Re: [Amc-list] LPG 258

[Jim Blair <carnuck@xxxxxxxxxxx>]

Yesterday I was chatting with an LPG agent and he told me that as of 2001 the US has started blending Butane in with the LPG and his truck which ran excellent for years on the old stuff, now pings. The octane equivalent of LPG has dropped to 104 from 130 so if you go past 10.25:1, your motor will ping.


From: Brien Tourville 
Subject: [Amc-list] LPG 258
To: amc-list@xxxxxxxxxxxx
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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 ?

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