GM 5.7L truck motor for new project?
Today, 01:10 PM
#1
Junior Member
Thread Starter
Join Date: Sep 2024
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
Car: 87 IROC
Engine: 350 TPI
GM 5.7L truck motor for new project?
https://www.gmperformancemotor.com/parts/19432778.html
Wondering if anyone has tried putting some power into one of these? Its getting harder to find older "replacement" engines these days, and just trying to see if someone has any advice on a good engine for my 87 5.7
Thanks
Wondering if anyone has tried putting some power into one of these? Its getting harder to find older "replacement" engines these days, and just trying to see if someone has any advice on a good engine for my 87 5.7
Thanks
Today, 01:22 PM
#2
Supporter/Moderator
iTrader: (7)
Join Date: Feb 2001
Location: Cincinnati, OH
Posts: 13,351
Likes: 0
Received 426 Likes
on
328 Posts
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Re: GM 5.7L truck motor for new project?
Yes, swapping engines is very common especially the 350. However, what are your goals and what is your budget/mechanical abilities. The engine you've linked is not worth the hassle at 210 HP for $4700. Oooof. You'd be better off with a crate 350 from any one of the reputable shops, build your own, or explore other OEM 350 mills (L31).
Today, 01:27 PM
#3
Supreme Member
iTrader: (1)
Join Date: Sep 2005
Posts: 26,499
Received 1,857 Likes
on
1,415 Posts
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: GM 5.7L truck motor for new project?
That's a pitiful motor for a swap. A serious downgrade in every way from your stock one.
Why are you looking to "replace" your existing one?
Why are you looking to "replace" your existing one?
Today, 02:24 PM
#4
Junior Member
Thread Starter
Join Date: Sep 2024
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
Car: 87 IROC
Engine: 350 TPI
Re: GM 5.7L truck motor for new project?
Because it has 387k miles on it and I was looking for a good base for my long-desired 871 project. Think a big baddy sticking out of the hood would look awesome.
Today, 02:31 PM
#5
Supreme Member
iTrader: (2)
Join Date: Apr 2000
Location: South Windsor, CT
Posts: 1,322
Likes: 0
Received 232 Likes
on
196 Posts
Car: '89 GTA
Engine: ZZ6TPI
Transmission: T56
Axle/Gears: Borg Warner 3.70:1
Re: GM 5.7L truck motor for new project?
For the same money, you can get the L31 (Vortec) version.
https://www.gmperformancemotor.com/parts/19432780.html
Still a lot of money for a stock 350, but 250hp instead of 210hp and it has Vortec heads and is a better starting point for upgrades.
https://www.gmperformancemotor.com/parts/19432780.html
Still a lot of money for a stock 350, but 250hp instead of 210hp and it has Vortec heads and is a better starting point for upgrades.
The following users liked this post:
NoEmissions84TA (Today)
Today, 02:36 PM
#7
Senior Member
Join Date: Sep 2002
Location: Nebraska
Posts: 841
Likes: 0
Received 10 Likes
on
10 Posts
Car: '89 Formula
Engine: 355
Transmission: 700R4
Axle/Gears: 9 bolt
Re: GM 5.7L truck motor for new project?
The factory roller truck blocks are still pretty abundant. Check out FB Marketplace. As long as it's in good shape, a factory-style block would be fine for a typical street car.
I even see decent intact truck engines for sale on occasion. If that's the type of thing you're looking for, look for used options. Much cheaper.
I even see decent intact truck engines for sale on occasion. If that's the type of thing you're looking for, look for used options. Much cheaper.
Thread
Thread Starter
Forum
Replies
Last Post