Re: [Amc-list] LPG 258
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Re: [Amc-list] LPG 258



A lot less milling if you slip a set of flat top 199 pistons in there first!
I think we spec'd out about 10.5-1 with the 199 flattops and a 4.0L head in basically stock heights.

I believe you can use a chevy 250 six piston in a 4.0L block to get around the 11 or 12-1 range too.
Again, not positive of the exact needs to accomplish this. But heard it is doable.

--
Mark Price
Morgantown, WV
1969 AMC Rambler, 4.0L, EFI, T-5
2004 Grand Cherokee Laredo, 4.7L, Quadratrac II
" I realize that death is inevitable.
I just don't want to be around when it happens! "

 -------------- Original message ----------------------
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 ?
> 
> 
> T
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