[Gearhead999]

Never saw that on a Ford. Ran in to problems on hogged out chevy heads that were angle cut for compression, but never a sbf.

When you say the heads walk. You do have the locator pins on the heads don't you?? True they do expand at a different rate then the block, but the intake is aluminumn too.

Are the gaskets thick enough??? Are the ports so big that they blow out???

Do you have the correct intake gaskets. Not to offend, but there are about three different intake gaskets considering the water outlet size and shape for a sbf.

1. Early one kind of "L" shaped
2. Later square
3 Later yet a larger square

Don't ask me, or remind me how I know this one. UGH !!!!