Transmissions and Drivetrain Need help with your trans? Problems with your axle?

Torque converter help!

Old 03-23-2019, 05:29 PM
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Car: 1991 Pontiac GTA
Engine: 5.7L TPI
Transmission: Built 700r4 w/2000 stall
Axle/Gears: BW 9bolt with 3.27s
Torque converter help!

So I am having my 700r4 rebuilt, again, and I am looking for stall speed options. Its a 91 GTA 5.7 TPI. Mod list is as follows: Shorty headers, msd6al ignition box, emissions delete, hooker supercomp cat back, 9 bolt 3.27 rear, panhard and lcas. Tune is crappy and will need retuned. I was running a 2k stall and not happy with launching it vs the stock converter. My mileage also dropped 4mpgs, but probably tune related. The people im ordering the TC from recommend either a 2300 or 2600 and my trans guy is recommending a 3k. Not much daily driven, but will make a 3hr drive once a year, and I drive aggressive on the street. Will be a street strip car. I have a tru cool 40,000 BTU cooler as a stand alone.
Old 03-24-2019, 08:59 PM
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Car: 91camaro rs,2014 silverado 5.3L
Engine: 5.7Lcarb,5.3L
Transmission: 700-r4, 6L80
Axle/Gears: strange 3.73's
Re: Torque converter help!

what cam do you have?
Old 03-25-2019, 02:08 AM
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Car: 86 Imponte Ruiner 450GT, 91 Formula
Engine: 350 Vortec, FIRST TPI, 325 RWHP
Transmission: 700R4 3000 stall.
Axle/Gears: 9 Bolt Torsen 3.70
Re: Torque converter help!

3000. Definitely. But get a quality one. There's not much worse than a poor quality high stall converter.

GD
Old 03-26-2019, 03:35 PM
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Join Date: Sep 2008
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Car: 1991 Pontiac GTA
Engine: 5.7L TPI
Transmission: Built 700r4 w/2000 stall
Axle/Gears: BW 9bolt with 3.27s
Re: Torque converter help!

Supposedly it's been replaced with a "baby" cam, but I highly doubt that. So I am assuming stock. Rather not have to tear apart to check. I understand that the TC is directly related to the cam specs.
Old 03-26-2019, 04:00 PM
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Car: 86 Imponte Ruiner 450GT, 91 Formula
Engine: 350 Vortec, FIRST TPI, 325 RWHP
Transmission: 700R4 3000 stall.
Axle/Gears: 9 Bolt Torsen 3.70
Re: Torque converter help!

I have a 3000 in my (mostly) stock 86 LB9 and I love it. It has a tiny peanut cam in it. 9 bolt with 3.70 and a Torsen. Lots of fun. Don't worry about it - go with what your trans builder is telling you.

GD

Last edited by GeneralDisorder; 03-26-2019 at 05:17 PM.
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