Camonly99transam

I have a cam and exhaust only 99 trans am,with a 4l60e trans with a 3200 circle d converter,with a 8.8 rear end with a 373 gear wanting to swap to a 430 cause the 373 feels like the factory gear,with the 275/60 radials,anybody on here running a 430 gear with a 4l60e would like to know how you like it,an what kind of rpms ur turning cruising?

LLLosingit

iTrader: (4)

There are online calculators that will tell you what rpm/speed you'll run. All you have to do it type in the info.

FirstYrLS1Z

iTrader: (4)

I'm 4L60E, Yank SS3600, and 4.56s'. 2500 @ True 60mph and 3000 @ 72mph. RPM off a ScanGaugeII and MPH off GPS.
4.30s' should put you at 2360 and 2830.

Crf450r420

iTrader: (1)

http://www.grimmjeeper.com/gears.html

98CayenneT/A

I would be more apt to go with a bigger stall.

HioSSilver

iTrader: (8)

http://www.pszweb.com/car/gears.htm

more better gear calc