General_Joser

Building a Fox body with an ls1 i want to put in a Th400, im working on the rear end right now, im going with a 28" tire would the 4.11 gears work well? or should i get different gears, would i be able to drive it on the street?

subhumanzz

iTrader: (46)

my car runs around 3k@55 mph with stock gear set th400, 4.11's and 28" tires. i think top speed with the 4.11's and 28's is around 142 mph.

Minshall

I got a TH400 WITH 4.11s and a 28inch tire. 55 mph is around 3300 rpm. Its also gonna depend on what converter you use too. Mines fairly loose.

SuperSlow02

iTrader: (16)

Same results here 4.11s/28

BlackScreaminMachine

iTrader: (17)

All I can say for street use is to make sure you can monitor temps and run a good cooler. If I wanted a NO O/D trans, this would be the one and I would do exactly this.

General_Joser

sounds good guys 4.11 with 28" tire it is

JRracing

iTrader: (35)

I have a mustang with a th400 and 4.11 gears. It has a 325/50 drag radial on it right now. But It had a 28" tire on it the last two years and I drove it on the street around town a bunch.
I could roll 45-50 pretty easy but much more than than it was turning about 3500+ rpm's. I go on true street drive's in the lsx shootout and it does fine.

tboysen00

iTrader: (1)

What type of rpm's are you running at crusing about 65 with your 325/50? Thanks

ThreeHonks

iTrader: (10)

28s and a 4.11 is a good combo. I will spin about 2800-3000 rpm at 55 mph

nastychevelle

iTrader: (7)

i had a th350 with 4.11's and 28's and i loved it.

blk99sleekbeak

iTrader: (2)

x2 on this question. I have thought about doing a 4.10 but i also have a 50 sidewall (275/50's to be axact) and i still drive it alot on the street. I figured the 4.10 would be too much on the street with this tire and i plan on running the 275/50's for a while. Ill probly just stick with the stock 3.42's