Pure stock 340 Mopar

[X-TECH MAN]

Originally Posted by Todd Boyer

1971ls6: I believe you're referring to the "Pure Stock Musclecar Drags" series in which you must run manifolds and bias tires.

Mark: IHRA has a Pure Stock class that NHRA doesn't. Our local series runs under IHRA rules which open things up to more participation from 'different' classes. You can't use a 'stocker cam' as a traditional stocker can. But I've read here that you should have a cam ground which will check within the specs but should work better than a dead stock grind.

Can run headers with mufflers OR open manifolds.

You can check out the rule book at http://www.ihra.com/.

Thanks for the replies guys.

Correct on all the above. You can run 9 inch slicks at 29.5 diameter. The cam MUST check on OEM duration and over lap like in the Jr. stock days of pre 1972. The valve springs must check on OEM open and close pressure specs also.
Just pretend your racing back in 1971 Jr. stock days if your old enough to remember those days.