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!

SAVE THE

Oh wait you said yours. Lets put that on the dyno, get documentation on 40 mpg and we will talk price.




