Big Block Chevy smog ID help??????
 

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

Re: Big Block Chevy smog ID help??????
 

numbers..

Re: Big Block Chevy smog ID help??????
 

more numbers

Re: Big Block Chevy smog ID help??????
 

more

Re: Big Block Chevy smog ID help??????
 

one more

Re: Big Block Chevy smog ID help??????
 

its a small block setup

Re: Big Block Chevy smog ID help??????
 

front view

Re: Big Block Chevy smog ID help??????
 

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

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Re: Big Block Chevy smog ID help??????
 

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.

Re: Big Block Chevy smog ID help??????
 

1 is for chevrolet divission and S is for saginaw