Big Block Chevy smog ID help??????

**iluv69s** · #1 03-20-2009, 04:02 AM

Finally picked up this smog stuff...tryin to figure out if it will work for my car.......i could not find the original thread, but a pic is worth a thousand words..... Thanks

**iluv69s** · #2 03-20-2009, 04:03 AM

numbers..

**iluv69s** · #3 03-20-2009, 04:03 AM

more numbers

**iluv69s** · #4 03-20-2009, 04:05 AM

more

**iluv69s** · #5 03-20-2009, 04:06 AM

one more

HiHorse · #6 03-20-2009, 04:09 AM

its a small block setup

**iluv69s** · #7 03-20-2009, 04:16 AM

front view

USER-3965175 · #8 03-20-2009, 05:07 AM

Your smog pump assembly is for 1969 307 and 327 engines with standard transmission. The "293" diverter valve is what makes the assembly for 307 and 327 engines - "295" diverter valve was used on 302 and 350 engines with standard transmissions

The date is missing the first number which would be "0" - "1" or "2" so the date could be "069" or "169" or "269" the day of assembly and "9" is the year - 1969 the last number "1" is for the shift - 1st shift and "S" is for Chevrolet classification

USER-3965175

**Kurt S** · #9 03-20-2009, 10:26 AM

http://www.camaros.org/emissions.shtml#pumps has more info.

I doubt the "1" in the date code is the shift. I've never seen a 2. Probably a plant code.

I don't think I mentioned it in the article, but there's a casting date behind the fan.

**BARRY** · #10 03-20-2009, 03:51 PM

1 is for chevrolet divission and S is for saginaw

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