How to determine gears

[Wes]

Everyone keeps asking me what gears I have in my 67 cuda? How do I determine this?
I know I have a TF 727 and a 2500 stall.

Thanks,
Wes

 

[Burntorange70]

Everyone keeps asking me what gears I have in my 67 cuda? How do I determine this?
I know I have a TF 727 and a 2500 stall.

Thanks,
Wes

Some times there is a tag on the rear end cover with the gears stamped on it. But if the gears have been changed the tag could be wroung now.

The only way I know of with out yanking the rear apart and counting teeth is to.

Jack the rear of the car up. Put a mark on the drive shaft. Turn the rear tier one full turn counting the turns of the drive shaft. if the drive shaft turns three and a half times you have 3.55 gears if it turns all most 4 times 3.91 gears and so on.

Good luck.

 

[Longgone]

Count the number of rotations the driveshaft makes in relation to one rotation of the tire. Example: 3 1/2 turns of the driveshaft to 1 turn of the tire = 3.50 to 1 gear or in Mopar terms/turns a 3.55.

 

[Longgone]

I knew if I replied to this thread that by the time I posted ,someone else would`ve answered with the same reply............ and I was right. Lol!

 

[Burntorange70]

I knew if I replied to this thread that by the time I posted ,someone else would`ve answered with the same reply............ and I was right. Lol!

LOL,Thats what I said to my self too. But it looks like I sliped it in there on you:toothy10:

 

[Wes]

Great info, thanks. I'll try it out.

 

[Swinger71]

If you have an open rear the drive shaft will only rotate halve of the ratio. The other halve is lost in the spider gears in the rear.