July 2002
-----------
Studebaker 6 Cylinder Crankshaft Forging Numbers

169.6 1943-54
#1547105
#1550774
#189986
#199966
#521525
#521526
#908292

170 1959-64
#1547105
#1550774
#189986
#199966
#521525
#521526
#908292

185.6 1955-58
#176254
#186433
#534231
#534251
#534254
#534521
#535377

194 1965-66
#3788424
#3820618N
#3820618

226 1947-53
#523135
#523774
230 1966-
#3788424 (Same # as Buick, Chevrolet & Pontiac)
#3820618N
#3820618

245 1949-59
#523168

Studebaker 8 Cylinder Crankshaft Forging Numbers

224 1955-56 
#533439

232 1951-54 
#526831
#526832
#536452
#530081

259 1955-1964 
#526831
#526832
#536452
#530081

282 1939-47 
#C116-LM (Same # as Packard)
#117111
#302811 (Same # as Packard)
#304852 (Same # as Packard)
#320428 (Same # as Packard)

283 1965-66
#3727449
#3734627 (Same # as Chevrolet & Pontiac)
#3815822 (Same # as Chevrolet & Pontiac)
#3876764 (Same # as Chevrolet)

289 1955-64
#1556444
#180590
#526956 (Same # as Packard)
#537424 (Same # as Packard)

304 1963-64
#15564444
#180590
#526956
#537424

352 1955-56
#HAWK (Same as Packard)
#300102(Same # as AMC, Hudson & Packard)
#3144388 (Same # as AMC, Hudson, Packard & Willys)


Taken from the 1979 Crankshaft Manual of the Automotive Engine
Rebuilders Ass.