The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 69 c-10 with 3 speed manual with OD?

**Don Brace** · 11-22-2007, 09:08 PM

I put one of these in my one ton 71 Longhorn. It is behind a 350. I love it. I get 14 or 15 MPG on the highway at 65 MPH. It town I average 12.5 MPG. When hauling a heavy load I lock it out of OD so as to not trash the OD unit.

11-22-2007, 09:08 PM	#12
Don Brace Active Member Join Date: Nov 2002 Location: Clarks Grove MN Posts: 487	Re: 69 c-10 with 3 speed manual with OD? I put one of these in my one ton 71 Longhorn. It is behind a 350. I love it. I get 14 or 15 MPG on the highway at 65 MPH. It town I average 12.5 MPG. When hauling a heavy load I lock it out of OD so as to not trash the OD unit. __________________ Don Brace 55 Nomad 56 Nomad 58 Impalla Coupe 58 Bel-Aire 4D HT 61 Impala CVRT 409 4 SP 2- 71 Longhorns Always looking for old toy trains, Juke boxes Pin ball and game machines.