LS2or LS3
Race Director
Joined: Mar 2011
Posts: 13,262
Likes: 3,150
From: SW Florida
2021 C6 of the Year Finalist - Modified
Unless you planning on replacing the stock LS2 heads ... the LS2 heads and intake manifold combo don't flow nearly as good as the LS3 heads and intake manifold combo.
Safety Car
Joined: May 2016
Posts: 4,651
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From: Erlanger, Kentucky
Thread Starter
Melting Slicks
Joined: Apr 2006
Posts: 2,887
Likes: 11
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
With your plans, it would be cheaper to start with an LS2 Vette. I'd look for an '06 or '07 as they had a stronger rear end vs an '05. You'd end up with 402ish cubic inches with a 4" stroke crank as the LS2 has a 4" bore vs the LS3's 4.065" bore. An LS3 top end (heads and intake manifold) for your 402 would be a nice upgrade for not a whole lot of cash. You might consider ratcheting back your HP goals as 900 rwhp can sure eat some drive train parts. 750 is a whole lot of fun and you'll spend more time enjoying it and less time working on it.
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Thread Starter
Melting Slicks
Joined: Apr 2006
Posts: 2,887
Likes: 11
With your plans, it would be cheaper to start with an LS2 Vette. I'd look for an '06 or '07 as they had a stronger rear end vs an '05. You'd end up with 402ish cubic inches with a 4" stroke crank as the LS2 has a 4" bore vs the LS3's 4.065" bore. An LS3 top end (heads and intake manifold) for your 402 would be a nice upgrade for not a whole lot of cash. You might consider ratcheting back your HP goals as 900 rwhp can sure eat some drive train parts. 750 is a whole lot of fun and you'll spend more time enjoying it and less time working on it.
Thanks
No way. He has a V6 Mustang. He's many years from a fast car. Just something for us to build and drag race together.