1971 Rochester Carb #'s

[Gerard Q.]

On my 1971 s/b auto, these are the two #'s I found on my carb, 7041208, 2284. The date code and year produced numbers don't seem to make sense. The GM part# 7041208 which according to Corvette by the #'s breaks down to, 70=prefix code (for 1965-1975); 4=decade produced (1970-1975); 1=year produced (1971); 2=model of carb (Quadrajet 4BBL Fed Standard); 0=division (0,1,2. used by chevrolet); 8=transmission (odd# manual, even# auto). This number seems to be correct for my car although according to the Tech Judging guide the number should be 7041212.
The next number 2284 which I assume is the date code breaks down to the 228th day 1974.
How can the GM part# show 1971 as the year produced yet the date code indicates 1974.
Is this a service replacement carb?
What kind of point deduct will I be looking at with this carb.
Thanks in advance for your help.

[Patrick H.]

Re: 1971 Rochester Carb #'s

Jerry,

yes, it's a service replacement carb for a 1971 MY vehicle, but manufactured in 1974. Unfortunately, although an even number and made for 1971, it's still not the one that came on your car or the "numbers matching" unit.

If it runs well, though, I wouldn't be in a hurry to change. You'll find the 7041212 is not the easiest to find. Start looking now, and in a few years you'll have one you like.

Patrick

[Gerard Q.]

Thanks Patrick *NM*