Will a 3.91 rear end work with this cam?

[miller]

Previously we decided on finding a 3.55 rear gear for the charger to go with our choice of the COMP Cams 21-222-4. However, we recently ran across a 3.91 and wondered if that would work with the cam we have already selected and put into the engine. Would this work or will we run into nothing but problems?

[John_Kunkel]

IMHO, 3.91 gears "work" with any thing.

[Sublime/Sixpack]

 

[firefighter3931]

  3.91's are an excellent gear....many stock Mopars came with this ratio from the factory. 



Ron