My 82' with 2:73 rear end and rebuilt 2150 is still getting 13.25 to 14.25 MPG depending on speed and stop and start. Its a bit doggy but gets me there happily. Don't forget...no smog gear either, its Tennessee after all!
Originally Posted by Billygoat
sounds like a bad power valve, and I have seen them bad out of the package, so don't figure a rebuild would have fixed it.
IIRC Ristow had a link to a holley power valve that would fit, and are new vs ones that have been sitting in rebuild kits for who know how long.