Pumpkin rearend
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Pumpkin rearend
Guys, I have just purchased a parts 54 effie. The truck has sometype of pontiac / olds motor / trans in it. After further inspection I seen the rearend was a front chunked rear. My first thought was a 9 but after looking at the rear cover and researching numerous articles that gm and dodge actually made a rearend with front chunked that looked like a 9. I have yet been able to get the truck to the shop out of the field yet to run numbers but I did put some roller wheels on it yesterday and the rearend took 4 1/2 " ford car steelies. I tried a gm wheel first but it didn't fit. The weird thing is that the rear cover is completely round and smooth and doesn't have a drian plug. Has anyone seen an older 9 out of a car that fits this descripiton?
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From: OK
It could be a Mopar 8 3/4" rear end. They are supposed to be very strong rear ends. It could also be a 9 inch. I have one from a 58 F-100 that is smooth on the back, except for the flat strip in the middle with a drain plug on the bottom. Ford 8 inch is also possible too. Do you have any pics of it?
hotrod48
hotrod48
Last edited by hotrod48; Mar 19, 2006 at 09:43 PM.
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From: Brentwood,CA
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Gas Hog, It does not look like that 9. The rear cover is completely round and smooth like 1/2 of a bowling ball. I did notice that the oringinal perches were moved inward to fit under the effies springs. After the showers and storms pass through I will get some pics and the numbers for ya'lls help. Thanks, guys.
More Turbo
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From: Peoria, IL (more or less)
If it's perfectly round, & the housing dome diameter is bigger than a 9" Ford, like 11"-12", it is most likely a '57-'64 Buick/Olds/Pontiac axle. They were fairly strong for the time & used a lot for drag racing in the '60s. It is now very difficult to get gears for them, although bearings,etc. are still available. On the positive side, if you find one in a salvage yard, they are usually still in good shape. It is NOT the same as that vintage of Chevy axle, nor does it share anything with the later GM axles. It's the only Hotchkiss-type GM axle that I am aware of (other than the old Chevy).
Last edited by Homespun91; Mar 20, 2006 at 09:46 PM. Reason: sp
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From: OK
Originally Posted by Homespun91
If it's perfectly round, & the housing dome diameter is bigger than a 9" Ford, like 11"-12", it is most likely a '57-'64 Buick/Olds/Pontiac axle. They were fairly strong for the time & used a lot for drag racing in the '60s. It is now very difficult to get gears for them, although bearings,etc. are still available. On the positive side, if you find one in a salvage yard, they are usually still in good shape.
hotrod48
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More Turbo
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From: Peoria, IL (more or less)
Most are the larger GM pattern, but at least some are 4 1/2"...don't ask me why...or how I know... found out the hard way, involving a friend's '64 Bonneville, an Interstate roadside, an Olds boneyard center section, different axle/spider spline counts, different bolt patterns, another Olds center section, & a P.O.'d Illinois State Trooper.
Option B is that someone redrilled the flanges to make it the smaller pattern.
Option C is that it's the Mopar, which used to be a fairly common swap.
Its housing diameter is pretty close to a Ford 9".
Option B is that someone redrilled the flanges to make it the smaller pattern.
Option C is that it's the Mopar, which used to be a fairly common swap.
Its housing diameter is pretty close to a Ford 9".
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Its is still raining and the hood on the effie is stuck due to hinges. But the seller assured me it is some type of olds/pontiac motor in the truck. I will get the numbers hopefully this weekend when I scrounge up some tires and drunk friends to help wheel her to shop. My god, my is going to end up part ford, chevy, dodge, and olds/pontiac. I guess i need to find some caddy and buick parts next.
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Hot Rod48 that is exactly what the rear looks like. The axle tubes are tapered near the ends and the stock Ford perches are all being used. You are sure that is a Mopar? Makes sense with the 4 1/2 bolt center. I will get the numbers and some pics. Thanks.
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From: OK
I'm pretty sure it is a Mopar. It came from a Mopar site. http://www.sweptline.com/tech/drainplug.html You say the axle tubes are tapered near the ends? All of the 8 3/4" Mopar housing pics I find, the axle tubes are straight. Makes me wonder now. Casting numbers and a pic or two would be the best bet now. It could be anything. 
hotrod48
hotrod48
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From: Littleton, New Hampshire
I'm using a newer Mopar rear end in my 48 F-3 out of an 87 Chrysler 5th Avenue. The width is perfect at 61.5 inches from center to center of the tread and it has the 5 on 4.5 bolt pattern which makes wheel selection easier....AND it was FREE.
Vern
Vern
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Sorry for the delay guys, but I was able to get the rearend out of the truck this weekend and get a good look at it away from the ant beds, snakes and other critters. The rearend has a brace that covers the front of the chunk over the yoke shaft. There is a rubber bumper on this brace that has a mopar symbol and the word mopar on it. Does anyone have any info on these rearends or any sites to get any info. I appreciate the help.