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Tim H · 05-18-2018, 12:51 PM

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 ?

05-18-2018, 12:51 PM	#1
Tim H VIP Member Join Date: Jan 2007 Posts: 1,040 Likes: 1,068 Liked 481 Times in 158 Posts	Class Racer Info 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 ?