my cam is 245-252 @50 with 110 LC.It does not respond well below 1800 with the 4in stroke,maybe a 4.21 will respond better.I am thinking of trying a vac. adv. dist to see if it will help.My car with a tunnel ram and a pair of 750 AFBs gets around 16-17 MPG on the highway with 4.56s and the TKO.Tom
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