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02-04-2008, 10:37 PM
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#1 |
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Registered User
 Join Date: Jun 2002
Location: new market, alabama
Posts: 1,330
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Rear End ?????????
What Is The Best Rear End For Gas Mileage Using A 350\700r4 For Our Trucks ? Thanks,buddy
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02-04-2008, 11:22 PM
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#2 |
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laying low
Join Date: Mar 2001
Location: Searcy, Ark. USA
Posts: 13,273
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Re: Rear End ?????????
There are many ideas on this topic. Tire diameter in the 29 to 30 inch range, and OD trans work well with 3.42 and 3.73 gear ratio. Of course how you use the truck also has a large effect on mileage and gear choice as in mostly highway, flat land, mostly towing with some hills to climb, etc. Your engine and how it's tuned makes a difference too. Carb'd or fuel injected? Lot's to consider.
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Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross |
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02-05-2008, 01:07 AM
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#3 |
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Registered User
Join Date: Oct 2005
Location: Overland Park, Ks.
Posts: 5,218
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Re: Rear End ?????????
Boog is right. It,s all a combination. It mainly depends on engine size. I run a 70 stepside, 350 engine, 29 dia. tires with 3.08 gears. It works good but you certainly wouldn,t want anything higher then that.
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