Mr. Tarkanian
Well-Known Member
Have you ever tested your mpg after your 302 swap? Trying to put together a build plan and just wondering what to expect. So far, I'm looking at a carb'd 302, AOD, 3.73 or 4.10 gears, 31 inch rubber. Thanks!
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My 90 B2 had a stock 2.9/a4ld with 3.73's and 35" KM2's. It got 10mpg at best.
I then swapped in a EFI 5.0 out of a 87 Mustang,c4 trans and the same axles and tires. I now get 18mpg+ on the highway and around 15-16 around town.
Doin 70mph in the slow lane is right around 2500rpm for mine. Wish I would have gone with 4.56 gears and a AOD tho.
Also I strongly suggest looking into going EFI. You will never get a carb to pull this kind of mileage unless your a carb tuning god. Wiring my truck was very simple for the efi. And as a bonus it will now run while laying on its side!![]()