Hi guys i have a 68 camaro race car i had the 2spd glide rebuilt. now i have a problem the trans keeps going in foward gear when i have it in park or netrual. It runs through the gears and the trans brake seems to work fine.I have checked the shifter lever and it is fine.Reverse also works fine.the guy said it had all the best parts in the trans he said that 2nd gear was gone wich is what i was told when i bought the car. But when i bought it it had all the same problems it has now .with the execption of 2nd slipping wich seems to be fine now.the guy doesnt seem to want to stand behind his work and fix it now and i cant aford to pay another 400 so i woud like to know if it is something i can fix myself.i am a mechanic but do not have alot of experiance with trans.thanks for any help or advice.
2spd glide question
admiral
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Hi guys i have a 68 camaro race car i had the 2spd glide rebuilt. now i have a problem the trans keeps going in foward gear when i have it in park or netrual. It runs through the gears and the trans brake seems to work fine.I have checked the shifter lever and it is fine.Reverse also works fine.the guy said it had all the best parts in the trans he said that 2nd gear was gone wich is what i was told when i bought the car. But when i bought it it had all the same problems it has now .with the execption of 2nd slipping wich seems to be fine now.the guy doesnt seem to want to stand behind his work and fix it now and i cant aford to pay another 400 so i woud like to know if it is something i can fix myself.i am a mechanic but do not have alot of experiance with trans.thanks for any help or advice.
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You did not say if it was going forward under power? If you are saying that it rolls forward when in park,, I would say the park pawl mechiniusm is broke or gone? Netural I can understand. How about the valve body levers and plungers, are they in correctly?
thanks for the info the car is on jack stands.i havent lowered it on the ground yet to see how it does.but sometimes the trans works fine like it is supposed too.it goes into park but its seems like it starts messing up when it gets warm.and when it is rolling foward in park it makes a little clikking noise but i have checked to make sure it is ingaged all the way in park and it is.
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Clinking is my thinking that your park pawl is dragging over the lock dogs, like the spurs on a gear,, the pawls are sorta square, and I think your lock pin should drop in the slot , unless the lock is broke? rounded off? If you can get an exploded view, maybe you can see what I am talking about... Been many years since I got a pg apart but they all work the same.
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You have to pull the pan to check what I am talking about..
yes were the roller pin rides on the teeth when you shift but i have not pulled the valve body because i really dont know what to look for.whould the prob have anything to do with the trans brake only working part of the time?because when i first put the trans in the car everything worked fine then after about 10min after runing and going through the gears the problem started
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Transbrake I think is a solenoid that lock trans in first and reverse? Never got into it much,, I let my trans guy do that but I think it would be common to ensure this safety . You may need to take pan off and look, maybe something slipped off. If you can hear the klinking then thats my guess unless its broke and parts should be in pan..
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It's entirely normal for a Glide to have the tires roll in neutral. The input shaft will slightly turn and thus you may hear a 'rattle' or 'clink' noise from the planetary gears at the low speed they move at. As soon as you put the wheels on the ground there's enough resistance that it probably won't move. Unless you rev it up in neutral with your foot off the brake pedal, in which case it may move a tad. But, it should NOT move in park. There are a few possibilities in there to cause that. It's rare to have a park pawl wear enough either on the tooth or on the area where the park link rod rides on it to push it over to engage the planetary for park. If the shifter selector 'rooster comb' was overtightened it can change the geometry just enough to not allow the rod to push the pawl fully in to the slots to engage park. Or, there may be just enough core shift that the pawl guide bracket which is held to the case by two bolts needs to have it's bolt holes elongated a tad so as to shift the bracket a tiny bit to let the taper on the rod push the pawl deeper out into the planetary. No matter what the issue, they can all be handled with the trans still in the car. You may need to drop the valve body for some repairs. If the pawl itself is worn, you'll also need to loosen the low band adjuster bolt near the shift shaft entry area on the outside of the case, and then back the bolt off enough to let you drop the left and right band struts out of the way. Once you do this, then you can pull the retaining clip off the pivot pin for the park pawl (after you remove the valve body/park pawl guide bracket and park pawl spring) and slide it ahead enough to remove and replace the pawl. If worse comes to worse, I can try to get some photos up for you to use as a guide this week...
Yes picts would help and would that have anything to do with the transbrake only working part of the time? Everything seems new in the trans so i wouldent think the transbrake would be broke.The man who did the work i think only replaced what he thought he could get away with i think he only replaced the 2nd gear clutches and didnt touch first gear.And like i said he is saying it is not his problem now.So thank you very much for youre help and advice.When i need parts i will give you a call first.Thank you again.
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I needed to dump some photos from the camera card before I took anymore, so it is coming! As to the last post on low gear ratios in a Glide, the two OEM ratios are 1.82 (weaker due to stamped carrier/smallish gears) and 1.76 (stronger cast carrier/larger gears). There are aftermarket gears from the 1.6_'s on through 2.1_'s. You can externally determine what OEM gear you have in three ways: pull and measure the input shaft tip-to-tip (1.82 is 12 7/8" and 1.76 is 12 5/8"), measure the diameter of the output shaft (1.82 is 1.145" and 1.76 is 1.170"), or you can tighten up the low band bolt so it holds the drum and then you can rotate the input shaft and see how many turns it must make before the output shaft makes one revolution. It will take either 1.82 or 1.76 turns to rotate the output shaft one turn. Just remember to reset the low band before running the trans. Snug the bolt in to 72 in/lbs and then back it out 3 3/4 turns and snug the locknut.
Its a 1.76 first gear and is there any chance the trans brake could be causing the park to not ingauge?it seems to work fine until the trans gets warm and then sometimes it works and sometimes it doesent i am going to put the car on the ground tomorrow and drive it and see how it does.I dont thank my neighbores will like me after running my bigblock 540 with open headers down the street.But i dont want to waist my time and get it all the way to the track and not be able to run.So i will let you know what it does tomorrow.Unless i am in jail thanks again for youre help
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How much converter clearance to the flexplate did you have? You check this by first pushing the converter fully back into the trans and measuring from the mount pads to the flexplate before installing the bolts. It should be 1/8" min to 3/16" max. If it's less you may have damaged the front pump. Ditto if it's more. Or the front pump may have wear in the gear cavity/crescent area. When you mention it happens when warmed up leads me to think it could be a line pressure issue due to a front pump wear situation.
I thought the park feature is totally mechanical, nothing to do with the hydraulic system?
Park is Park, unless a mechanical part is broken, right?
I do know Park can be selected in a Powerglide at 100 mph and lock up the rear tires.
Park is Park, unless a mechanical part is broken, right?
I do know Park can be selected in a Powerglide at 100 mph and lock up the rear tires.
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Ouch! Nothing broke? What happen to the lockout?
The case eventually broke, after 3 seconds of engagement.
Wasn't my car, though. I watched(cringed) from the sidelines.
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I was referring to issues with the transbrake, not park. Yes the park system is purely mechanical. He may have two separate issues going on there...
i got the car down today and everything worked fine except. The car still doesent go into park it wont roll but you can push it buy hand and it clicks while rolling.Can someone let me know what to look at first in the valve body. Thanks for any help
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