hifi875

iTrader: (2)

i am installing a set of milled 243s (.030) with .040 head gaskets on my 5.3 for a compression bump and better performance than my stock 862s on a carbed setup. can they just be swapped w/out any other parts? if not what do i need? thanks

1969mach1

they will swap out just fine.

hifi875

iTrader: (2)

cool, thanks. next on the list will be a cam. probably a 218 or 220 for some low end. i have a ls1 cam in it now. anyother recomendations?

PREDATOR-Z

You'll need to run 243 bore head gasket. I would say LS1 or LS6