Ring and pinion

[ckyracer00]

With a 4:86 r&p i could run a 583 gear ratio but with a 4:11 r&p i can only pull a 549 can anyone tell me why? Thanks in advance

[Dirtman29]

With a 4:86 r&p i could run a 583 gear ratio but with a 4:11 r&p i can only pull a 549 can anyone tell me why? Thanks in advance

Not sure if I'm understanding exactly what youre looking for, but your ring/pinion ratio IS your final gear ratio (with trans in hi gear, 1-1 ratio). From what you describe, with the 486, your trans would be a 1.20 ratio, & Ive never heard of a trans ratio that close to a 1-1. What type trans/rear end are you using?
You multiply the trans ratio & the rear end gear ratio to determine final gearing.

[parrot69777]

He is refering to a quick change rear end. Some have 4:86, 4:57, or 4:11 ring/pinion ratios. I have always ran a 4:86 rear end and had the same issues. When I got a different car....I wasn't aware it had a 4:57 ratio.....so the 5.94 gear I normally ran....only came out to a 5.63 due to the change in the ring/pinion.

[BigBlueFord]

With a 4:86 r&p i could run a 583 gear ratio but with a 4:11 r&p i can only pull a 549 can anyone tell me why? Thanks in advance

Well assuming your talking about a 10" ring gear. You can actually get to a 5.82 ratio by running gear set #35 from Winters.

See page 101 of the Winters 2011 catalog.

http://www.wintersperformance.com/Winters 2011 Closed Tube Catalog.pdf