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

30 or 27 spline for TC?

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Dec 27, 2004 | 08:34 AM

#1

StealthElephant

Thread Starter

Supreme Member

Joined: Jan 2003

Posts: 1,059

Likes: 0

From: Woodbury, NJ

Car: 87' Iroc

Engine: 350

Transmission: 700R4

30 or 27 spline for TC?

I've got an 87' and I'm ordering a 2400 stall converter tonight, I'm going to pick up a TCI 12" lockup and I wanted to be sure. I want 30 spline for my trans right?

I'm looking to get this:

http://store.summitracing.com/partde...NVERTERS+CHEVY

OR

http://store.summitracing.com/partde...NVERTERS+CHEVY

Why the huge price difference if they are both rated the same?

Last edited by StealthElephant; Dec 27, 2004 at 09:23 AM.

Old

Dec 27, 2004 | 10:31 AM

#2

Junior Member

Joined: Jul 2002

Posts: 92

Likes: 0

From: Beaufort,N.C. near the coast

Car: 92 Z28 Camaro

Engine: 350 TPI : Supercharged

Transmission: TH700R4

I too am looking to get a converter for my 92, and was told that after 1985 models they are 30 spline.

Old

Dec 30, 2004 | 08:15 PM

#3

Banned

Joined: Sep 2000

Posts: 1,940

Likes: 2

From: Glendale, AZ

Car: 4 Mopars total

Engine: Pentastar power

Transmission: T/F and New Process

Axle/Gears: Three 8 3/4's & one 9 1/4

They actually changed from 27 to 30 spline halfway through the 1984 model year.

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