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**swervin ervin** · 06-04-2003, 07:20 PM

They are 30 splines. A 3 series goes up to 3.73, and a 4 series is needed for 3.73 up. Although, I think you can buy aftermarket
3.73 and lower gears for a 3 series carrier.

06-04-2003, 07:20 PM	#2
swervin ervin You get what you pay for Join Date: Dec 1999 Location: Cherryville, NC Posts: 4,798	They are 30 splines. A 3 series goes up to 3.73, and a 4 series is needed for 3.73 up. Although, I think you can buy aftermarket 3.73 and lower gears for a 3 series carrier. __________________ Mike 1985 Chevy C-10