Tranny type-TH350 or TH400
Thread Starter
Advanced
Joined: Sep 2003
Posts: 69
Likes: 0
From: near Syracuse NY
Tranny type-TH350 or TH400
Maybe I'm missing something, I've been searching but cannot find how to determine what my Tranny is. I have an '81 350 automatic, and would like to get the B&M Shift Improver but am not sure which of the 2 is the right kit.
Any help on determining what the tranny is?
Any help on determining what the tranny is?
Safety Car
Joined: Oct 2000
Posts: 3,593
Likes: 103
From: Southern Indiana
350 modulator points towards the back of the car, 400 points out the side towards the door.
Also 350 has a passing gear cable going to the carb, 400 has an electric wire going to the gas pedal.
Also 350 has a passing gear cable going to the carb, 400 has an electric wire going to the gas pedal.
Pro
Joined: Apr 2006
Posts: 733
Likes: 1
From: Coquitlam British Columbia
Pans are different too
The oil pans are a different shape the link below will show you what the 350 oil pan gasket looks like and if you look to the right on the same page you will see a 400 pan gasket which some say looks like the state of Texas.
http://www.ecklers.com/product.asp?p...2&dept_id=1852
http://www.ecklers.com/product.asp?p...2&dept_id=1852
Race Director
Joined: Jul 2004
Posts: 12,706
Likes: 329
From: Scottsdale Arizona
I disagree. The 81 automatics came with a TH350C. Unless it was changed along the way, that's what it should have.
If you're looking for a shift kit, make sure that it's compatible with the C, which is a lock up torque converter version. Otherwise, you'll lose the lock up.
If you're looking for a shift kit, make sure that it's compatible with the C, which is a lock up torque converter version. Otherwise, you'll lose the lock up.
Last edited by CA-Legal-Vette; Jul 5, 2007 at 04:20 PM.
Racer
Joined: Mar 2006
Posts: 264
Likes: 1
From: west central INDIANA
I installed a B&M kit in my 80, 350c lock up converter . You will need a Kit for a 80-86 350c. I installed the street/strip mode.It gets a little rubber in 2nd, with the 190 hp L48. I was impressed. Do yourself a favor & pull your pan and look for friction material, BEFORE you place your order, if you find dark gray material in the pan your tranny may not live long!
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