SS/CS accepted heads

[Jeff Swanson]

If I'm reading the rulebook right any head run in SS/CS must be NHRA accepted. The list of approved heads on nhraracer.com doesn't include any Ford heads for SS/CS. What am I missing?

"All heads must be NHRA-accepted, two valves per cylinder, except in classes DS, ES, FS, and GS, four valves per cylinder permitted."

[Mike Mans]

As a Ford competitor, you can run any Ford manufactured factory cast iron heads. They must be accepted if they are an aftermarket casting (Dart, Brodix, etc...).

[Jeff Swanson]

Thanks Mike, I always thought that was the case, but the wording above (2017 rulebook) threw me off.

[FireSale]

Ford makes a head that fits the SS/CS spec of "Inline iron" called the N351. It is primarily for short track circle track racing. I did a lot of digging on this head and found it on the 1/8 mile record holding Mustang of Venice Perno.


It has a Ford part number, M-6049 N351, so it's not technically "aftermarket". Got mine from Speedway Motors. Require offset rockers and special headers.



links:
http://dragracecanada.com/ontario-ford-aficionado/


.

[FireSale]

Here's some pics of N heads on a BOSS302 block in my 68 coupe. It's a work in progress running in Pro at the moment. I just rebuilt the front suspension and will get it out for competition this weekend.



Mustang by Designer Dale, on Flickr


Engine by Designer Dale, on Flickr

[Jeff Swanson]

Originally Posted by FireSale

Ford makes a head that fits the SS/CS spec of "Inline iron" called the N351..

No doubt that's the Ford head to run. Good luck with yours!

[rawhide]

Ford Performance has discontinued the N351 head and Speedway seems to be the only source of new ones. They must have purchased a bunch of them.

Roland