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Old 05-04-2006, 05:56 AM Moderator

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crazy C4

I'll try not to write a book but i need to give some back ground on the deal..

Last summer a customer gave me a good working C4 to install a tail bushing/seal, front seal and a trans-go jr kit.Piece of cake right??? well summit sent him the wrong converter. It was in a box with the 1500rpm stall part number but it was really like a 3500 plus...He did not think anything about it untill it was in the car and the thing would not move. It is in a street rod with a 100 percent stock 302. So he takes the thing back out, and thats a story in it self because the entire engine/trans combo has to come out... I then took the entire transmission apart just to be safe. I only needed to replace one clutch pack. It was probably fine but while i was there i just did it. Everything air checked fine and the stack clearances were good. This transmission was rebuilt maybe 10,000 miles before i got it. The thing was really nice inside.

Now to the problem at hand. He tells me that the thing will loose reverse if he drives it just a short distance and then goes to leave. If he lets it sit over night reverse works fine, If he drives it a distance, say 15 miles or more reverse is fine. If it does the short distance deal some times he can get reverse and sometimes not... I am getting the car in a few weesk to check it out,,,,, Any ideas where to look first?????


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Old 05-04-2006, 09:12 PM
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when you get the car back on your test drive see if high gear is still good. then test 2nd to low for engine braking, if that checks to be in correct working order replace valve body some early 68-70 would have 2-3 shift valve trouble no reverse. bad news can be worn ring lands in direct drum broken sealing rings on pump stator this will of course burn out the plates.
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