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torque arm with TH350???????

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Old Apr 25, 2004 | 10:16 PM
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Default torque arm with TH350???????

My dad has a M6 and is wanting to convert it to a TH350. We think we have everything in line except for one thing.........the torque arm. What are you guys doing with it on your TH400's and other tranny's? Thanks in advance.

Chris
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Old Apr 26, 2004 | 03:52 AM
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make a cross bar to hook the front of the tq arm to. on my friends car we welded the cross tube to the bmr subframes. i made his tq arm and the cross bar from scratch. but i elieve the bmr or any aftermarket tq arm should have a cross bar.
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Old Apr 26, 2004 | 09:22 AM
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Get a aftermarket one like a BMR or Spohn that doesn't mount to the transmission. It's better in the long run as you will not want all that force transferred to the tailshaft.
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Old Apr 26, 2004 | 10:09 AM
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I just finished putting a TH400 in my 99' T/A. I had to build onto my existing crossmember for my Random Technology torque arm to fit. Everything came out o.k. but now I have a vibration at higher speeds and I think it may be due to the rigidness of the torque arm being mounted directly to the crossmember. What does everyone think?
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Old Apr 26, 2004 | 10:18 AM
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The torque arm has to be mounted to a swivel. If you mount it directly to the crossmember I believe you are asking for a series of driveline bind issues. Even the factory torque arm is allowed to move in and out of the tranny mount for it. I certainly never noticed any significant vibrations from my Spohn TA that way.
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Old Apr 26, 2004 | 10:27 AM
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It still has the urethane bushing and the tube can slide in and out of it. Basically I used parts from the TH350 kit and built it the same except I mounted it to the crossmember and not the tail shaft.
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Old Apr 26, 2004 | 03:43 PM
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Cool, I figure I'll buy his torque arm off of him, and he'll buy the BMR track pack. The one that has the bar that runs accross. Just wondering. Thanks

Chris
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Old Apr 26, 2004 | 06:57 PM
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Alston chassis adjustable torque arm (similar to jeg's)- mounts in the tunnel- way up out of the way for any exhaust / trans setup. I love mine.
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Old Apr 26, 2004 | 07:14 PM
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the one i made we mounted it solid.just has a single buthing and bolt connecting it to the cross bar. and it was drove on the street with no prob. i would not do it that way if it was a daily driver and the car has since been taken off the street.
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Old Apr 26, 2004 | 08:07 PM
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never done it before but what about putting a 4l60e tail shaft on the turbo 350 ? will it not work or what? seems like it would to me
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Old Apr 26, 2004 | 08:47 PM
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There is a BMR group purchase going on right now...I am buying the trac pack for my th350...runs about $300.
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