Originally Posted by tclederman
The casting codes are the best IDs for a 261 (the "captain's bars" were on at least one year of 235 blocks - 1954).
Learn something new everyday!
Before today I thought the captain's bars were the definitive answer on "is it a 261 or not?"

Thanks,
Grigg

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-