View Full Version : What size is my engine

09-07-2010, 06:42 PM
I have a 1956 Studebaker Power Hawk and I'm not sure what engine is in it. The number on the front/center of the engine is 1554641 and a number on the right side of the engine is 535976. Can anyone tell from this info if it is a 259 or a 289?

09-07-2010, 06:55 PM
I'll guess and say 259.

09-07-2010, 06:57 PM
oops! but not with those #s,look on the flat surface of the driver front corner of the block. V 259 P 289

41 Frank
09-07-2010, 07:06 PM
Power Hawks in the U.S. would have been built with a 259

Dwain G.
09-08-2010, 10:12 AM
1554641 is the casting number for the late engine blocks, used from mid-'62 through '64. It has a spin-on oil filter located at the lower right side of the block.
535976 is the casting number for cylinder heads used from about 1955 to '61. They may be the original heads on the car.
The engine serial number is [U]stamped[U] and would be found in a smooth area at the left front corner of the block, just across from the casting number.

09-08-2010, 05:49 PM
Thanks for the help.

09-08-2010, 07:31 PM
From a previous post:


Hey, maybe it will look like this!