ring & pinion question

[slx70]

I have a 8 3/4 rearend with sure grip. The ring gear has 43 teeth and I think the pinion is 10. Can some one tell from this what gear it is? for example 3.91,4.10? I have know glue. Thanks.

 

[805moparkid]

http://www.ringpinion.com/Calc_GR.aspx

says 4.30's

 

[Martythetrimmer]

Divide the ring teeth by the pinion teeth e.g. 43 divided by 10 = 4.3:1 ratio

 

[805moparkid]

Divide the ring teeth by the pinion teeth e.g. 43 divided by 10 = 4.3:1 ratio

good to know!