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

TH350 Rebuild

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Old Feb 21, 2013 | 07:40 PM
  #1  
Cars'n'Guitars's Avatar
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From: Elkhart, IN
Car: 1985 Camaro Iroc-Z
Engine: Currently Deciding
Transmission: TH350 Built
Axle/Gears: 3.73 POSI
TH350 Rebuild

How hard is it to rebuild a TH350? What all is involved and what is the average cost to rebuild for a strong one?
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Old Feb 21, 2013 | 11:50 PM
  #2  
vetteoz's Avatar
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From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: TH350 Rebuild

Originally Posted by Cars'n'Guitars
How hard is it to rebuild a TH350? What all is involved ?
Google works
http://www.nastyz28.com/forum/showth...build_buildup/
http://www.carcraft.com/projectbuild...build_buildup/
http://www.nastyz28.com/forum/showpo...61&postcount=8
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Old Feb 22, 2013 | 02:44 AM
  #3  
Pro Built Automatics's Avatar
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From: Calimesa, California, U.S.
Re: TH350 Rebuild

I have three rebuild kits for this transmission. Go to: https://www.700r4l60e.com/store/home.php?cat=21 The kits are very complete, and come with s free video. There is the one ATSG build book for this unit and they go for $27.00. I offer the very light weight Vega sunshell (drive shell) if you are going to drag race this transmission for slightly quicker 60 foot times.
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Old Feb 22, 2013 | 07:24 AM
  #4  
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From: LONDON, KY
Car: Camaro
Engine: Carbed L98
Transmission: TH350
Axle/Gears: 3.73
Re: TH350 Rebuild

I bought this kit off Dana at Probuilt.

https://www.700r4l60e.com/store/prod...&cat=21&page=1

I didnt get the sunshell, but it made for a nice trans. I installed it myself. I did have to have a piston machined to add the extra clutch, but that was cheap.

I do suggest you pick up a rear clutch spring compressor.
http://www.700r4l60e.com/store/produ...?productid=307

Other than that, I just used simple tools. Some various picks for seals and o-rings. Bushing driver and snap ring pliers.

I ran into a problem or two, but Dana talked me through them.
Thanks Dana.
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Old Feb 22, 2013 | 09:22 PM
  #5  
Cars'n'Guitars's Avatar
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Joined: Jun 2012
Posts: 176
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From: Elkhart, IN
Car: 1985 Camaro Iroc-Z
Engine: Currently Deciding
Transmission: TH350 Built
Axle/Gears: 3.73 POSI
Re: TH350 Rebuild

Okay thanks guys, so this shouldn't be too hard as long as I go slow and take my time? I haven't really dealt with transmissions before, it's really about the only thing on a vehicle I haven't had to work on.
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Old Feb 23, 2013 | 09:05 PM
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From: LONDON, KY
Car: Camaro
Engine: Carbed L98
Transmission: TH350
Axle/Gears: 3.73
Re: TH350 Rebuild

Originally Posted by Cars'n'Guitars
Okay thanks guys, so this shouldn't be too hard as long as I go slow and take my time? I haven't really dealt with transmissions before, it's really about the only thing on a vehicle I haven't had to work on.
My best advice to you is "Research and reading". Use the great pics in the links vettoz posted. I think I used some of the carcraft pics for references. If you get our kit form Dana at Probuilt, he can help you out in a jam.

Oh yeah, Keep everything clean for assembly. Dont use paper towels or anything with lint. Also take pics as you disassemble the trans. Make sure you drive the bushings in straight and dont nick any seals/o rings.
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Old Feb 24, 2013 | 06:03 PM
  #7  
Cars'n'Guitars's Avatar
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Joined: Jun 2012
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From: Elkhart, IN
Car: 1985 Camaro Iroc-Z
Engine: Currently Deciding
Transmission: TH350 Built
Axle/Gears: 3.73 POSI
Re: TH350 Rebuild

Okay thanks guys, I got the transmission today but it will probably be awhile until I get my stuff to rebuild it.
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