turbobuick33

With the stock engine and minor bolt ons like exhaust and headers. What mpg do you guys get with 373 gears with the 6 speed manual trans? Was there a big loss from 342 to 373?

DGageSS

iTrader: (9)

i get about 15 i believe....its whatever. with oil dropping and i live in the bay area when at one time it was at $5.00 i don't complain mush anymore because its back to about 2.50

2002 SS HUGG

15 mpg...that doesn't make sense. lol Jumping from 3.42's to 3.73's is not much of a jump whatsoever. You prolly won't even loose one mpg from that jump. Now, if you go with 4.11's like I'm doing right now...you may notice maybe drop in mpg by 1 or 2. Basically, with stock and what not...you will be fine and not adversely affected. I get 25-26 on the highway with my 3.42's...not bad.

1996firebirdformula

iTrader: (3)

Theres barely any at all. 100 more RPMS in 6th from 3.42 to 3.73s

1600 RPM @ 71 mph 6th gear. 3.42s

1700 RPM @ 70 mph in 6th gear. 3.73s

http://www.f-body.org/gears/

Shepp1691

iTrader: (8)

My car gets around 16 with the 373, but it also got the same mileage with the 411 in it. It wont change urs much.