Soft engine mounts can also cause this

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"When you find a big kettle of crazy, it's best not to stir it." - Pointy-haired Boss

1964 Valiant V200, 225/Pushbutton 904
BBD, CAI, HEI, LBP, AC, AM/FM/USB, EIEIO

Hi there,

Can anyone tell me what is "reverse band" and how to adjust it?

Thank in advance!

A reverse band is located inside the transmission at it's rear. It is used to apply the low/reverse drum and is adjusted after the pan has been removed by loosening the lock nut and rotating the threaded stud, thereby tightening or loosening the band.

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"You know a car is really yours when you've touched every fastener on it." -David Freiburger

After changing rear ends from 8.25 to 8.75 and having the drive line cut to size, my 71 Demon developed a clunk going into reverse. It turned out that I had measured the drive line to short which left the yoke sitting outside the tranny to far. At this point I believe the clunk came from the wobble effect of the yoke not being properly seated into the tranny. Upon having the drive shaft cut to a more precise size, the clunk went away. Measuring the drive shaft to it has an exact 3/4 inch tolerance to the rear end is key.

Neither of mine go clunk when I shift into reverse. Should I be worried?

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If it was easy, everybody would be doing it.