C6 Tech/Performance LS2, LS3, LS7, LS9 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

403ci LS2 build help/thoughts

Thread Tools
 
Search this Thread
 
Old Sep 14, 2015 | 03:03 PM
  #1  
BrownPants209's Avatar
BrownPants209
Thread Starter
Intermediate
 
Joined: Sep 2013
Posts: 26
Likes: 0
From: Atlanta Georgia
Default 403ci LS2 build help/thoughts

403ci LS2 (I can't seem to find the build sheet for exact parts)
- 11.3-11.5 SCR
- 4.000" stroke
- 4.005" bore
- Comp UltraGold 1.72
- Comp pushrods
- Comp LS2/7 lifters
- Comp dual springs (520lbs?)
- JE pistons/rods
- G6x3
- LG 1-7/8" Super Pro Catless to nothing.
- Stock intake and fuel systems at this time.

I have a lifter going down and am looking to replace the cam, lifters, pushrods, and possibly springs with something better suited for my motor. Staying n/a. Basically I am looking for some opinions on cams..what size would benefit me in which ways? Not necessacarilly needing the most peak power, but the most usable power. If there is enough interest, I will get the exact build specs.

Last edited by BrownPants209; Sep 14, 2015 at 03:05 PM.
Reply
Old Sep 15, 2015 | 01:04 AM
  #2  
LEAVINU's Avatar
LEAVINU
Le Mans Master
15 Year Member
 
Joined: Oct 2006
Posts: 5,078
Likes: 19
From: Cumming, GA
Default

What does the current motor make? That would be a good starting point when speaking to potential gains and where, given the G6X3 is a solid cam choice for the most part.
Reply
Old Sep 15, 2015 | 05:15 PM
  #3  
BrownPants209's Avatar
BrownPants209
Thread Starter
Intermediate
 
Joined: Sep 2013
Posts: 26
Likes: 0
From: Atlanta Georgia
Default

Originally Posted by LEAVINU
What does the current motor make? That would be a good starting point when speaking to potential gains and where, given the G6X3 is a solid cam choice for the most part.
No dyno yet, but has a tune. I got a little throttle happy and over revved it recently after the build Q the music.. I had the g6x3 from previous..stuff. I've been told it is a big cam for the stock motor but with the current motor it is not as potent.
Reply

Get notified of new replies

To 403ci LS2 build help/thoughts





All times are GMT -4. The time now is 08:57 PM.

story-0
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-1
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-2
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-3
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-4
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-5
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-6
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-7
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-8
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-9
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE