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Is this correct ? TH350 swap

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Old Jan 15, 2011 | 01:07 AM
  #1  
mars061's Avatar
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From: Sudbury, ON, CAN
Car: 87 IROCZ Z28
Engine: 3900V6 GT4088 intecooled
Transmission: TH350
Axle/Gears: 3.45 MSF Spool
Is this correct ? TH350 swap

Hi all,

When I bought my camaro, I think it had the wrong trans X-member.

Does this look correct ?

It is a V6 car, came with a 700R4, but now swapped to a 3 spd TH350.

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Do I need both of those X-member pieces (how I bought the car) or just bolt the one square poly mount right to the X-member and ditch the little intermidiate braket there that has the 2 outter poly bushings ?

I'm confused.

Help ?!

thanks.
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Old Jan 15, 2011 | 06:24 AM
  #2  
JamesC's Avatar
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From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: Is this correct ? TH350 swap

Some cars were equipped with a secondary cross member, which is what you have. For a TH350, check the following link:

http://www.spohn.net/shop/1982-1992-...ossmember.html

A search will provide more, such as the info in the link below:

https://www.thirdgen.org/forums/tran...-question.html

JamesC

Last edited by JamesC; Jan 15, 2011 at 06:31 AM.
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Old Jan 15, 2011 | 01:24 PM
  #3  
sofakingdom's Avatar
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Re: Is this correct ? TH350 swap

There are 3 versions of crossmembers for these cars: one that's basically a flat piece that the main mount bolts right to; the one you have; and the one that came in some of the later 6-cyl cars that need all the vibration-damping help they can get, that have this oddball round "hydraulic" mount.

What you have there looks fine, except that the piece for the torque arm doesn't look like a stock torque arm would bolt to it although I could be wrong (I'd have to see it from the other side). That's not how I would go about putting a 350 in one of these cars though; the TA still puts all its force on the mounts, trying to tear them apart. An aftermarket Xmember and TA that mounts the TA directly to the Xmber make A WHOLE LOT more sense. If you don't like what you've got there, I'd suggest ditching the whole thing and getting something like that. See here http://www.spohn.net/shop/1982-1992-...d-Torque-Arms/ for a good example.
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Old Jan 15, 2011 | 06:37 PM
  #4  
84transamdude's Avatar
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From: York, PA area
Car: 84 Trans Am
Engine: 383 Stroker
Transmission: Th350
Re: Is this correct ? TH350 swap

That to me looks like an adapter plate. Since he went from a 700r4 to a th350. when i ditched my 700r4 i got the kit from spohn cross member and tq arm very nice set up IMO
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