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

700r4 rebuild questions

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Old Aug 24, 2011 | 06:08 PM
  #1  
potterc32's Avatar
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Joined: Oct 2009
Posts: 215
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From: Central Ks
Car: 1985 Pontiac Firebird S/E
Engine: 350, .5 lift cam, Holly 650
Transmission: Monster Transmission 700R4-2K stall
Axle/Gears: 4th gen 10 bolt, 3.42
700r4 rebuild questions

I am about to start working on my 700r4 tranny rebuild. I have a couple of questions...
how can i tell (before removing the transmission) whether i have a 27 or 30 spline?
Also, how long should i expect to have the transmission out if I'm working on 2 hours a day? I have a little experience in auto transmissions, but I've only rebuild a turbo 350 a couple years ago.

Does anybody have any suggestions on where to get the rebuild kit, I want to spend about $300 on it, but i dont want some panzy piece of crap.
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Old Aug 24, 2011 | 08:33 PM
  #2  
HawkZ28's Avatar
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From: Lincoln, NE
Car: 86 Z28
Engine: Built 312
Transmission: T5
Axle/Gears: 10 bolt 3.42
Re: 700r4 rebuild questions

Post up the build code on the tranny. IIRC, it's on the rear passenger rail above the pan.

I've got a sheet in the garage that explains how to decode it.
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