IHRA Pure Stock Classification

[Dan Fahey]

Originally Posted by kellintrans

I am currently building a 1987 Oldsmobile Cutlass Salon to run in Pure Stock next year. However, IHRA does not have camshaft or valve spring specifications for the engine ( 307cid/ vin Y motor). Therefore it is not eligible. How do I go about getting this car certified to run in Pure Stock.

Best to start with Mike Baker because your engine should be identical to those already running Stock.

I think IHRA may have to have to Standardize on a Spring that is most common. Much like Pure Stock Drag has. They standardized on 130# Seat Pressure without damper.
If the heads came with more you could use that number.

IMHO most of our stockers came with 80#, some with 100#.
Might be wise to use 100# for all cams unless published higher and can be documented.

Simplify the process and reduce Tech Maintenance.