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Joined: Sep 2006
Posts: 206
Backyard Mechanic
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OP
Backyard Mechanic
Joined: Sep 2006
Posts: 206 |
I have a question on engine numbers. I have two 1951 engines; I say 1951 only because they came from fairly original 1951 vehicles, recognizing that after 60 years, who knows what's original.
The first is a 235 ci engine from a PG vehicle. It has a block casting date of October, 1950, and a stamped number of HAD1239544. The "parts book" doesn't list a "HAD" prefix but a "HDA" prefix.
The second is a 216 ci with a stamped number of JAM1070225. Again, the "parts books" doesn't list a "JAM" prefix but does list a "JMA" prefix.
Is the parts book being taken too literally or is it really all that definitive? Is it likely that a October, 1950, cast block was originally installed in a 1951 vehicle? The 1951 cars were well into production when this engine was assembled.
Just a point that was made to me by another Chevy owner that I don't have an answer for.
Thanks for any clarification,
52Conv
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Joined: Jan 2002
Posts: 30,700 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,700 Likes: 141 |
HAD is a 1950 Power Glide car engine JAM is a 1951 passenger car 216 engine.
Oct 1950 would still be a 1950 engine as 1950 production ended on 11-11-1950 1951 production began on 11-20-50
Gene Schneider
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