1sick-Z

iTrader: (3)

Car was recently swapped from a t56 to a TH400. I upgraded from a 7675 to a 88mm on my Ls3 as well. I am on the fence with gears. I drive on the street 98% of the time so I still need it very streetable with no OD.

I wan thinking a 3.00 or 3.23.....However I also see some guys running a 2.7x ish gear in great running combos. From experience what is the best for a street car. I would imagine the 2.7x gear would be a great driver and spool the turbo hard but I worry about it taking away accelleration. (I roll race alot)

Any help is appreciated I am ordering my new carrier this week.

Thank you.

Cam72aro

iTrader: (28)

3.08 here with my 4l80. Turbo spools hard. I love the gear in the car. In 3rd cruising Rpm's are still manageable. Of course in od, it's around 2000 at 70. I think it's a great all around gear and for roll racing it does well.

93camaro_zzz

iTrader: (13)

I would go with the 3.23's. 3.23's can take you to 170mph (not taking converter slip into account). Even a little higher if you spin your car above 6600.

1sick-Z

iTrader: (3)

I also forgot to add I have a 3600 stall as well. I am really leaning on the 3.00. Then again though the 3.23 with a 28" tire is the same thing lol

turbocamaro125

iTrader: (3)

I have a 3.00 gear 9" in my BMW with 400...haven't run it yet but that's what imma do with the car is street race and roll race.

skinnies

iTrader: (33)

If you do a lot of roll racing, put the 2.73's in it. I LOVE my glide and 3.08's for roll racing, 90mph in 1st makes it great. I want to step back down to 2.73's again.

WhistlingZ

What size tire are you going to run?

WheelsUp84z

iTrader: (14)

3.08 and 28" tire with my th400 and 3800 stall. My Stall is a little loose for street cruising but works well at the track and still good on the highway. You can have a 3600-3800 and be tight at cruising rpms but mine just isnt. I think at 70 I'm around 3100 rpms so I stick to the 55mph roads where I can.

WhistlingZ

I have 3.50 gears and going with 28" tires to get the RPMS down a bit. They like it right now.

Black98s10

Hey Skinnies what rear tire are u running?

Black Sunshine/ 00SS

iTrader: (1)

Anyone know what a 3:73 on a 26" changes to with a 30" tire? I know I've got to change the gear sometime in the future, but hoping I can get away with what I have while sorting things out.
Is there is a formula? Tire is a 315 x 15 on the car now.

buick_lsx

4in taller tire would be like going down .4 in gearing, so like 3.33 gearing

Stumped1215

iTrader: (9)

http://www.hotrodpitstop.com/tool.php

bad6as

iTrader: (17)

I run 28'' tires and a 3.27 Gear in my car with a th400.

skinnies

iTrader: (33)

ltd has a 255/60 and mustang has a 275/60, both 3.08 gears currently

badhombre

iTrader: (4)

I'm looking to step down now too. 3.73's worked great n/a and nitrous. but the turbo doesn't seem to be liking it much. I have been looking for a gear in the 3.20 range, but for my diff they only have 3.08 or 3.42