Help-Powerglide-big leak when on the brake?

ss3011 · 07-07-2014, 08:31 PM

Seems strange that the case should fail at that seam line. What line pressure do you run in Rev, and when the Trans Brake is on? Maybe the pressure is too high and stresses the case.

cad · 07-07-2014, 10:49 PM

Dye immediately showed when on the brake. dont know what pressure it is set at. Since the ultracase isnt available in time for a 3 race weekend, I ordered a 1 pc sfi glide case and have the trans pulled. Appt made with my trans guy for wed night if fedex shows up on time. He will swap everything over while I wait for $100. Ultrabell will be for sale...lol. dated dec 2013 I believe.

Pedigo Perf · 07-08-2014, 07:29 AM

Check the driveshaft for run-out (before you pull the transmission back out) and get it balanced if you have time. I had an off center pinion yoke that was causing run-out and it killed 2 cases for me before I fixed the issue.

SGSST109E · 07-08-2014, 08:04 AM

A bent drive shaft will do it.

07-07-2014, 08:31 PM	#1
ss3011 Senior Member Join Date: Feb 2002 Location: Southeast Michigan Posts: 910 Likes: 70 Liked 239 Times in 114 Posts	Re: Help-Powerglide-big leak when on the brake? Seems strange that the case should fail at that seam line. What line pressure do you run in Rev, and when the Trans Brake is on? Maybe the pressure is too high and stresses the case.

07-07-2014, 10:49 PM	#2
cad Senior Member Join Date: Apr 2009 Location: Omaha, NE Posts: 703 Likes: 204 Liked 93 Times in 52 Posts	Re: Help-Powerglide-big leak when on the brake? Dye immediately showed when on the brake. dont know what pressure it is set at. Since the ultracase isnt available in time for a 3 race weekend, I ordered a 1 pc sfi glide case and have the trans pulled. Appt made with my trans guy for wed night if fedex shows up on time. He will swap everything over while I wait for $100. Ultrabell will be for sale...lol. dated dec 2013 I believe.

07-08-2014, 07:29 AM	#3
Pedigo Perf Member Join Date: Feb 2008 Location: Wichita Ks Posts: 383 Likes: 71 Liked 30 Times in 17 Posts	Re: Help-Powerglide-big leak when on the brake? Check the driveshaft for run-out (before you pull the transmission back out) and get it balanced if you have time. I had an off center pinion yoke that was causing run-out and it killed 2 cases for me before I fixed the issue.

07-08-2014, 08:04 AM	#4
SGSST109E Member Join Date: Jun 2007 Location: NJ Posts: 351 Likes: 62 Liked 126 Times in 61 Posts	Re: Help-Powerglide-big leak when on the brake? A bent drive shaft will do it.