ramman7284
Well-Known Member
i have a 72 duster was originaly a standard trans car has small rear end with small bolt pattern im curious as to what ratio the rear end has
rear end help
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OldmanRick
Well-Known Member
From a previous thread that "69 Cuda 440" had posted....
http://www.forabodiesonly.com/mopar/showpost.php?p=1970265168&postcount=71
http://www.forabodiesonly.com/mopar/showpost.php?p=1970265168&postcount=71
Don't you mean Hamtramck-Historical?
OldmanRick
Well-Known Member
I suppose so...I just grabbed it from the other thread. You are probably correct. Wasn't trying too steal, just trying to help.
ramman7284
Well-Known Member
ok what size would the stock rear end be cause i know its not the 8.75
I think your best bet would be to jack up the car and turn the passenger tire and count the number of revolutions the tire makes in relation to one revolution of the driveshaft! If the tire rotates almost 3 times for instance, your ratio would be in the 2:94 range and so on! May be easier to figure that way unless you have the build sheet to check the code! Geof
Most likely a 7 1/4 rear with a 2.76 ratio. That's not set in stone but it is a very common rear.
mopar jimmie
Mopar Jimmie
If its an 7.25 you can take the cover off and the ratio will be stamped on the edge of the ring gear
My mental telepathy is on the blink today. If you could post a good picture of the rear end in your car, it would greatly help.
ramman7284
Well-Known Member
Ya I say it's the 7.25
ramman7284
Well-Known Member
the pic is upside down
OldmanRick
Well-Known Member
Yes...7.25. Looks nice and clean though...at least on the outside.
ramman7284
Well-Known Member
ya i dont hear no noises from it and its held up so far done a few hard take offs when the car had a 2bbl now has a 4bbl and just needs to b tuned and hopefully it holds up to it then
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