Just an update, new Bosch fuel injectors and a 2" x 27" cherry bomb muffler helped a little, it is more throttle responsive yet does not takes as much pedal to get moving or maintain constant speed as before. Getting 15.5mpg as long as I keep it under 3100rpm in 5th (about 70mph). Running 80, the mileage still falls off bad, 13mpg again, just nature of the beast I suppose. The estimated highway of 17mpg must be at 55mph.
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Red\black 65 Grand Prix 467 E-head stroker, Viper T-56 6-speed, 4.10 spool
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