I remember reading an article in a Street Machine or Street Heat or Performance Buildups mag about a Melbourne or Victorian diff specialist that beefs up Borg Warners. Can't remember if cost was mentioned. Check around the diff specialists and they will know who it is.
The main thrust of the article was that a 9" is much heavier (tell me about it) and of course provided the BW doesn't break your 400 metre times should be less if your carting less weight. Also, it costs to have the 9" adapted to fit with brackets to be welded on to the housing for sway bars etc.
Ive done it but the car is definately harder to control in the wet once the rear breaks loose with the extra weight back there.
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The cop said "Do you know why I pulled you over". I said " Well, that all depends on how long you have been following me!"
An 8 inch is not a BW diff. Its very close to the 9 inch actually. The main difference is really the size of the supporting housings. I dont think they made an original LSD with the 8" housing. The gear strength is the same as a 9" as is the basic axle strength but they only have 28 spline I think.
The BW on the other hand like from an XD ute can be built to hold 500 plus horses according to my trans and diff guy for a lot less than a rebuilt 9" disc LSD. I would have used one myself but I needed the weight.
Unless you need the weight use a BW LSD disc rear. Theyre a great rear for the money.
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Well done SA pollies (for once). Hoon laws are long overdue to protect car enthusiasts against idiot drivers.
tonyk,
So what did these 8" diffs come in. I have not heard about them.
While we are on the subject, are all BW LSD's the same e.g. are ute ones any stronger?
Also, any idea on the cost of a ratio change for BW LSD.
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The cop said "Do you know why I pulled you over". I said " Well, that all depends on how long you have been following me!"
Originally posted by shaynet tonyk,
So what did these 8" diffs come in. I have not heard about them.
While we are on the subject, are all BW LSD's the same e.g. are ute ones any stronger?
Also, any idea on the cost of a ratio change for BW LSD.
8" are basically a baby 9" as stated. BW LSD can be 25spline, 28spline, and then two or four pin. Beyond that, 2.77 ratio have a different offset to all the lower gears, and the hemisphere is therefore not interchangeable. Cost would be $770 retail for brand new LSD, then gears, etc. Someone on here recently tried to say a hemisphere from Ford is $550 retail, but that is crap. Retail at Ford is $1386, I checked last week.
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If you're not driving a manual you're really just steering.
Early mustangs such as mine came with the 8" diff, which I always assumed to be the 8 3.4"(8.8). Looking at the website there, they look very much the same and it shows us how to pick the difference between them. There was an option for an LSD. Here is a list of ratios for a 66 model
2.83:1
3.00:1
3.20:1
3.50:1
2.80:1
3.89:1
4.11:1
I am pretty sure all early mustangs with the exception of Shelby's came with 8", Shelby were 9". As we can see the 8" offered quiet a few different ratios.
The benefits of a removable carrier (8 or 9) are chiefly the ability to change ratios by swapping centres or "pumpkins" as the US guys often call them, and (arguably) increased stability at launch due to a heavier rotating mass (gyroscopic effect).
Places such as Summit Racing sell gearsets for each of these, as well as the 8.8s. Trac-Loc centres, Detroit Lockers are available new; only the Trac-Locs are really suited for everyday use.
As to the BW diffs; when properly set up (too rare!), they are able to handle pretty tremendous power. Much less live weight, too. They don't have the cachet of a 9" which is fine by me - another reason to sleep easier at night.
To the original poster, Ben: Get onto some of the US sites like StangNet and post "Wanted" ads. Check out total freight costs beforehand... It may be cheaper or equal to ship a whole diff. Look for a whole diff or a fully kitted centre in carrier, with gears. People have a propensity to part them on ebay for max profits - very frustrating when you want the lot. And be cynical about any parts condition stated without good proof - better than being broken-hearted.
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