400+ci
Thread Starter
Teching In
Joined: Aug 2006
Posts: 2
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400+ci can i use a production iron truck block with a aftermarket 4.00 stroke crankto get at least420-427ci do i replace the sleeves?is this possible or do i need too look into the ls2-ls7 stuff i would rather stay with the iron block. fill it with blockfill if need be.plans are to build a 420+ci ls1 with a sheetmetal intake & carb(dominator)with some 350+cfm heads.fogger & a plate... 
Originally Posted by RA4VV
can i use a production iron truck block with a aftermarket 4.00 stroke crankto get at least420-427ci do i replace the sleeves?is this possible or do i need too look into the ls2-ls7 stuff i would rather stay with the iron block. fill it with blockfill if need be.plans are to build a 420+ci ls1 with a sheetmetal intake & carb(dominator)with some 350+cfm heads.fogger & a plate...
4.03" x 4.100" = 418cid
4.03" x 4.125" = 421cid
4.04" x 4.100" = 420cid
4.04" x 4.125" = 423cid
4.06" x 4.100" = 424cid
4.06" x 4.125" = 427cid
Thread Starter
Teching In
Joined: Aug 2006
Posts: 2
Likes: 0
i see, this helps out alot. ive built alot of engines small & bigblock chevy's & several pontiac's all that made good power just have never messed with the new stuff (LS1,LS2&LS7)but im learning thanks for the info.
