700R4 identification question

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Feb 21, 2004 | 04:09 PM

iroczrockz

Thread Starter

Senior Member

Joined: May 2002

Posts: 813

Likes: 1

From: Summerville, SC

Car: 91 RS Camaro

Engine: 305 TBI

Transmission: 700R4

Axle/Gears: 2.73

700R4 identification question

Does anyone know how to identify what year and make a 700R4 came out of? Maybe by the numbers on the side? Also when they say 27 splines vs. 31 splines which splines are they talking about? The smaller ones or the bigger ones up front? Thanks

Feb 22, 2004 | 01:38 AM

TKOPerformance

Supreme Member

Joined: Dec 2003

Posts: 2,391

Likes: 1

From: Newark, DE

Car: '86 Camaro, '02 WRX, '87 K5, '67

Engine: 350 TPI, 2.0turbo, 383 in the works, 289-4BBL, 232, A-head 4-cylinder

Transmission: T56, 5-speed, 700R4, C4, T176, semi-auto 2-speed

Axle/Gears: 3.73, 3.90, 4.88, 3.55, 3.54, 7.00

The spline difference is for the input shaft of the trans. Not the front pump drive. It's the inner set of splines.

The easiest way to be certain of the year is to drop the pan and look for the auxiliary valve body. This started in '87 and is one of the reasons the '87 and up 700R4s are considerably better than the easrlier ones.

Feb 22, 2004 | 11:16 AM

iroczrockz

Thread Starter

Senior Member

Joined: May 2002

Posts: 813

Likes: 1

From: Summerville, SC

Car: 91 RS Camaro

Engine: 305 TBI

Transmission: 700R4

Axle/Gears: 2.73

Thanks, I learned about the spline difference after a little help yesterday from Scott who I bought a tranny from. I don't know where I got 31 splines from. It will easily throw you off though if you don't know which set of splines to count. Thanks for your help though.