned ECM
thats what i got so far any advice would help
Senior Member
iTrader: (2)
Joined: Dec 2009
Posts: 784
Likes: 2
From: NJ
Car: 87 Z28
Engine: AFR 383
Transmission: 700R4
Axle/Gears: 4:11
Re: New to this need some help
Not all that experienced but you might want domed pistons to lower the compression, i believe flat tops raise the compression, you would want to be 8:5:1 or 9 on compression to run boost.
Heard voodoo cams are great for making noise, but suck making power. Would concider calling up some companys, tell them what your plans are, and have them custom grind one
Heard voodoo cams are great for making noise, but suck making power. Would concider calling up some companys, tell them what your plans are, and have them custom grind one
Senior Member
iTrader: (2)
Joined: Dec 2009
Posts: 784
Likes: 2
From: NJ
Car: 87 Z28
Engine: AFR 383
Transmission: 700R4
Axle/Gears: 4:11
Re: New to this need some help
Not sure about those intakes, whatever head you choose ( I would think 195cc or better) make sure ot wont raise your compression too much.
2 bolt block should hold the power, unless your thinking 600+hp
2 bolt block should hold the power, unless your thinking 600+hp




