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Dan Dishon's Transmission Den / no idle line pressure powerglide
« on: March 30, 2016, 01:11:52 PM »
I have a friend that has a powerglide in his altered. It has no line pressure in any gear or on brake at idle. At 2000 rpm it make 80 psi. This is at test port on servo cover. Cannot put gauge on rev. port in car I've been told. They have put 3 pumps and 3 valve body in with no change. The only thing that was changed orig. was all internals were swapped into an ati super case. The trans has been gone thru by 3 different builders and no problems found. I was wondering if the rear of the case where the governor cover is could be leaking causing this. I have not been over to check out, going tonight. Was just looking for a place to start. I have built a few powerglides and have never had any problems but by all means not a trans expert... Thanks