Re: Compression

From: Jamie Calder (jcalder3@cfl.rr.com)
Date: Fri Oct 09 2009 - 06:04:47 EDT


--------------------------------------------------
From: "David Gersic" <info@zaccaria-pinball.com>
Sent: Thursday, October 08, 2009 10:27 PM
To: <dakota-truck@dakota-truck.net>
Subject: Re: DML: Compression

>
> 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?
>
>
>
I realize there's a lot involved to determine the compression ratio but
usually the manufacture will sell them with an advertised compression ratio.
That's what I'd like to know



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