'64 R2 CRANKSHAFT NUMBER

[Rick Allen]

Took the crankshaft out of my '64 R2 engine as part of rebuild but was surprised to see the number was different than what the book called for; the book calls for a 1556929 for the R2 Avanti 289 but the number on my crank is 1556444 as best as I can make out, the 2nd last number looks like a poorly stamped "4".  If anyone knows these numbers and can tell me if the crank I have is not correct for the engine, please let me know; I am reasonably sure the engine was never apart as far as I can tell,,,

Edited February 23, 2023 by Rick Allen
Correct Typo

[Dwight FitzSimons]

The part number for the R1/R2 (& 289) crankshaft is 1556929.  What you are looking at is the forging number, which is not the same thing as a part number.   (On rare occasions the two might be the same on some forgings or castings).

--Dwight

Edited February 23, 2023 by Dwight FitzSimons

[Rick Allen]

9 minutes ago, Dwight FitzSimons said:

The part number for the R1/R2 (& 289) crankshaft is 1556929.  What you are looking at is the forging number, which is not the same thing as a part number.   (On rare occasions the two might be the same on some forgings or castings).

--Dwight

Thank you, that's a relief, I look again for the part #,,,

[Rick Allen]

10 minutes ago, Rick Allen said:

Thank you, that's a relief, I look again for the part #,,,

The forge number is very visible to find but where is the part number located on the crankshaft?,,,

[Avanti1963!]

That forging number is correct for your car.

[Dwight FitzSimons]

1 hour ago, Rick Allen said:

The forge number is very visible to find but where is the part number located on the crankshaft?,,,

The part number would have originally been on a tag attached to the crankshaft, but not stamped or forged on the crankshaft itself.  Those familiar with how foundries are operated might explain this better than I.

--Dwight

[64studeavanti]

FWIW, any Studebaker 289 long nose crankshaft has the same forging and part numbers.