LATE 65 K CODE BLOCK CASTING NUMBERS

BIG AL_old · September 28, 2007 at 9:20 PM

I'm sure it has been discussed many times before, but in reviewing my 41st (1975) edition of the Hollander Auto-Truck Interchange I find that the block for the

8-289, special, late

#663 has a casting number of C50Z-6010C

8-289, exc.special late----#659 has a casting number of C5AZ-6015E

It also list the crankshaft for both as a #38 but list

(1) C3AZ6303F, EXC. 8-289 H/per

(2) C30Z5303B, 8-289 H/per

Koments or Kritizms Welcome.

jwc66k · September 29, 2007 at 8:43 AM

Those are all Ford service part numbers and are used as inventory reference only. Ford used a casting part number for the raw unmachined part which was cast on the item, a different part number for the machined part and it was not cast on the item, a different part number for a sub-assembly (when necessary) and a different part number for a complete assembly. To consolidate all the variations for service purposes, to replace a customers engine for example, a different part number was assigned. Those part numbers have (for the most part) a 'Z' in the fourth position of the part number, C5AZ, and that can be used to identify who in the Ford heirarchy has responsibility for the item. There are too many variations to list.

Jim

bobmannel · October 3, 2007 at 8:06 PM

The 1965 289 HiPo had a part number of C5OZ-6010-A, which was superseded by C5OZ-6010-B, then C5OZ-6010-C before becoming obsolete.

The standard 289 2V/4V had a part number of C5AZ-6010-C, which was superseded by C5AZ-6010-E.

The casting number on all 1965 289s (HiPo or non-HiPo) was C5AE-6015E.

The part numbers for the crankshaft were C30Z-6303-B for the HiPo and C3AZ-6303-F for the standard 289 2V/4V. Both cranks were marked 1M.

All 289 HiPo cranks have a polished section on the rear counterweight. According to Ford sources in the plant at the time, 100% of the 289 HiPo cranks were inspected. The inspector had photographs of what the grain size should look like. He compared the 289 HiPo rear counterweight polished area under a microscope with the photos. If the grain patterns met the criteria of the photos, the crank passed the inspection. Otherwise, it was recycled. What exactly was the criteria, I don't know, but, I would guess that there was at least a normal (what to expect) and a minimum (reject) grain size pattern. Maybe I will learn more in time.

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