Re: [Amc-list] LPG 258

[Frank Swygert <farna@xxxxxxx>]

Look for different pistons -- you can only go up maybe one full point by shaving the head alone. Compression doesn't go up with the 4.0L head on a 258 -- only 8.7:1 (stock 4.0L). The combustion chamber sizes are the same on the 258 and 4.0L. 

------------
Date: Thu, 02 Oct 2008 16:43:26 -0400
From: Brien Tourville <hh7x@xxxxxxxxxxxxx>

LPG runs best with high compression - so -
a 4.0 7120 head to a stock '81 258
would require roughly how much shaving
to accomplish 11 to 1 compression ?

-- 
Frank Swygert
Publisher, "American Motors Cars" 
Magazine (AMC)
For all AMC enthusiasts
http://farna.home.att.net/AMC.html
(free download available!)

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