Visit The Dirt Forum for More Information

Author Topic:   Powerglide Guru's, need some help
posted March 07, 2004 09:18 AM
Got a fresh glide running direct drive (coupler and shaft) with a ball valve. while running the car today, went to test the tranny and take it for a quick spin... dropped it into gear and even with the valve open it still moved.... is there any adjustment to these trannys?? once i got rollin i just closed the valve all the way, and it kinda made a vibration, or grinding noise, could have been vibrations though, going to check that out again just to be sure i think that is nothing major..


posted March 07, 2004 05:15 PM
I run a Bushore powerglide and we use a clutch pedal to go in neutral. You get the RPM's up and shift into first. with this system we never had a problem. What I would do is call who ever you got the glide from and ask them. Bushore was super about explaining how to work my system!

posted March 07, 2004 05:34 PM
i ran the car again, no vibration with valve closed...
just need to see if its going to loosen up now...

posted March 07, 2004 05:36 PM
any other suggestions on it loosening up, any adjustments i can do..

posted March 07, 2004 06:23 PM
im not using a clutch pedal, only a ball valve...
the car doesn't "try" to move, it does move... way too much, it'll kill it if your not revving itup...

Tailor Made
posted March 07, 2004 10:21 PM           
Do you have a rear pump? If so you may be pumping more then you can dump through your return hose. This will create a back pressure so the internal clutch pack won't fully disengage.

posted March 07, 2004 10:32 PM
no clue on rear pump, tranny was built by a guy in town who has done them for years... im thinking the ball valve may be bad... the valve was in a car that toasted a few trannys and i wonder if maybe thats the reason... how do i tell if i have a rear pump

Racer 10
posted March 08, 2004 05:34 AM
If your ball valve or lines are too small it can cause that same problem. If it can't dump enough volume, it will build presure and apply the clutches, the fact that it was on another that failed may be a clue to this. Also if you warm it up first and it gets better,that tells you the same thing warm thinner fluid gets away easier.

posted March 08, 2004 06:42 AM
how should i warm the tranny up??? my lines are pretty big i can check and see what an size they are... its the same size all the guys are using around here... i'm going to buy a new ball valve today also... see what it does. if you have any other suggestions let me know i'm open to anything

posted March 08, 2004 08:11 AM
If that doesnt work try re adjusting the first gear band. If its to tight it cant disengage.

posted March 08, 2004 08:46 AM
There is a difference in ball valves. You need a 1/2" HIGH FLOW ball valve.

posted March 08, 2004 10:55 AM
adjust low gear band its the allen screw by
the shifter lever. Screw it in until snug
then back out four turns and lock jam nut.

posted March 15, 2004 09:54 PM
The ball valve is only to circulate the fluid at the pump inlet and pressure side. I had the same problem as you described on my sportsman car. there is no fix for this condition. There are other alternatives for making these powerglides work without external linkage or ball valves. PM me and let me know where you live and i will see if I can help you out....Paul

posted March 16, 2004 08:26 AM
Give Burt Brown a call at 440-997-5309 or I have been dealing with him and had not one issue with his tranys. This is not ment to be a plug but I have had great luck with his glides and for that reason I will not be going to a Brinn type, his hold together.

posted March 17, 2004 09:02 PM
I have bought a bushorse and I do not have to run a valve or a clutch pedal. Pull it down in drive and the more gas you give it the more pressure it has this is what gear i use to get around in the pits and to start off in, then when I get thr rpms up I just pull it down into low. You can change any old style glide into one as long as it has a rear pump.I have tryed it already it works.

posted March 29, 2004 01:37 PM
Just had the same problem with a new bushore. Another racer who has used several said that this usually goes away after a few races. I just started the car in neutral and just bump it in and out of reverse to get it out of the pits and go forward in neutral by gently pushing the pedal. After the car is on the track, then move it to low or second.

Another alternative is to drop the pan and drill a 1/16" hole in the tube (I think there's only one you can see below the valve body) to drop the line pressure. I haven't done this to mine yet (hopefully it loosens up next race), but it's only supposed to affect 1st and reverse.

If I drill it I'll let ya know.....getting tired of jerking the car around trying to get outta the pits....sure it looks stupid, but what do ya do?

Back to the Archives