Quote:
Originally Posted by CyberGreyConvertible
Hey, guys. I'm looking to swap out my 3.27's for either 3.73's or 3.91's, but I really can't find a definitive answer of which ratio to choose.
My car:
• 2012 SS, Auto
• Only bolt ons (LT headers) + tune
• NOT planning on getting it cammed
So, which do you think I should go with? I've done searching around the forums, but I still can't decide.. Some people say that 3.91's are best for cammed engines, for example.
All in all; I can't decide which gear ratio to choose! I appreciate all input here,
Thanks!
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There isn't necessarily a right or wrong answer. If you don't plan on doing more than bolt on mods then 3.91s will give you the most bang for your buck. 1st gear is really short though.
By upgrading the factory 3.27s in the stock A6 equipped Camaro SS to the 3.73s you will realize an equivalent torque gain of approximately 15% or 62 lb.-ft. of torque and cruise at 2050 RPM at 70 MPH. By upgrading to the 3.91s you will realize an equivalent torque gain of approximately 20% or 82 lb.-ft. of torque and cruise at 2150 RPM at 70 MPH.