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Old 08-16-2019, 06:52 PM   #30
geezer#99
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Join Date: Aug 2009
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Re: MPG and Manifold Vacuum

Quote:
Originally Posted by Marty68 View Post
how hard is it to change od ratio from .76 to .86..?? I have the trans ready to install. I however am concerned .76 may put my 283 in too low an rpm and be a gas hog
Maybe you should try the poor man’s under/overdrive with taller or shorter tires.
Could save some trans gear swaps.
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