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Hey all. been trying to figure out what trans and rear I have. Its a 1965, with a 352, and a 4 speed granny trans. the door says trans...N, Axle...A9. I think its a 435 trans but the rear end is a rear loader. ?? Tag says limited slip but I have nothing else.
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A9 = Dana 60.2 / 3.54-1 / Limited Slip / 3,300 lb. Rear Axle Capacity.
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So a rear loader dana 60 would be a factory install. Not a very knowledgeable guy about 3rd members so it took a while to See it was a dana. Dana rears are all rear loaders?
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The 9" rear axle was standard equipment, but was not available w/Limited Slip in F100's until mid-year 1968.
If purchasers specified Limited Slip, Ford usually installed the Dana 44, the Dana 60.2 was a heavier duty optional rear axle.
Last edited by NumberDummy; Oct 2, 2011 at 08:46 AM. Reason: I goofed, the OP has an F100 w/a Dana 60.2, not a Dana 60
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All Dana axles have an inspection cover. The original owner of your truck paid extra for Limited Slip, as it was an option.
You also lucked out w/the 3.54-1 ratio...almost as hard to find today as Jimmy Hoffa.
Most F250's from this era have 3.73's and 4.10's. Most peeps would love to have 3.54's, but...
You also lucked out w/the 3.54-1 ratio...almost as hard to find today as Jimmy Hoffa.
Most F250's from this era have 3.73's and 4.10's. Most peeps would love to have 3.54's, but...
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Your F100 has a Dana 60.2 rear axle / 3.54-1 / Limited Slip. It's not a Dana 60-was only installed in F250's.
I edited posts #2 & #5, corrected the info.
The speedo DRIVE gear part number (C3OZ-17285-C) I gave you in your other thread is correct.
The same 7T nylon gear was used in F100 and F250 2WD's with Dana 60.2 or Dana 60's with 3.54's and NP435's.
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60.2 I did not see that one. thank you for the heads up. so, did I still get lucky? Where do you think I could find this gear? Is this common for them to wipe out?
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Ford Parts Specialist
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A PO (previous owner) changed the DRIVE gear, could be because the trans was swapped, or the truck now has P-Metric radials, or PO couldn't find the correct 7T gear.
1964/72 Ford truck Parts Catalog sez: 1965 F100 / NP435 / Dana 60.2 / 3.54-1:
C3OZ-17285-C (replaced C2OZ-17285-A & D) .. 7T nylon DRIVE gear, ID'd YELLOW or PINK
C7SZ-17271-C .. 17T nylon GREEN DRIVEN gear with 7.00-15 tires.
C7VY-17271-A .. 19T nylon TAN DRIVEN gear with 7.75-15 or 8.15-15 tires.
--------------------------------------------------------------------------
DOTZ-17285-A .. 6T Nylon GREEN DRIVE Gear, 19T TAN DRIVEN Gear:
1970/71 F250 2WD or F350 / NP435 / Dana 60 / 4.10-1 / 6.50-16 tires.
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This is the problem when a truck is 40+ years old, parts get swapped around.
A PO (previous owner) changed the DRIVE gear, could be because the trans was swapped, or the truck now has P-Metric radials, or PO couldn't find the correct 7T gear.
1964/72 Ford truck Parts Catalog sez: 1965 F100 / NP435 / Dana 60.2 / 3.54-1:
C3OZ-17285-C (replaced C2OZ-17285 A & D) .. 7T nylon DRIVE gear, ID'd YELLOW or PINK
C7SZ-17271-C .. 17T nylon GREEN DRIVEN gear with 7.00-15 tires.
C7VY-17271-A .. 19T nylon TAN DRIVEN gear with 7.75-15 or 8-15-15 tires.
-------------------------------------------------------------------------
DOTZ-17285-A .. 6T Nylon GREEN DRIVE Gear, 19T TAN DRIVEN Gear:
1970/71 F250 2WD or F350 / NP435 / Dana 60 / 4.10-1 / 6.50-16 tires.
A PO (previous owner) changed the DRIVE gear, could be because the trans was swapped, or the truck now has P-Metric radials, or PO couldn't find the correct 7T gear.
1964/72 Ford truck Parts Catalog sez: 1965 F100 / NP435 / Dana 60.2 / 3.54-1:
C3OZ-17285-C (replaced C2OZ-17285 A & D) .. 7T nylon DRIVE gear, ID'd YELLOW or PINK
C7SZ-17271-C .. 17T nylon GREEN DRIVEN gear with 7.00-15 tires.
C7VY-17271-A .. 19T nylon TAN DRIVEN gear with 7.75-15 or 8-15-15 tires.
-------------------------------------------------------------------------
DOTZ-17285-A .. 6T Nylon GREEN DRIVE Gear, 19T TAN DRIVEN Gear:
1970/71 F250 2WD or F350 / NP435 / Dana 60 / 4.10-1 / 6.50-16 tires.
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That's the other problem. No Ford truck parts catalog lists radial tires until the mid 1970's and P Metric radials weren't introduced until the 1990's.
So, there is no way to get the exact combination of DRIVE/DRIVEN gears for the speedo to read exact.
Close is all you can get...because P-Metric radials are a different size (have a different profile) than the original bias ply tires.
So, there is no way to get the exact combination of DRIVE/DRIVEN gears for the speedo to read exact.
Close is all you can get...because P-Metric radials are a different size (have a different profile) than the original bias ply tires.
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Best I can find for a size comparison chart:
Tire Tech - Tire Size Conversion Chart
That puts the original tires between 29 to 30.5" in diameter, if I'm reading it correctly. Your 31s are said to be 30.5 by Tire Rack and others.
Do you have a GPS or can you borrow one to find out your exact speed?
Once you figure that out, and compare to your speedo reading, you can adjust the driven gear--probably by one tooth. IIRC one of ND's previous posts indicated approx. a 5-7 mph per tooth change in readings per tooth.
Tire Tech - Tire Size Conversion Chart
That puts the original tires between 29 to 30.5" in diameter, if I'm reading it correctly. Your 31s are said to be 30.5 by Tire Rack and others.
Do you have a GPS or can you borrow one to find out your exact speed?
Once you figure that out, and compare to your speedo reading, you can adjust the driven gear--probably by one tooth. IIRC one of ND's previous posts indicated approx. a 5-7 mph per tooth change in readings per tooth.
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Best I can find for a size comparison chart:
Tire Tech - Tire Size Conversion Chart
That puts the original tires between 29 to 30.5" in diameter, if I'm reading it correctly. Your 31s are said to be 30.5 by Tire Rack and others.
Do you have a GPS or can you borrow one to find out your exact speed?
Once you figure that out, and compare to your speedo reading, you can adjust the driven gear--probably by one tooth. IIRC one of ND's previous posts indicated approx. a 5-7 mph per tooth change in readings per tooth.
Tire Tech - Tire Size Conversion Chart
That puts the original tires between 29 to 30.5" in diameter, if I'm reading it correctly. Your 31s are said to be 30.5 by Tire Rack and others.
Do you have a GPS or can you borrow one to find out your exact speed?
Once you figure that out, and compare to your speedo reading, you can adjust the driven gear--probably by one tooth. IIRC one of ND's previous posts indicated approx. a 5-7 mph per tooth change in readings per tooth.
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