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

Need TH350 Rebuild for 600 HP...Where to go?

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Old Jul 13, 2009 | 11:53 AM
  #1  
BadaPwned's Avatar
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From: MI
Car: 1984 TA 15th Anniv. Addition
Engine: 355 SBC
Transmission: TH350
Axle/Gears: 4.56
Need TH350 Rebuild for 600 HP...Where to go?

Alright guys, second gear in my trans went out this weekend, time for a rebuild.

The TH350 is sitting behind a 450 HP SBC with a 150 shot of nitrous.

Im in the Metro-Detroit area, any suggestions on where I should take / send it to????

Thanks alot.
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Old Jul 14, 2009 | 04:11 AM
  #2  
Pro Built Automatics's Avatar
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From: Calimesa, California, U.S.
Re: Need TH350 Rebuild for 600 HP...Where to go?

Are you looking at building it yourself? or having it built? Dana
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Old Jul 14, 2009 | 06:23 AM
  #3  
BadaPwned's Avatar
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Joined: Jan 2009
Posts: 126
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From: MI
Car: 1984 TA 15th Anniv. Addition
Engine: 355 SBC
Transmission: TH350
Axle/Gears: 4.56
Re: Need TH350 Rebuild for 600 HP...Where to go?

Originally Posted by Pro Built Automatics
Are you looking at building it yourself? or having it built? Dana
Looking at having it built.
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Old Jul 15, 2009 | 01:10 AM
  #4  
ed o's Avatar
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Joined: Nov 2008
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From: sacramento california
Car: 64chevelle/smokey trans am
Engine: 350 p600 pro charger/350
Transmission: 350/700r4
Axle/Gears: 3.36
Re: Need TH350 Rebuild for 600 HP...Where to go?

that trans should get a thick center support, wide roller sprag, upgraded third gear drum with a sprag, not a cam style, a heavy shift kit, and good clutches/steels kit. I'd recommend a bolt in center support for that much motor, and build off a bearing style core for the most torque transfer. I build these locally, sorry. p.m. me and i'll send photos of what I would recommend during your build. I run a supercharged chevelle with a th350 for over 9 years with these upgrades, never been touched, and always abused.
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Old Jul 15, 2009 | 06:31 AM
  #5  
BadaPwned's Avatar
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Joined: Jan 2009
Posts: 126
Likes: 2
From: MI
Car: 1984 TA 15th Anniv. Addition
Engine: 355 SBC
Transmission: TH350
Axle/Gears: 4.56
Re: Need TH350 Rebuild for 600 HP...Where to go?

Thanks for the input. I found a guy local here. His name is Mike Ridings. He got recommended by another good mechanic on another forum. I should be dropping my trans off to him today. Ill let you guys know how it turns out.

Thanks for the extra info Ed. I may print off what you stated and show the guy. We will see, as limited information I know now, their could be very little wrong or a ton of things wrong with the trans so...

But ill update you guys when I get the trans back. Thanks again, really appreciate the advice.
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Old May 3, 2012 | 02:15 PM
  #6  
Lionel Newby's Avatar
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Joined: May 2012
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Re: Need TH350 Rebuild for 600 HP...Where to go?

Originally Posted by ed o
that trans should get a thick center support, wide roller sprag, upgraded third gear drum with a sprag, not a cam style, a heavy shift kit, and good clutches/steels kit. I'd recommend a bolt in center support for that much motor, and build off a bearing style core for the most torque transfer. I build these locally, sorry. p.m. me and i'll send photos of what I would recommend during your build. I run a supercharged chevelle with a th350 for over 9 years with these upgrades, never been touched, and always abused.
Are you still building these turbo 350's. I just had the turbo 350 got out in my 1983 MC ss with a 383 stroker 460HP/460TQ
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