CURRENT RULES READ:

30) HEADS
a) May run any cast iron head 23-degree head with no modifications to head, must be bolt-on O.E.M. or aftermarket replacement.
b) (NO porting, polishing, machining, welding, acid etching, or gasket matching.)
c) NO Aluminum Heads allowed.
d) NO angle plug heads.

CHANGE TO READ:

30) HEADS
a) May run any cast iron head 23-degree head with no modifications to head, must be bolt-on O.E.M. or aftermarket replacement.
b) NO porting, polishing, machining, welding, acid etching, or gasket matching.
c) NO Aluminum Heads allowed.
d) Angle plug heads are permitted.

Download 2022 Pure/Hobby/Strictly Stock Rules Bulletin #1 – 5/23/22