Quadrajet Problem Solving > Quadrajet Parts and Numbers

Decode -- help, please...

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Sonny:
My Quadrajet is stamped with 7040507 and a date code 1457.

Various sources on the Internet say 7040507 decodes to a 1970 Chevrolet Camaro, Chevelle, Corvette, Nova; SBC 350; manual transmission; California/High Altitude.

My question is about the date code. Does it decode to 145th day of 1967?  That seems too early for a 1970 application.

Looking forward to your input.

Thank you.

Frank400:
99% sure it's 145th day of 1977, replacement carb bought over the counter for 1970 chevy 350, California application.

Sonny:
Ok. That makes sense to me. Thanks for your help. Hope to begin disassembly of it this week.

Cliff Ruggles:
The "507" is most likely going to be the CA version of the "207" which was used on the 350hp engines with the manual transmission, not the 300hp......nice carb.....Cliff

Sonny:
Thank you, Cliff.

 I am considering a rebuild of this carb for use on the nearly-stock ‘78 SBC 350 with TH350 that I have in my ‘66 Chevy II 100 Series station wagon. The non-stock components are Edelbrock 2701 EPS Performer dual plane intake and 1406 AFB. I know I will need a spacer to mate square bore intake to spread bore carb. At this point I’m reading about the Q-jet here on your forums and in the several GM service manuals I have in hand.

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