few questions about 302 5.0 installation

[Jeff65]

Originally posted by David Fulford
I have the 270HP crate motor with the GT-40 iron heads. I'm not sure if these are P heads but I don't have special headers. I just have heddman long tubes. I thought they were the P-heads though. Someone will probably correct me and tell me exactly which heads came on that motor. Anyway just thought I would throw that in there. You should be able to buy the correct headers from ford racing. Good luck with it. I'm pretty sure you will like the combo you have.

And do more research, I take the don't trust anybody approach when doing something big to my car, until I hear or read the same advice a couple of times. (Although Jeff65 seems to know his stuff.) Have a good one.

"P" heads with straight plugs are used on the 215hp crate engine M-6007-P52. These heads require "P" type headers but some normal angled plug headers will fit. These heads are fitted with factory valves/springs.

"Y" heads with angled plugs are used on the 270hp crate engine M-6007-A52. These heads are fitted with larger GT40 valves/springs.

Both are cast iron. "Y" is the highest performance cast iron heads sold by FRPP. Higher level performance heads are cast aluminum "turbo swirl" design. The "Y" heads flow at higher rates than the "P" heads and about twice as high as early 289 heads.