Dogwickerbasket: Mopar 8 3/4 Rear End Identification

8 34 CASTING NUMBERS 1820657 AKA 657 The 657 is as equally weak as the 741 described below but nowhere near as common. One axle measures between 30 116 to 30 18 end of spline to outside of wheel flange.

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This Video is with the 3rd member already removed.

Mopar 8 3/4 rear end identification. It is a 1 38 pinion shaft unit like the 741 and was discontinued in 1964. A rubber snap-in fill plugThis began in 1977. The topics covered are as follows.

BuickOldsPontiac axles are typically retained with bearings. It is a banjo-type Hotchkiss axle ie. One axle measures 30 inches on the end of spline to out side of wheel flange.

How to change out 3rd member. The first two are supposed to be as strong as a Ford 9 inch or stronger handles up to 500 HP. The axle has an 8-34 diameter ring gear.

430 62-70 8 34 B Body. There is also a metal tag tells the gear ratio in the axle. That last number is what Im not positive on in the X 11 2.

Many topics are covered and the text is compiled into one long document in order to speed locating the information you need. Moser Engineering produces the only fabricated housing made to work with a MOPAR center section The MO875. The last line in the Notes section it states casting.

440 70-74 8 34. Also personal opinion the 741 case has gotten a very unfair and untrue rep as the weakest casting. 8 34 Axle Guide The following conglomeration of information should help a person be able to locate identify and install an 8 34 Chrysler rear axle in their Mopar product.

Mopar Rear Ends Differentials Etc. However road debris dirt grime and general age can obscure these numbers. Identified by casting number number of cover bolts.

There are 3 versions of the MOPAR 8 34 rear end Casting numbers 742 489 and 741. 4446 67-72 8 34 A Body. The Chrysler 8-34 rear axle assembly was introduced in 1957.

Banjo axles have one-piece housing and a removable center section that contains the ring and pinion. 65 to 69 C body or 70 to 74 E body or 65 to 70 A100. In case you do some scrounging heres a casting number and ID cheat sheet.

Mopar fanaticsyour wait for the strongest 8 34 rear end is finally over. This was the year when Chrysler dropped the tapered axle shafts that had the brake assembly attached to the axle with a keyway and large nut. Chrysler Corporations 875 rear axle assembly first appeared in 1957.

The differential is contained in a removable carrier assembly. Mopar had a rear end before the 8 34 that looked VERY similar but is not a 8 34I think thats what you might have. Some of those are not available for an 8 34 and they arent cheap generally if they are available.

10 bolt cover round but with flattenedtop and bottom. The 741 isnt nearly as strong. 8 14 B C Body.

1828488 is 8-14 1820657 is 8-34 Also when confirming the casting numbers on the rear carrier section the 8-14 embossed number is located between the two ribs on the drivers side. Download service and parts manuals here. The only splines that were different in the 8 34 were the pinion splines where the yoke mounts.

Secondly they are more economical because they are much lighter than the Mopar 8-34-inch differentials though that weight savings did not sacrifice a lot. 90-00 Dakota 72-96 12-ton 2WD and 4WD Dodge fullsize 92. Obviously the ring gear is 875 inches in diameter.

Although it might not be as strong as a Sure-Grip 8-34 rear it does have its own advantages. From Rigby ID USA. This gear which is turned by the pinion gear changes the direction of the power being transmitted to it.

Is that the usual picture is of a Jeep 8 14 rear. This center section is bolted into the housing like a Ford 9 rear. Ten bolts retain the carrier and the pinion spline can be either 10-spline or 29-spline.

All 8 34 rear ends used the same 30 spline axle from 57-74. Do a search theres more info available on upsides and downsides of each version. Identification of these rear ends is pretty straightforward.

April 06 2009 053103 PM. It may be X 11 8 but based on the yellow 242 above it that number sure looks like a. OE axle bearings.

It is a banjo-type Hotchkiss axle. It is a banjo-type Hotchkiss axle ie. Its an 8 14 rear.

The 875 8 34 rear end LOADS FROM THE FRONT and IS THE ONLY REAR END THAT DOESNT HAVE A REAR COVER. Yep there are two common types of mopar 8 34 sure grip clutch and cone yours is a cone and about five other aftermarket types of lsd. 12 bolt cover octagonal shape.

First of all they are reasonably easy to locate because they were used in a wide range of original applications for almost 40 years. The pinion gear is turned by the driveshaft. Chrysler 8-14 This semifloating rear axle features a 10-bolt cover and appeared in various Dodge and Jeep vehicles.

Usually it has the 489 case and the date code is cast into the side of the case. 8 14 B Body. Disassembly is just backwards of this video.

There are three basic types available distinguished by. Chevrolet or C type rear ends typically have C-clips retaining the axles. A B E Body cars The MO875 is made to not only withstand the demands of high horsepower applications but also finish off the back.

You can see the 91 for a. Reply 8 on. 8 14 F Body.

The Chrysler 8-34 rear axle assembly was introduced in 1957. Mopar has produced two types of rear axles in their history Banjo and Carrier Tube. If so to me IMOpretty much useless May 6 2015 5.

Weve put together this visual guide to help you hone your rear axle spotting skills. Designed specifically for early MOPAR vehicles including. This axle is the one and only 8 ¾ unit.

The differential is contained in a removable carrier assembly which is extracted from the axle housing toward the front of the car. MyMopar - Mopar Forums Information - MyMopar ToolsReference. The measurement refers to the 8-34 diameter ring gear.

Both axles look identical. Another sure genuine-Mopar axle ID tipoff. The problem with google searches etc.

Its worth noting that rear axles can sometimes be positively identified by a casting number and date stamped on the differential cover or axle tube. There are only six identifying part numbers relating to a true 8 34-inch rear. Wheres the 8-34 embossed number was located as expected on the lower edge of the rear carrier which is also the same location.

There were 10 and 29 spline pinions the 742 used only the 10 spline while the 741 and 489 could have either. In an 8 ¾ rear axle the gears are all contained in a center unit unlike the Dana 60 unit.

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