1970 L-78 Engine Code & Car Vin # Question

[YENKO DEUCE REGISTRY]

JoeC;
I have also read Colvin's book regarding decoding the engine stamping, and also think that the first digit of the last six should start with a '1' to denote the Nova line.

I agree with both you and Elcamino, the Willow Run plant only built Novas in '69/'70 to my knowledge, so the engine is out of a Nova. The last six digits probably started off with a 100001. By the 4th week of May when the '70 COPO Novas started production, the last six digits are in the '348900' range, and the COPO run ends with the last six digits in the '370900'. The 175 Yenko Novas and the 2 Canadian COPO Novas are sprinkled throughout this range of approximately 22,000 VIN's.

As for the VIN stamping location, I have never seen a Nova VIN stamping anywhere else but the cylinder pad. All original engined Yenko Novas have the VIN stamped on the pad. I cannot speak for Camaros, Chevelles ect, but the Novas seem very consistent with this location.

Marlin