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**72 Cheyenne K20** · 02-10-2026, 05:40 PM

I have a Rochester Quadrajet number 7043208 with a date code of 1538 on my truck when I bought it. All of the engine is original except for this.

From the number 7043 it’s from a 73’ but the date code indicates 153rd day of 68’ or 78’.

Does anyone have a clue or seen this happen before?

Thanks, Scott

02-10-2026, 05:40 PM	#1
72 Cheyenne K20 Senior Member Join Date: Feb 2003 Location: Staunton, Virginia Posts: 596	Quadrajet Date Question I have a Rochester Quadrajet number 7043208 with a date code of 1538 on my truck when I bought it. All of the engine is original except for this. From the number 7043 it’s from a 73’ but the date code indicates 153rd day of 68’ or 78’. Does anyone have a clue or seen this happen before? Thanks, Scott Attached Images