LT4man
Well-known member
Greg The 4+3 highway mileage is not going to be noticeably different with 0.67:1 overdrive ratio vs. 0.7:1 OD ratio with the 700R4 automatic. In stock form they get mid-20s on the highway...most certainly not mid-30s!
I guess the fella must have been dreamin' while driving his Vette!

Of course, with my LT4 getting over 600 HP from the factory, I guess almost anything could be true with these vehicles!



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