The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 454 Dually with 4.56 rear diff, what auto trans to use

**kwmech** · 02-09-2022, 05:21 PM

4.10s with an overdrive is the sweet spot, but it is pricey. Have that set-up in my dually flatbed. I have a T400 with a gear vendor in that truck. My pick-up has a Ranger OD. And my Suburban was converted to a 4L80

02-09-2022, 05:21 PM	#19
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,389	Re: 454 Dually with 4.56 rear diff, what auto trans to use 4.10s with an overdrive is the sweet spot, but it is pricey. Have that set-up in my dually flatbed. I have a T400 with a gear vendor in that truck. My pick-up has a Ranger OD. And my Suburban was converted to a 4L80