heavychevy357

hey guys i was wondering which flowed better & which would be better for an LS3 427 stroker build. heard the LS7 heads were awsome on the ZO6 & wasnt worth replacing & wondered if they would fit on the LS3 427 shortblock like Texas Speed & Scoggin Dickey sell. would a cam made for an LS7 work in that engine also? what about intake would i need an LS7 intake to match up to the LS7 heads ? are AFR & TFS heads better than LS7 heads?

kumar75150

what's the bore on the ls3 427?

ive read you need >= 4.1" bore for the ls7 heads

edit: the bore is 4.07

1st google result: http://www.ls1tech.com/forums/genera...-bolt-ls3.html

heavychevy357

alright thanks kumar. does anybody know if a cam made for an LS7 would work in an LS3 block?

obzidian

Though they are both rectangular ports, they both flow quite differently. I would spec a cam for the heads ON THE MOTOR.