ls2 or 402 cu on C5
Thread Starter
Racer
Joined: Nov 2007
Posts: 491
Likes: 6
From: Dallas Texas
ls2 or 402 cu on C5
Ok here is the deal. The reason for this post is to pretty much get a rough estimate of what power i would be putting down with the following mods. An ls2 or a 402 cu with american racing headers, a pretty big cam(not too sure on which brand to go with), Supercharger or Procharger, Tune, intake, and heads. About how much power should i be putting down?
Tech Contributor
Joined: Jan 2007
Posts: 19,471
Likes: 1,171
From: Dyer, IN
Ok here is the deal. The reason for this post is to pretty much get a rough estimate of what power i would be putting down with the following mods. An ls2 or a 402 cu with american racing headers, a pretty big cam(not too sure on which brand to go with), Supercharger or Procharger, Tune, intake, and heads. About how much power should i be putting down?
Burning Brakes
Joined: Oct 2002
Posts: 833
Likes: 2
From: Pembroke, GA
will it be a forged motor? if so you can get up wards of 750+ out of it then you need to look at tranny and rear and clutch. if its a stock bottom end ls2 you can get in the area of 600+ish with the right tuner.
Team Owner
Joined: Apr 2001
Posts: 26,794
Likes: 614
From: Elmhurst, IL (West Suburb of Chicago) & Home of MEGA Horsepower
St. Jude Donor '06
DO a professonally built forged LS2 stroker motor that will give you 402 ci and will make just STUPID POWER THROUGHOUT the entire rpm band on BOOOOOOOSSSSSSSTTTTTTTTTTTTTTTTTTTTT!!! 800rwhp would be a no brainer with the rigth cent. supecharger, cam and heads, running 17 lbs of boost and tuned by a professional 
Last edited by Mopar Jimmy; Jul 28, 2009 at 02:14 AM.
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
402
i am a huge fan of 402s. but then need to built right. not on the cheap.
if your going to build a motor, spare no expense. Do it right, get the right parts, spare not expense or just get a LS2 create motor.
i am a huge fan of 402s. but then need to built right. not on the cheap.
if your going to build a motor, spare no expense. Do it right, get the right parts, spare not expense or just get a LS2 create motor.
Safety Car
Joined: May 2006
Posts: 3,799
Likes: 1
From: Northern Virginia
St. Jude Donor '08
Ok here is the deal. The reason for this post is to pretty much get a rough estimate of what power i would be putting down with the following mods. An ls2 or a 402 cu with american racing headers, a pretty big cam(not too sure on which brand to go with), Supercharger or Procharger, Tune, intake, and heads. About how much power should i be putting down?
For a cam suggest you consider the ECS blower cam. Pretty popular and effective for S/C vettes.
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
Big HP motors need or should be refreshed often.
and everyone has different opinions, but IMO mid 500 rwhp on an HONEST SAE certified dyno
anything over upper 500s to 600 will need LOTS AND LOTS of care. ie rebuilt often.
plus that much is just a PIA to drive.
and everyone has different opinions, but IMO mid 500 rwhp on an HONEST SAE certified dyno
anything over upper 500s to 600 will need LOTS AND LOTS of care. ie rebuilt often.
plus that much is just a PIA to drive.
