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Re: [GMCnet] Power Drive [message #327269 is a reply to message #327243]

Mon, 18 December 2017 19:38

Carl S.

Messages: 4186
Registered: January 2009
Location: Tucson, AZ.

Karma:

Senior Member

Vadim,

I have a 3.70 final drive in my '75 26 footer and I normally drive between 62 and 65 MPH with no problems. Most 3/4 ton pickups of the same era had 4.10 rear end gears and most 1-Ton pickups were equipped with 4.56 gears, with essentially the same size tires as our GMCs.

The main difference between then and now is the overdrive transmissions on the newer cars. Prior to that, trucks, motorhomes, etc ran at higher RPMs than they do now. Of course, we were lucky to get much more than 100,000 miles out of those older vehicles, but that is only one of the reasons the newer ones last longer.

Carl Stouffer '75 ex Palm Beach Tucson, AZ. Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member

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[Message index]

		Power Drive By: NextGenGMC on Sat, 16 December 2017 22:20
		Re: Power Drive By: bwevers on Sat, 16 December 2017 22:52
		Re: [GMCnet] Power Drive By: James Hupy on Sat, 16 December 2017 23:26
		Re: [GMCnet] Power Drive By: jimk on Sun, 17 December 2017 00:05
		Re: [GMCnet] Power Drive By: NextGenGMC on Sun, 17 December 2017 01:02
		Re: [GMCnet] Power Drive By: johnd01 on Sun, 17 December 2017 03:29
		Re: Power Drive By: NextGenGMC on Sun, 17 December 2017 00:55
		Re: [GMCnet] Power Drive By: Ken Henderson on Sun, 17 December 2017 09:52
		Re: Power Drive By: Matt Colie on Sun, 17 December 2017 10:02
		Re: Power Drive By: NextGenGMC on Sun, 17 December 2017 20:44
		Re: [GMCnet] Power Drive By: James Hupy on Sun, 17 December 2017 20:48
		Re: [GMCnet] Power Drive By: Ken Henderson on Sun, 17 December 2017 20:56
		Re: [GMCnet] Power Drive By: Richard Denney on Sun, 17 December 2017 22:24
		Re: [GMCnet] Power Drive By: Kingsley Coach on Sun, 17 December 2017 23:14
		Re: [GMCnet] Power Drive By: James Hupy on Sun, 17 December 2017 23:22
		Re: [GMCnet] Power Drive By: Kingsley Coach on Sun, 17 December 2017 23:19
		Re: [GMCnet] Power Drive By: NextGenGMC on Mon, 18 December 2017 12:01
		Re: [GMCnet] Power Drive By: Kingsley Coach on Mon, 18 December 2017 15:26
		Re: [GMCnet] Power Drive By: USAussie on Sun, 17 December 2017 23:30
		Re: [GMCnet] Power Drive By: Carl S. on Mon, 18 December 2017 19:38
		Re: [GMCnet] Power Drive By: NextGenGMC on Mon, 18 December 2017 22:24
		Re: [GMCnet] Power Drive By: USAussie on Tue, 19 December 2017 00:15
		Re: [GMCnet] Power Drive By: Richard Denney on Tue, 19 December 2017 07:34
		Re: [GMCnet] Power Drive By: NextGenGMC on Tue, 19 December 2017 09:53
		Re: [GMCnet] Power Drive By: James Hupy on Tue, 19 December 2017 10:26
		Re: Power Drive By: bwevers on Tue, 19 December 2017 17:39
		Re: [GMCnet] Power Drive By: Ken Henderson on Tue, 19 December 2017 17:48

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