500ci LS2
Thread Starter
Heel & Toe
Joined: Aug 2004
Posts: 23
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500ci LS2
Looks to me like they install new sleves with 1" block spacers. Hard to tell what the specs are, but i'm thinking 4.5" stroke and somewhere around 4.2 bore.Thats a whole lot of SB girth, specially with the 4.4 bore spacing.
Melting Slicks
Joined: Apr 2001
Posts: 3,034
Likes: 125
From: NY-South Florida
Le Mans Master
Joined: Apr 1999
Posts: 6,129
Likes: 14
From: Vette
Just copying my post from:
http://forums.corvetteforum.com/show...post1552725029
http://forums.corvetteforum.com/show...post1552725029
Just saying “500ci” almost makes me orgasm! 
However, that’s way to much stroke I’m afraid.
I dunno what kind of power we’ll see out of these setups, but I doubting it will be much more than 427ci setups.
Torque will be sick of course. I also don’t know about long term reliability with such extremely long strokes because of side loading issues.
What we need is a new aluminum BIG BLOCK.
Why can’t an aftermarket block company come out with one damn it!
This way it could be bored the hell out (something like 4.5” bore would be nice!). Then insane power will be available NA.
I hope it happens
However, that’s way to much stroke I’m afraid.
I dunno what kind of power we’ll see out of these setups, but I doubting it will be much more than 427ci setups.
Torque will be sick of course. I also don’t know about long term reliability with such extremely long strokes because of side loading issues.
What we need is a new aluminum BIG BLOCK.
Why can’t an aftermarket block company come out with one damn it!
This way it could be bored the hell out (something like 4.5” bore would be nice!). Then insane power will be available NA.
I hope it happens
Pro
Joined: Sep 2002
Posts: 748
Likes: 0
From: NC
but......A 4" stroke crank already puts a pretty severe side load on the pistons as they come out of the skirting.....where/how are they finding the extra 0.50???? Crank balance bobs must be smaller?
I personnally would not try and make any significant power/RPM with this motor, it is hard enough to get the 4" factory bores to stay true under high loads.
My 4.100 block is collecting dust
after some NOS abuse caused the sleeves to drop.If you look at the typical endurance race motor they are almost always big bore short stroke.......
My $.02
Team Owner
Joined: Jul 2002
Posts: 37,022
Likes: 68
From: This city NEVER sleeps! Frank's back yard!
Originally Posted by bogielake
but......A 4" stroke crank already puts a pretty severe side load on the pistons as they come out of the skirting.....where/how are they finding the extra 0.50???? Crank balance bobs must be smaller?
I personnally would not try and make any significant power/RPM with this motor, it is hard enough to get the 4" factory bores to stay true under high loads.
My 4.100 block is collecting dust
after some NOS abuse caused the sleeves to drop.If you look at the typical endurance race motor they are almost always big bore short stroke.......
My $.02
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