L31 engine build
Thread Starter
Supreme Member
iTrader: (1)
Joined: Apr 2007
Posts: 1,196
Likes: 0
From: BUFFALO, NY
Car: '89 IROC-Z
Engine: 355
Transmission: 700r4 edge 3000 stall
Axle/Gears: 9-bolt 3.73
L31 engine build
Building a 350 based off of the L31 vortec block. I've got a holley steath ram, SDPC vortec heads, LT4 hot cam, and custom chip. What do you guys think about this setup? I'm only switching out the shortblock (which was a 2bolt 355) for the L31. Will i have to reprogram the computer? Also im thinking about reusing the cam, what are some other better cam options? (that wouldnt require the computer to be reprogrammed?)
Joined: Mar 2000
Posts: 43,187
Likes: 42
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Changing out the shortblock, retaining everything else including the cam, won't require any reprogramming.
Curious why you're doing this.
Curious why you're doing this.
Thread Starter
Supreme Member
iTrader: (1)
Joined: Apr 2007
Posts: 1,196
Likes: 0
From: BUFFALO, NY
Car: '89 IROC-Z
Engine: 355
Transmission: 700r4 edge 3000 stall
Axle/Gears: 9-bolt 3.73
Re: L31 engine build
The motor had a rod knock but we never found any spun bearings. Any way thats getting replaced with the new L31 shortblock and my neighbor thinks I should get a new cam and says I can't reuse it. Visually it looks fine though. I'm thinking like 400hp with this setup and good exhaust.
Thread
Thread Starter
Forum
Replies
Last Post
Terrell351
Engine/Drivetrain/Suspension Parts for Sale
5
Jun 13, 2021 01:13 PM
84z96L31vortec
Tech / General Engine
7
Aug 20, 2017 12:16 AM
