wrong spec submitted by MOPAR

[Alan Roehrich]

Originally Posted by Irv Johns

In my case there were no piston specs for the 392 till March of this year. My engine was built with Diamond pistons as per NHRA specified with NHRA Logo and Diamond pistons engraved on top (early Drag Pak pistons had no engraving on top that was added after the first ones went thru teardown). There was no part number or ring spec in book til this March. My engine builder only had what was available for specs last June when my engine was built. He trusted Diamond to build pistons per NHRA as they were a approved vendor.

Irv, are you saying NHRA allowed you to race a car with an engine that did not have clearly defined specifications in the blueprint guide?

How did they expect to properly inspect an engine at tear down if there was no published specification, or even an accepted part number?

The blame for that lays solely at the feet of NHRA.