The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - C30 dually rear diff gearing options help please

**kwmech** · 01-01-2022, 10:02 PM

If you plan on keeping the truck long term then suck it up and put in either a Gear Vendor or a 4l80e. I would do this first. If that is still not enough then step up to a 3.73. If the engine is somewhat built then it will have no problem pulling any weight through the taller gear.

01-01-2022, 10:02 PM	#8
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,389	Re: C30 dually rear diff gearing options help please If you plan on keeping the truck long term then suck it up and put in either a Gear Vendor or a 4l80e. I would do this first. If that is still not enough then step up to a 3.73. If the engine is somewhat built then it will have no problem pulling any weight through the taller gear.