jeejee

iTrader: (3)

forgive my ignorance
but what measure is exactely used to state "ring gear diameter" like a ford 9 inch or 8.5 or 8.8 ?

A , B or C ?




thanks, Jeejee

FirstYrLS1Z

iTrader: (4)

I measure the 'A' and you'll find some are 7-1/2 and some are 7-5/8. Both sizes have the same bolt size and pattern and same inside dia. for slipping onto the carrier.

mzoomora

iTrader: (36)

You will also find that higher numeric gears will be larger diameter because of the smaller pinion.

NHRAMAN

iTrader: (1)

You measure at " A " ..

jeejee

iTrader: (3)

oke thanks, so the biggest diameter is the one to go for

eventhough in theory a 6:1 ratio on a small carrier could mean a bigger RING DIAMETER then a bigger carrier with a 2:1 ratio ?


Jeejee

mzoomora

iTrader: (36)

There is no real difference between the 7.5/7.6. The ring gear design was never actually changed, just the pinions looked slightly different and the carriers were slightly different. Getting a 7.6 ring gear in place of an old 7.5 will be no gain, and all the aftermarket stuff is the same.

99Hawk6spd

iTrader: (2)

I know I'm dredging up an old post, but could this be added to the FAQ thread on this forum? I was wondering about how they measured these to, and had to search for it, when I think it is a FAQ for some newbs like me.

jeejee

iTrader: (3)

Good idea

cambirdracing

iTrader: (4)

Not really, just thicker b/c of the smaller diameter of the pinion. You would have to have a shorter in length pinion to have a bigger diameter ring gear.