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Old 02-08-2003, 03:22 PM
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Post manual valve body question

Well I know that you arent suppose to run these on the street but I do. I blew up my las tranny and I decided to do something a ittle something different so i installed one. my question is: While I am driving the car slowly, ( in First gear) I have the engine reved at or around 3000 rpm and going about 25 mph. and I am going down a hill of coarse I let off the cass and therpm falls. when I hit the gass to go up the next hill it seems like the engine is just free spinning and then the car will start to pick up speed. it is almost like it doesn't have enough tranny fluid in it, but I checked that and it looks normal. would the manual valve body do this type of thing? Cudaman

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Old 02-08-2003, 05:26 PM
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Most of the full manual valve bodies do not provide engine braking. What you are feeling is the roller clutch/sprag 'over running' while coasting down hill, then it grabs as the engine RPM over-comes the output shaft RPM then the engine is pulling the car again.

Did you build the tranny ?

The full manual valve bodies used in off road racing usually have engine braking.

Dont worry how old you are... it is the mileage on your body that adds up.
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Old 02-10-2003, 05:11 AM
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sorry it took so long to get back with you. to answer your question I had the tranny built and I feel like I got a good deal on it.. I have an old mopar 904 trans (the small one) I had to have a new bell housing with a roller berring assembly and a full rebuild with the manual valve body. I have been doing business with the guy since I had the car. But he charged me 590 dollars. But of coarse I had to put it all back together. jk
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