New to the forums here but I figured this would be the best place to get some answers.
I have a 1964 M-100 4x4 that I picked up in the fall and the more I look at it and work on it the more questions I have.

The Serial Number tag says the wheelbase is 128 but when I measure center to center its 121. It also has 8 bolt axels and all ive seen from others is 5 bolt so I thought the drivetrain might have been swapped out but underneath everything is as if it came from the factory that way.

Any help or information would be greatly appreciated.

 

Does the VIN on the door tag match the VINs on the frame and the ownership document?

 

The serial number on the door tag matches the numbers in the engine bay and on all documents. Where might the numbers be on the frame?

 

128" wheelbase (actually 128.8" referred to as 129):

1964/66 F100/250 2WD & 1966 F100 4WD. These trucks use the same Styleside beds that were introduced in 1964.

120" wheelbase: 1961/65 F100/250 4WD & 1966 F250 4WD. These trucks use the 1957/60 Styleside (wrong) beds.

F100 2WD/4WD have 5 lug wheels on a 5.50" bolt circle. F250 2WD/4WD have 8 lug wheels on a 6.50" bolt circle.

Post the VIN

 

The vin is 5991028L-147873A

 

5 = I-6 engine.

99 = Styleside Pickup.

10 = 100 Series.

28 = 128.8" Wheelbase.

L = Left Hand Drive.

147873 = Numerical Sequence of Assembly.

A = 3,600-5,600 lbs. Gross Vehicle Weight Rating range.

 

I've done some of my own decoding on the numbers and came up with the same. But what is on the truck doesn't quite match up with what the numbers read out to be.

It has a 292 V8 instead of the v6
The wheel base is 121 instead of 128

 

1964 F100 would have a straight (inline) 6. No F100 had a V6 until 1982.

 

My bad made a typo. Either way it has a 292 V8 not the straight 6

 

Thru 1965: If the first digit of the (Canadian) VIN was either 1 or 4 = V8.

But it's 5 = I-6.