Re: Compression

From: David Gersic (info@zaccaria-pinball.com)
Date: Thu Oct 08 2009 - 22:27:54 EDT


On Thursday 08 October 2009 21:00:20 Jamie Calder wrote:
> I have a 408 short block that's been sitting in my shed for about 4 years
> now. My local machinist built it but I got the parts from a Dodge engine
> builder (rods, pistons, cam, crank). In the last few years I've learned by
> reading on different forums that perhaps this persons setup (specifically
> pistons and cam) may not be the best combo. Before I pick up this project
> again, I'd like to know if there's a way to determine what compression
> ratio these pistons have.

Compression ratio involves the crank and rods as well, not just the pistons:

http://www.carcraft.com/techarticles/calculate_compression_ratio/index.html

> I did take pictures if it can help anyone identify these Ross pistons.

Maybe contact Ross? Is there a part number on them or any other identifying
marks you can see?



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