QUOTE FROM JOHN V "I'm not able to look at my own 9770716 heads now, but do I recall perhaps a clock indicator near the cast date tag under the valve cover? Any other cast identifiers there?
Later model heads got a variety of cast identifiers external to the valve covers, including the cast date and a D-N shift indicator. Wouldn't surprise me that the '64 heads included similar cast identifiers in a different manner.
What would be an example of a foundry pattern number? Is that typically found on other Pontiac iron castings?
You mentioned Foundry number 1. I thought Pontiac cast all their heads at their own foundry at the Pontiac complex. What would Foundry number 1 represent?[/QUOTE]
Foundry pattern number----Why sure. Grab your iron distributor and look at the stem. Grab your original cast camshaft, although not a GM manufactured part. Check out your cast crank.
Outside other than 9770716, is GM on one end and 1 on the other. The block has GM 2. I assumed from the Chevelle and Camaro forums that these were "foundry" lines where individual components were cast. In other words, certain components are cast on different lines. In this case, heads on one line---blocks on another. I visited the New York Tonawanda GM Foundry when it was still going hoping to see some BIG BLOCK 427 Chevys being cast. THAT was a HUGE operation. No way to see exactly what was cast on that day but you knew that engine blocks were being cast on that line.
Sorry about those poor pics. Nobody at the gathering had a better phone cam so we suffer with that Polaroid until I recover from my donation to PY and the 2900.00 order. Hee Hee there goes Christmas!!!
|