axle ratio - Moparts Forums

Posted By: bobbyb

axle ratio - 02/20/11 09:03 PM

Can someone tell me the ratio on my rear? I went to tech archives for the axle ratio calculator, but it kept taking me to 1/4 mile calculator.

Anyway the pinion gear has 14 teeth and the ring gear has 41 teeth. The way I used to to do it and I might be doing it wrong, I come up with 2.98?

Posted By: RapidRobert

Re: axle ratio - 02/20/11 09:07 PM

41 divided by 14 is 2.928

Posted By: topside

Re: axle ratio - 02/20/11 09:07 PM

2.928, meaning 2.93s

41 divided by 14 = 2.928

Posted By: bobbyb

Re: axle ratio - 02/20/11 09:22 PM

2.93's, is that a ratio that would have come in a '69 Roadrunner? I'm just not that familiar with that ratio.

Posted By: tt76400

Re: axle ratio - 02/20/11 09:26 PM

wouldn't have come in a '68 Roadrunner, but alot can happen in 40+ years!

Posted By: BigMoneyLewis

Re: axle ratio - 02/20/11 09:26 PM

Not a correct ratio for a '69 Road Runner . They came standard with 3:23

Greg

Posted By: Chi_Town_Runner

Re: axle ratio - 02/21/11 12:48 AM

Recheck your tooth count.

Ring Pinion Ratio

47 17 2.76
42 13 3.23
39 11 3.54
41 11 3.73
43 11 3.91
41 10 4.11

Frank

Posted By: 1_WILD_RT

Re: axle ratio - 02/21/11 12:56 AM

Quote:

Recheck your tooth count.

Ring Pinion Ratio

47 17 2.76
42 13 3.23
39 11 3.54
41 11 3.73
43 11 3.91
41 10 4.11

Frank

Why? 2.93 is a legitimate gear ratio, just not OE in a Road runner.... Things get swapped in 40 years...

Posted By: Chi_Town_Runner

Re: axle ratio - 02/21/11 01:00 AM

Quote:

Quote:
--------------------------------------------------------------------------------

Recheck your tooth count.

Ring Pinion Ratio

47 17 2.76
42 13 3.23
39 11 3.54
41 11 3.73
43 11 3.91
41 10 4.11

Frank

--------------------------------------------------------------------------------

Why? 2.93 is a legitimate gear ratio, just not OE in a Road runner.... Things get swapped in 40 years...

Your right. Didn't mean to imply otherwise.
Just giving him some others. I know when I count them I never get it right the first time around.

Frank

Posted By: 1_WILD_RT

Re: axle ratio - 02/21/11 01:30 AM

Quote:

Frank