68 Ford F600
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Joined: May 2008
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From: Royal City, Wa 99357
How do you know it's a 352 engine?
Did you notice 352 cast into the block, drivers side front?
All the FE 352/360/390 blocks are cast as 352's, only when they are finished can they be something else...so, you could have a 360 or 390 engine.
Measure the stroke: 352/360 = 3.50" / 390 = 3.78"
Look at the flywheel, they all are stamped with flywheel ID numbers on them.
Post what you find. **
352/360's use an 11" clutch on a 12 3/8" diameter bolt circle.
390's use an 11 1/2" clutch on a 12 7/8" diameter bolt circle.
330 M/D's use a 12" clutch on a 12 7/8" bolt circle or a 13" clutch on a 14 1/8" diameter bolt circle.
** I will be away from the 10th to the 20th of May, so FTE member Air Harley is the only other person (that I know of here) that has the same parts catalog, is qualfied to use it, and can ID the flywheel.
Did you notice 352 cast into the block, drivers side front?
All the FE 352/360/390 blocks are cast as 352's, only when they are finished can they be something else...so, you could have a 360 or 390 engine.
Measure the stroke: 352/360 = 3.50" / 390 = 3.78"
Look at the flywheel, they all are stamped with flywheel ID numbers on them.
Post what you find. **
352/360's use an 11" clutch on a 12 3/8" diameter bolt circle.
390's use an 11 1/2" clutch on a 12 7/8" diameter bolt circle.
330 M/D's use a 12" clutch on a 12 7/8" bolt circle or a 13" clutch on a 14 1/8" diameter bolt circle.
** I will be away from the 10th to the 20th of May, so FTE member Air Harley is the only other person (that I know of here) that has the same parts catalog, is qualfied to use it, and can ID the flywheel.
As for the numbers on the differential: on the top directly just a little behind where the driveline enters are stamped 50341 and 631186. I didn't find any numbers on the axel housing. On the 2 speed top is canada: 2807 510 002, Eaton 40635. I don't know if that gets anywhere to determine what it actually is.
Post Fiend
Joined: Feb 2007
Posts: 7,191
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From: Blairsville,Ga
I read many of your posts, so I know you know are sharp. 
The fact of the matter is, Ford lists two Eaton 2 speed axles for 1968/72 F600's, 15M and 17M (models 13802 and 15201), a third & fourth for C Series Tilt Cabs and the N Series only, model numbers: 16802-3 / 16220-1. Different parts list for these two: #101.
Then take this into consideration: Domestic Special Order.
!
The fact of the matter is, Ford lists two Eaton 2 speed axles for 1968/72 F600's, 15M and 17M (models 13802 and 15201), a third & fourth for C Series Tilt Cabs and the N Series only, model numbers: 16802-3 / 16220-1. Different parts list for these two: #101.
Then take this into consideration: Domestic Special Order.
!
16220 was also installed in f-600 and f-700
I did take DSO into consideration as all our trucks were ordered not bought from dealer stock
if I had my library here I have all the books on '68 medium duty trucks,even the dealer propagana sheets and buildsheets
we bought 4 new '68 f-600s
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 785
From: Simi Valley, CA
We guessed the engine was a 352 by, when we got a thermostat, it took a 352, 1965, and on the distributor tag was 1965, C5A. Haven't measured the bore or stroke, really don't need to pull the engine apart. Where the idea to grind the weight off the flywheel to balance things came from is the existing flywheel which according to the clutch size probably came of a 330 was compaired to a 390's flywheel and there is a large weight block on the 330 flywheel that isn't on the 390 flywheel. We figured if the weight was removed then the flywheel would be balanced correctly for the motor.
As for the numbers on the differential: on the top directly just a little behind where the driveline enters are stamped 50341 and 631186. I didn't find any numbers on the axel housing. On the 2 speed top is canada: 2807 510 002, Eaton 40635. I don't know if that gets anywhere to determine what it actually is.
As for the numbers on the differential: on the top directly just a little behind where the driveline enters are stamped 50341 and 631186. I didn't find any numbers on the axel housing. On the 2 speed top is canada: 2807 510 002, Eaton 40635. I don't know if that gets anywhere to determine what it actually is.
Later flange diameter is 2 1/8."
C5A is a car dizzy ID number, but there's more to it like: C5AF-12127-A / B / AD / AE.
1965 cars came with 352 or 390 engines.
Look on the exhaust manifold for ID numbers, cars with 352/390's used different exhaust manifold than trucks with 352/360/390's did.
The FT (330/361/391) engines used Rams Horn manifolds.
None of this proves anything, parts can be swapped around, so who knows what the engine is.
I couldn't find a thing on those axle numbers you posted.
Look here: Stamped into the right back side of the axle tube just to the right of the inspection cover, there are two numbers.
Top number refers to the housing number / Bottom number refers to the series ID number.
I won't be here to decode them, so mebbe Ray can help you.
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Erich.Vongeist
1961 - 1966 F-100 & Larger F-Series Trucks
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