big base circle cam in stock elem.

Historically it has not been enforced like that. Guys have pushed the envelope with parts and have gotten away with it. Some have been challenged at the track by tech officials, then the challenger is overruled. So the positive manner enforcement, is not being held up everywhere.

Sounds like roller bearings are the issue, not the size of the base circle/bearing journal.

Originally Posted by Dwight Southerland

That's not quite the way it works. The rules are written and enforced in a "positive" manner. That is, if the rule book does not say you can do it, then it is not allowed. Plus, according to the paragraph under "BLUEPRINTING" in the stock cars section, it clearly states "Stock factory OEM components (unless otherwise specified) must be retained and remain unaltered . . . " (emphasis mine). That's a good basis for it not being allowed.

[Dave Casey]

Dwight hit the nail on the head, if it doesn't say it is allowed in the rule book, it isn't,, sorry Bobby

This is certainly a grey area topic though,, there are plenty of large bore cams out there, and i never saw anyone tossed for it, but I honestly don't know if anyone has ever been checked for it.

According to the letter that is posted here, it's A OK. unless of course they change their mind. So we simply need to hear from NHRA regarding this issue, because someone obviously told Jeff and Kevin larger bore cams are not allowed.

Thanks Sammy for starting the thread