#11

10-27-2025, 05:40 PM

PAUL K

Ultimate Warrior

Join Date: Feb 2004

Location: Sugar Grove IL USA

Posts: 7,435

Quote:

Originally Posted by steve25

Just to keep all our Ducks in row here and to reinforce what Paul had in an earlier post the casting number is 197, not 191.
The full part number of the head was 481197.

Also let's not forget about what Paul said about date codes. Early production 197 heads didn't have them. It's highly unlikely the SDRA heads that were cancelled in early 1970 would've had them.

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