Wow, Off On The Gear Ratio

[Drg racr]

My buddy said I had 4.10's in the rear of my Barracuda. I just got it up on stands today, and turned the pinion to check. It spun 5 revs for 1 rev of the tire, and its a big tire (275/60B14). I'm guessing 4.88's. Might just have to pull the center section and verify.

 

[67Dart273]

You should be able to get a LOT closer than that.

You have limited slip? Carefully count the turns and estimate the fractional turn

Who knows? you might have 5.17's, or some aftermarket ratio, 5.13, 5.38, ??

 

[Drg racr]

It's a Sure Grip axle. It was just barely 5 revs, maybe a shade less. That's why I guessed 4.88.

 

[Mopar367]

It is probably a 4.89 gear ratio. I have a 741 Centre section from an early A body in this ratio. Came factory equipped.

 

[1970Duster]

Just pop the center out and look on ring gear. Only way to know for sure.

 

[OldmanRick]

Is this a good thing.....or bad thing. Maybe you hit the jackpot. :mrgreen:

 

[Supershafts]

5 revs aren't 4.8 revs, 5 revs are 5 revs, so you have 5.1 most likely, 4.8 revs would be 4.88 and just short of making 5 revs.

So take into consideration the slack in the carrier and pin and your 5 revs are most likely 5.13

 

[YoungBlood]

5.13's! Congrats. I've always felt a gnarly 340 would do VERY WELL with those short legs.