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Old 02-29-2004, 07:30 PM
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ford 8 inch

i got a daily driver/racing 67 rambler with a ford 302 and a c-6 tranny. it weighs out at 2850 lbs with me in it. I have probably 300 horse and am still going to add a few more things( new heads, 150 shot of nitrous, roller rockers, stroke it to a 347, etc). Do you think an 8 inch would hold up if i rebuilt it. And what gears do you think i should go with. i thought 4.11's would be cool, since i don't drive it on the freeway much at all.

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Old 02-29-2004, 09:13 PM
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I put close to 400HP with a 351W in a 68 Galaxie and it never complained, tire traction is more a limitation. If you run big slicks you could have problems if you are going to abuse it, otherwise don'y worry about it they are stronger than a 10 bolt Chevy.

We are talking about the 8 inch Ford removable pumpkin rear axle right?
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Old 03-01-2004, 02:22 AM
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yeah, the ford 8 inch rearend. i'm pulling one out of a 76 comet for about 50 or 100 bucks, i don't have to shorten the thing at all. I just have to make new spring perches, then i'm going to dump a few hundred bucks into new gears, posi unit and all that good stuff. But i don't want to go to all that effort if the rearend won't hold up to what i'm going to give it.
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Old 03-01-2004, 08:59 AM
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The Hotchkiss Ford 8" is a very good rear end. For a car that weighs less than 3000# and has less than 300hp, it should last forever. Main weakness is the snout of the pinion shaft housing. If you have a lot of wheel hop it tends to break. Just be sure to have adequate traction control and it should take all the abuse you can throw at it. 4:11s would be fine for a strip/Sonic Drive-In car. If it were a daily driver, I would set up a pumpkin with 3:54s. that way you could drop in the 4:11s or even lower for race day & go back to the 3:54s for the rest of the week. With a little practice, you can get your switch time to way less than 1/2hr. That's one of the beauties of the Hotchkiss!
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Old 03-01-2004, 11:38 AM
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If I remember right, there is a 3.80 ratio available for the ford 8", this would be an excellent choice for an all-around gear ratio, then you could get some short slicks (or drag-radials) for the track!! Just don't get to carried away and do anything silly with that sweet old Rambler, Understand!!
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Old 03-01-2004, 01:56 PM
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how do you tell if it's a hotchkiss rearend? And i already have 300 horse, and am going to have more when i put in the ford rearend. I plan to do a couple more things to it when the rest of the car will hold up. And speaking of the car holding up, do you guys think that a nova 2 roll cage would fit in pretty good or do you think i would have to have one custom made. They're almost the same body style and size.
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Old 03-01-2004, 02:40 PM
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Hotchkiss is the general style of rear end that has the removable third member. The type used by GM for the past several decades is referred to as Salisbury and is characterized by the third member and axle housings being assembled as a single piece.

Hot Rod Magazine on rear ends.
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Old 03-01-2004, 03:09 PM
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i actually don't even know for sure if it is an 8 inch or not, but the rear end is coming out of a 76 comet, what do you guys think it is
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Old 03-01-2004, 03:17 PM
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8" or 9"?
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Old 03-03-2004, 02:08 PM
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it's an 8 inch. I pulled it out (got it for 100 bucks), i was told that if you put a socket and extension on one of the bottom bolts on the cover nd it goes on crooked, it's a nine inch. If it goes on strait, then it's an eight. I'm still going to clean it up and check the numbers to verify, that way i don't by parts for an 8 inch and they don't fit. thanx for the help though.
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Old 03-05-2004, 09:10 PM
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It is in fact an eight inch as no other rear was offered under 76 Comets. The factory offered the option of 2.79, 3.00, or 3.25 ratios.
Eights are pretty tough until you pass about 400 horsepower and/or start using actual slicks at the racetrack. One will put up with a lot of abuse up to around those points.
I have a Comet/maverick 8" under my 67 Mustang and am quite happy with it, more so after I swapped in the traction-loc chunk from a Ranchero. The Comet rear is a bit narrower than the Mustang rear and has allowed me to run 295/50/15 rear tires.
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