Back to topic..........3.90's are a great gear ratio for street/strip use. I had a 96 Cobra and went with 3.73's and then 4.10's. I started using the car for commuter duty and the 4.10's were a little to steep.
Originally posted by Silver03Snake
National Drivetrain lists 3.90's in their ad in this month's 5.0 mag. They don't show them on their website.
I may have been wrong about Moser. I think it was Motive Gear. I just wonder what is the best brand. As far as FRPP the preferred gear is due mostly to shimming. Shimming is trial and error without a lot of measuring instruments they use in shops. You can almost be dead on 100% of the time a .03 pinion shim will be dead on every FRPP install. I'm sure with other brands they may be too tight to even pull the caps or loose as hell when you first start out so you will end up breaking it down a few times getting the backlash correct. I plan on installing a set of 3.90's in the next 2-3 weeks. I run consistent 7.40's at a local track so I'll know how they work compare to 4.10's.