Ford 302 SS build

[Jim Caughlin]

Originally Posted by ShipC1970

Happy Sunday all!

Doing a ton of homework and planing for my super stock 1970 mustang. I have a question in reguards to heads. I am a little confused because It shows that the AFR1399 heads are accepted replacements in the technical bulletins however not in the NHRA accepted replacements. Also in the rulebook it’s a little unclear as to if they are ok to use for super stock. Anyone have experience with this? I do have the matching D00E heads and block for the car and a roller 302 that I could use for GT class. Any help is appreciated.

Thanks!
Chris

If you plan to run the AFR head in SS, get your checkbook out, the heads as delivered have too large of valves. You need to remove all of the seats and weld up the head so you can install the smaller seats to match the smaller valves, then report them to match, not a small or inexpensive undertaking.