Stock class transmission case breakage

Phillip marvetz · 06-09-2011, 06:27 PM

I have seen several th200 break the cases, somebody even sells a girdle to prevent it.

Grant Eldridge · 06-09-2011, 08:31 PM

I have broken several TH200 cases. In my situation, I fabricated a brace along the passenger side of the case connecting the two factory "ears" made of 1/2" thick aluminum about 1" to 1 1/2" wide. In addition, I bought a Turbo Action cast aluminum deep pan to help stiffen the case. The third item was to install a torque strap on the front left cylinder head to the frame. After those changes, there has been no further breakage. If you do these changes, be prepared to notch the crossmember to clear the pan on a Camaro or Nova. Also, the transmission cooling lines need to be figured out before installation of the transmission because the brace (at least the one I made) makes it almost impossible to install the upper line afterwards in the car. We used a 45 degree angled top end on a hydraulic hose to solve this problem for our cooler lines. Hope this helps.......

Grant Eldridge
E/SA 6650

tracyjw · 06-10-2011, 08:25 AM

Quote:

Originally Posted by Phillip marvetz

I have seen several th200 break the cases, somebody even sells a girdle to prevent it.

If the girdle works than that is great. We do have a 200 metric bellhousing to a GM engine that is available. It is available through a distributor who paid the tooling and etc... to make the product for their specific market. It may be of interest to those racers with a 200 metric transmission. Thanks for your input.

tracyjw · 06-27-2011, 01:28 PM

I was in Norwalk this past weekend at the NHRA event. For those racers who are interested interested in safety and have case breakage issues I suggest that you voice your opinion to Bruce Bachedlder of NHRA. They are willing to listen and look into the matter further. Your safety is important to the manufacturers and the sanctioning bodies. If you need contact information please e-mail me at tracyw@racewithjw.com.

Thanks

GUMP · 06-27-2011, 04:50 PM

What case is used on the Cobra Jets and Challenger 2-speeds?

tracyjw · 06-28-2011, 07:51 AM

Quote:

Originally Posted by GUMP

What case is used on the Cobra Jets and Challenger 2-speeds?

I am not sure, but I will check into it and get back with you.

06-09-2011, 06:27 PM	#1
Phillip marvetz Senior Member Join Date: Oct 2008 Location: Lynden ,WA Posts: 820 Likes: 0 Liked 3 Times in 3 Posts	Re: Stock class transmission case breakage I have seen several th200 break the cases, somebody even sells a girdle to prevent it. __________________ 2009 V/SA Record Holder

06-09-2011, 08:31 PM	#2
Grant Eldridge Member Join Date: Jul 2007 Posts: 124 Likes: 0 Liked 0 Times in 0 Posts	Re: Stock class transmission case breakage I have broken several TH200 cases. In my situation, I fabricated a brace along the passenger side of the case connecting the two factory "ears" made of 1/2" thick aluminum about 1" to 1 1/2" wide. In addition, I bought a Turbo Action cast aluminum deep pan to help stiffen the case. The third item was to install a torque strap on the front left cylinder head to the frame. After those changes, there has been no further breakage. If you do these changes, be prepared to notch the crossmember to clear the pan on a Camaro or Nova. Also, the transmission cooling lines need to be figured out before installation of the transmission because the brace (at least the one I made) makes it almost impossible to install the upper line afterwards in the car. We used a 45 degree angled top end on a hydraulic hose to solve this problem for our cooler lines. Hope this helps....... Grant Eldridge E/SA 6650

06-27-2011, 01:28 PM	#4
tracyjw Junior Member Join Date: Jun 2011 Posts: 8 Likes: 0 Liked 0 Times in 0 Posts	Re: Stock class transmission case breakage I was in Norwalk this past weekend at the NHRA event. For those racers who are interested interested in safety and have case breakage issues I suggest that you voice your opinion to Bruce Bachedlder of NHRA. They are willing to listen and look into the matter further. Your safety is important to the manufacturers and the sanctioning bodies. If you need contact information please e-mail me at tracyw@racewithjw.com. Thanks

06-27-2011, 04:50 PM	#5
GUMP VIP Member Join Date: May 2002 Location: Shelby, NC Posts: 1,823 Likes: 2,167 Liked 2,354 Times in 554 Posts	Re: Stock class transmission case breakage What case is used on the Cobra Jets and Challenger 2-speeds?