I keep hearing that yet the most I see is about 10% difference. Less than that on a higher compression engine unless your LPG is cut with Butane. E85 runs 20-30% lower economy. From: Ken Ames <ameskg@xxxxxxxxx> To: "Rambler AMC, Nash, Jeep and family" <amc-list@xxxxxxxxxxxxxxxxx> Subject: Re: [AMC-list] 4 barrel intake for a 290 Message-ID: <1592731284.4333695.1423780246864.JavaMail.zimbra@xxxxxxxxxxxxxxxx> Content-Type: text/plain; charset=utf-8 But don't you have to use more gallons of LPG compared to gasoline to go the same distance? Or am I thinking of a different fuel? Ken ----- Original Message ----- From: "Jim Blair" <carnuck@xxxxxxxxxxx> To: "amc" <amc-list@xxxxxxxxxxxx> Sent: Thursday, February 12, 2015 12:23:50 PM Subject: Re: [AMC-list] 4 barrel intake for a 290 I agree on SP2P for a 290 or 304 unless you want to build a redlining power monster. I plan on using one on my 304 I'm going to run on LPG (price just dropped to $1.75 a gallon here) and I'm considering one on the 290 that's going into my '68 Travelall, if I ever feel well enough again to do anything to my vehicles. Sent from my iPhone -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://list.amc-list.com/pipermail/amc-list-amc-list.com/attachments/20150213/aab13591/attachment.htm> _______________________________________________ AMC-list mailing list AMC-list@xxxxxxxxxxxxxxxxx http://list.amc-list.com/listinfo.cgi/amc-list-amc-list.com