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Could be a number of things. I would check the U joins first then the motor mounts. Could also be the clutch plate (might have faulty springs that help to make it engage smoothly and absorb shock from releasing the pedal to quickly). Could be too much slop in the gears. Excessive wear in the gears and universal joints causes them to be loose and can make a clunk when they slap against eachother. Is the lever going into the transmission striking against something in the engine compartment? Maybe something has come loose and is being struck. Don't want to break a critical component. A broken motor mount will let the engine raise up and then slam down as the load on the engine is changed. (I had this happen in a '66 Caprice... or was it my '73 Fury?) All good answers,I'd check front u-joint 2 cents answer all good answers, but before you dive into clutch or gearbox, check for slop on pinion shaft in differential also try letting clutch out slower

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โˆ™ 2007-02-17 15:23:16
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Q: What are the reasons for a transmission to clunk when the clutch is released?
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You need to use the clutch and the shifter smoothly together!

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