bad70ss

iTrader: (2)

I am looking into buying a car with 4.30 gears and a m6 trans. I was wondering how much this will hurt the gas mpg and how it would be for a dd (summer months mostly). Also, cruising on the highway around 75-80, what rpm are you guys at.

Thanks again

silverLSWON

iTrader: (16)

i drove 13 hours each way from pittsburgh to memphis and got 29.6 mpg with the mods in my sig. my worst mpg was 25.3

silverz28camaro

iTrader: (20)

The great thing about the m6 is the the 2nd overdrive(6th) is a .50 ratio, us auto guys are .70 in out over drive, my car is auto with 3.73 and can pull 22 mpg on the highway wiyth ls6 head, torque v2 cam

Don't worry about those 4.30"s unless its in a 10 bolt!!!!! BOOOOMMMMM!!!!

Randy WS6

iTrader: (69)

I love my 4:30's , the best gear for me.

Camaro Jearmy

got 4.30's in a 12 bolt 6 spd...65 mph turning about 18-1900

bad70ss

iTrader: (2)

That makes me feel better, I assume highway will not suffer, but around town will? And yes its a 10 bolt

silverz28camaro

iTrader: (20)

Around town shouldn't change, If anything the car should take off with a little less throttle. You maybe able to skip from 1 st to 4th to avoid burning to much fuel, but i'm not sure ask the m6 guys.

Don't worry about mpg, half the time you will be at WOT anyway so let it go.

studderin

iTrader: (28)

I love my 4.30s and I was on a smaller 25.5 tall street tire. Going to a taller DE this year for a street tire. Like silverLSWON Drove I think it was 16hrs driving time over 2 days tio the shootout. 80mph is about 2,200 rpms, M6 its fine. Somtimes going 1-2-3-4-5 at 10-20-30-40mph around town can ge alot, but is easy skip, 2-4 not the big drop. And 2nd starts are fine if your moving a little.
Street tires top of 4th is about 115, but on 28inch ETdrags should be around hi 130's.

jmm98LS1

iTrader: (28)

I still got 24mpg with 4.56's in a heavy 9" and heavy 17x11 wheels. Got 4.30's in it now, gets around 25-26.

BlackScreaminMachine

iTrader: (17)

If your going to roll with that gear, the car's tune will need to be set up to be lean from idle to about 2.5k and when the car goes to WOT, the A/F will drop down to the appropriate level given the engine setup.