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Old 12-11-2017, 05:57 PM   #1 (permalink)
EcoModding Lurker
Join Date: Jun 2010
Location: Henry, VA
Posts: 28

The Little Car - '00 Chevrolet Metro
90 day: 86.06 mpg (US)

The Big Car - '94 Chevrolet Caprice Wagon
90 day: 44.9 mpg (US)
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FS: GM B/D body (Caprice, Roadmaster, Fleetwood) rear axle with custom 2.14:1 ratio

For sale is a rear axle from a 1993 Chevy Caprice sedan, with the 7.625” 10-bolt differential and 28-spline axles. It has been custom fitted with a rare 2.14:1 ratio gearset, and rare 1980’s GM 9.5” aluminum brake drums (weighing approximately 7 pounds each). The center bore and bolt holes on the drums were custom machined to fit the 5x5” Caprice hubs and studs. The ring and pinion were professionally installed, using new bearings and seals. The axle assembly came from a car with 98,000 miles, and about 6,000 miles have been put on the axle since the conversion. The axle shafts and bearings were not replaced, but are in good condition. The parking brake cables were replaced at the time of the conversion, and a brand-new brake hose will be included as well. In other words, the entire assembly comes ready to plug and play.

This axle assembly should fit any B or D body sedan made since 1977—Chevy Caprice, Buick Roadmaster, Cadillac Fleetwood, Oldsmobile, etc. It will also fit B-body station wagons—the 6,000 miles I logged were in a 1994 Caprice station wagon.

The 7.5” 2.14 ratio gearset is the highest (numerically lowest) that GM ever made, and is the ticket to the best possible highway mileage in these cars with an automatic transmission (or manual transmission, if you don’t use engine-off coasting). I was able to achieve 35 MPG on the highway using this axle in my station wagon, with no engine-off coasting.

I’m selling because I’ve discovered that with the use of engine-off coasting, gear ratio is not as important for maximum economy. However, EOC is not possible with an automatic, so if you don’t want to convert your B/D body vehicle to stick shift…this setup will reduce weight and get your RPMs down, yielding the best possible highway mileage.

Asking $500. I’m located in the greater Roanoke VA area, and I’d be willing to travel a reasonable distance to meet for the sale. I’d prefer not to ship, but I’ll consider it if you make arrangements. I do have a pallet I can strap it to, but I’ve never shipped anything this big before.

Please email for more information: funkhoss@gmail.com. Thanks for your interest!


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Last edited by funkhoss; 12-11-2017 at 06:08 PM..
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