You need to determin which speed pro pistons those are and find the cc spec..........you can probably tell from sight by looking at the pictures online.

I dont see anything wrong with the heads you have ..that number lists them at 91 up closed chamber oval ports for a 427 t motor....pat will know about if those heads will work.....if they will work ,no reason to spend more money if you are on a budget.


Look at the deck on the block ,can you see any machine marks ...you should be able to tell if it was decked any by looking for gaskett marks.

Are the pistons domed ,flat top or dished?


I would also spend the extra money on a roller cam,instead of different heads.Pat listed roller lifters that will work for cheap,just need to figure out your static compression to know what cams that will work the best.


It may seem like a big hassel now ,but the time getting all of your specs now will pay off later.