LS3, 430hp upgrade?
Thread Starter
Teching In
Joined: Sep 2009
Posts: 4
Likes: 0
LS3, 430hp upgrade? Hi!
A friend of mine has a LS3 430hp crate engine.
He´d like 500+ hp.
What to do?
What kind of ECU is needed? (doesn´t have one)
Also,... what camshaft would You recommend?
RPM range approx. 1500-6000
The car is used as a daily driver and occasional autocross driving.
Chevelle -66, LS3, T56.
Thanks. Mike.
A friend of mine has a LS3 430hp crate engine.
He´d like 500+ hp.
What to do?
What kind of ECU is needed? (doesn´t have one)
Also,... what camshaft would You recommend?
RPM range approx. 1500-6000
The car is used as a daily driver and occasional autocross driving.
Chevelle -66, LS3, T56.
Thanks. Mike.
TECH Resident
Joined: Mar 2012
Posts: 821
Likes: 4
From: Elkridge MD
Super Chevy did an article in 2008 about LS1 and LS2 upgrades. They took a stock 405hp LS2 and added headers, and dynoed it at 462hp. I would imagine an LS3 with headers, a tune, and maybe a cold air intake would be creeping up on 500hp
Staging Lane
Joined: Sep 2006
Posts: 64
Likes: 2
The 430HP LS3 has been dynoed many times over the years by different sources. If I remember right, all of the figures were between 489 and 511 HP. The 430 HP rating is a very conservative rating by GM.
I've seen a dyno test of LS3 with the HOT cam producing around 520HP. I don't remember the exact figure but it was between 520 and 530.
The dyno test of the LS3 with a HOT cam appeared in a previous issue of "GM High Tech Performance" It was a LS cam test article and there were many cam choices that were better than the GM HOT cam, although most of the others cams required new valve springs.
I've seen a dyno test of LS3 with the HOT cam producing around 520HP. I don't remember the exact figure but it was between 520 and 530.
The dyno test of the LS3 with a HOT cam appeared in a previous issue of "GM High Tech Performance" It was a LS cam test article and there were many cam choices that were better than the GM HOT cam, although most of the others cams required new valve springs.
Friend of mine had an 08 Vette with 40K on the clock. He added a cold air
intake Long tube headers with a ZO6 factory cat-back exhaust. He called
Texas Speed and the shipped him a 231/237 @ .050" cam with .6xx lift,
push rods, and a dual spring kit. That's all he did and it dyno tuned at 489 horsepower RW.
intake Long tube headers with a ZO6 factory cat-back exhaust. He called
Texas Speed and the shipped him a 231/237 @ .050" cam with .6xx lift,
push rods, and a dual spring kit. That's all he did and it dyno tuned at 489 horsepower RW.
Trending Topics
Thread Starter
Teching In
Joined: Sep 2009
Posts: 4
Likes: 0
Thanks. for the answers.
I think we wait with the camshaft swap for now.
Cold air intake and long tube headers would be a good start.
----------------------------
One question about the ECU.
If we buy the 19258270-GMPP LS3 Controller kit LS376/430.
contains pre-programmed ECU.
Is it possible to reprogram this ECU, if we decide to replace the camshaft to get the 500+HP?
Mike.
I think we wait with the camshaft swap for now.
Cold air intake and long tube headers would be a good start.
----------------------------
One question about the ECU.
If we buy the 19258270-GMPP LS3 Controller kit LS376/430.
contains pre-programmed ECU.
Is it possible to reprogram this ECU, if we decide to replace the camshaft to get the 500+HP?
Mike.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
