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Old 05-21-2018, 04:56 PM   #3
jmantle
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Join Date: Feb 2008
Location: Black Creek, BC Canada
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Default Re: Class Racer Info

Quote:
Originally Posted by Tim H View Post
Using the very helpful site that Dwight has provided, I have a question regarding piston compression height. As an example one of the listed repl. pistons for a 1969 Chevy 350/300 is the TRW L2256F. TRW lists the compression height @ 1.563 " however the NHRA tech spec is 1.535". I am missing something ?
NHRA lists the minimum accepted pin height. Most replacement pistons will exceed this dimension but still give you room to deck the block.

Jim Mantle V/SA 6632
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