| [GMCnet] MPG [message #271808] |
Thu, 12 February 2015 11:48 |
Advanced Concept Ener
Messages: 112
Registered: December 2014
Karma:
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Senior Member |
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Ok I said my memory was fading. The 72 buick heads were used on my 74 roadmonster vista wagon project. It was a 455 not a 403. Cool project with see through distributer cap ,headers K&N etc. the 78 Royale heads were just reworked with larger valves, springs , new cam and lifters. But it did get 11 average and on long low country trips I saw as high as 12 over a 1200 mile trip. Saw biggest change when I took off the brand new Rochester with all the mods and installed the holly fuel injection. Sorry for my confused mind but it was 25 years ago.
Jon Darcy ACES
76 stretch, flares, 4 bag, Alcoa's, bunkhouse
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