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**DANTIP** · 10-13-2022, 09:30 AM

I bought a low-mile original '72 C20 that came with the original warranty booklet and Protect-o-plate (see photo). The VIN of course matches, but I was able to match the engine and transmission numbers shown as well. However, I'm not sure what the "D1H" means. I suspect the "R" is for a Rochester Carb, and the "C" is probably the production month. Please share any help.

10-13-2022, 09:30 AM	#1
DANTIP Registered User Join Date: Sep 2001 Location: Fort Wayne, Indiana, USA Posts: 1,890	Protect-o-plate help I bought a low-mile original '72 C20 that came with the original warranty booklet and Protect-o-plate (see photo). The VIN of course matches, but I was able to match the engine and transmission numbers shown as well. However, I'm not sure what the "D1H" means. I suspect the "R" is for a Rochester Carb, and the "C" is probably the production month. Please share any help. Attached Images