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#1
12-02-13, 02:58
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Brakes all refurbished, cab all bolted down, added a three inch body lift. Bought a set of 42" SuperSwamper tires.
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Rob T. 
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#2
12-02-13, 19:26
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You are on the same track as me. I just haven't gotten started yet. Can't wait to see pics.
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#3
13-02-13, 10:56
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More
Quote:
Dont be shy...
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Pax Vobiscum.......may you eat three meals a day & have regular bowel movements.
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#4
16-02-13, 16:32
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New and old tires, does any one know if the stock split rims are 16" or 16.5"?
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Rob T.
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#5
16-02-13, 16:33
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And what is the gear ratio of these old Ford axles?
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Rob T.
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#6
17-02-13, 06:31
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Quote:
Looking forward to more pics as this project progresses, and hopefully some YouTube video when it's finished, putting it through its paces off-road. Should make for spectacular viewing with 350 Chevvy and monster tyres! BTW your rear crossmember damage is typical Rob, and I notice you're missing the fishplates as well. These are essential for frame strength and stability, so you'll need to find a pair or fabricate some, along with a new rear crossmember. Others have faced the same task, you'll find a discussion of the subject on this thread, starting about halfway down the page: http://www.mapleleafup.net/forums/sh...=15575&page=17 Anyway good luck with the build, it must be very liberating to throw away the book!
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One of the original Australian CMP hunters.
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#7
17-02-13, 14:29
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You are right....
Just to expand a bit on other replies - F15A came with 16" wheels and 6/39 toothed diff (6.5:1 ratio), while the 3 tonner Fords (F60S and F60L) came with 20" wheels and 6/43 toothed diff (7.16:1 ratio). Ditto for Chev series - as Bob says the axles were designed to be interchangeable.
The MB C2 shows a ratio of 6.5 and the GM Major Assembly manual shows ratio as 6:39......... and 6:39 is what is usually stamped on the outside of the gear cluster and I remember now that this was previously discussed on the MLU at the "Tooth" count on the ring gear. Bob
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Bob Carriere....B.T.B C15a Cab 11 Hammond, Ontario Canada
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#8
17-02-13, 17:01
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Quote:
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One of the original Australian CMP hunters.
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#9
16-02-13, 20:29
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Quote:
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Robert Pearce.
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#10
17-02-13, 00:00
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Gear Ratio...
On the C 15a the ratio is given as 6:39 ....... not sure if it is the same for Ford axles but should be darn close to being the same as some Fords ran from the factory with GM axles front and Ford axles rear.
The official size of the original rims is 16 inches, I would be hesitant to run modern 16.5 tires as the tire bead of modern tires and the original rim design are not intended for that. With a more powerful engine you may have enough torque to spin the rim inside the tire and watch the tube stem shear off......... 16 inch bar tread military tires intended for these rims will NOT drop on the original rims they are a nice tight fit ........ However, I bow to the practical experience of others who may have tried it and survived. Bob
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Bob Carriere....B.T.B C15a Cab 11 Hammond, Ontario Canada Last edited by Bob Carriere; 17-02-13 at 00:07.
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#11
17-02-13, 05:09
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My MB-C1 and MB-F1 give the 15A diff ratio as 6.5 to 1.
Bob I had worried about rim spin when the tires went on so easily but I did some serious four wheeling with the spray rig and have had no trouble so far. I run the tires at 50 to 55 psi. 
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Robert Pearce.
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