Quote:
Originally Posted by geezer#99
You're looking on the wrong end. Your mpg is suffering cause of the O/D and 3.07 gear.
You'd get better mpg with more gear like 3.73 or 4.10. Less throttle opening equals more mpg.
However nothing wrong with some hop-ups. Headers and a 4 bbl intake with small 390 holley will help.
With your gearing a 350 would probably get better mpg though.
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Sorry but I have to agree with geezer#99.
your Much better running the 3.72 gear with that t-5