Ls7 How Big Can I Go
#2
TECH Fanatic
Join Date: Jul 2006
Location: North Bay, Ontario
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i think around 440 ci...what type of build are you going for? ls7s are pretty much maxed as far as cylinder walls, are going to get thin and need to be sleeved for heavy mods...why not go with a 454 LSX if your looking for big cubes
#5
FormerVendor
We have done about 8 LS7 455-457s so far out of that block with the 4.250 crank. They have all worked great so far. There is a lot to it and you will have problems if you don't know what parts to use but they work great as long as you know what you are doing. The LS7 has a little longer sleeves as well.
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#11
FormerVendor