The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Are you really concerned with gas milage on your truck??

**va72longhorn** · 10-11-2021, 04:58 AM

I may be when I put an overdrive between the tranny and the 4:56 rear, in my C30, but until then, naaaaaa. ( and then it’ll just be curiosity) I‘m just more concerned about lowering the rpm’s than I am increasing the gas mileage.

10-11-2021, 04:58 AM	#29
va72longhorn Senior Member Join Date: Dec 2009 Location: Culpeper, VA Posts: 431	Re: Are you really concerned with gas milage on your truck?? I may be when I put an overdrive between the tranny and the 4:56 rear, in my C30, but until then, naaaaaa. ( and then it’ll just be curiosity) I‘m just more concerned about lowering the rpm’s than I am increasing the gas mileage.