Smog pumps
 

Pumps #
1,3,4,5,6,7,8,9,10,and 12
$350 each

#2 is $1250

#11-$1350
Would consider package price on all

Stamp date. Cast date
1- 28671Y 340 BB relief valve tumbled. No Fan, spins

2-13481Y 152 BB relief valve, nice original patina,
complete with BB Bracket and adjuster, White fan, NOS Diverter Valve.
522 pulley,spins

3-25981S. 297. White Fan Spins

4-13691S 128 White Fan Spins

5-17191S Blank No cast # at all. Has white fan

6-26491S. 69. No Fan spins

7-17491S Torn down in a box

8-0901S 10. Spins has white fan but average



9-28511S 176 Spins White Fan, don’t know why, should have a black fan by this date I believe

10-32721S 314. Spins but rattles, sounds like broke scrapers
Black fan

11-11431S 1973 Corvette - complete take- off, hoses,
Trees, pump, brkts, White Fan,check valves
This is a complete take-off

12-22921S 220

Text for pics
Thanks SYC!!
Joe
608-751-0509

TTT
Bump
Again Back up
Joe

IS number 8 dated 9th day of 1970 or 90th day of 71?
There seems to be a number missing making it difficult for me to determine.

Good original white fans are getting scarce. Save the one off of the 197 set, as it should not be used that late.

I will dig these out this weekend
Yes the #8 pump is dated 90 day of ‘71
But I will verify this weekend
Will text pics to those wanting this weekend also
Joe

Just to help out
-0901S would be 1970 90th Day (March 31) 1st Shift Saginaw Plant

Notice many of your pumps have that same 1st shift code.
Cheers.

The smog pumps I have had are dated the following manner
first 3 digits - the day of the year numerically beginning with 001- next digit is the last of the year - then shift number - then plant alpha.

09011S would be 90th say of 71 1st shift
09001S would be 90th day of 70 1st shift

OFTEN the stamp is cocked and the numbers trail off leaving the first number as a VERY LIGHT impression. I have seen this enough times to know it is a pretty common occurrence.

OK, pulled the pumps out today
So when I re ran the ad in February
I had forgot that the #4 pump had been sold back in January.
Very sorry about that.
The #8 pump is stamped as printed
“0901S”
I believe there is a # missing in the front of the date.
So, this could be
“00901 or Jan 9th of 1970,
10901 or 19th day of April or
20901 or July 28 of 1970
What ever that first number is I can’t say for sure
This is how it was found
Text me and I will try to get you the best pics I can
Joe

Joe - is there any way to figure it could be a 3 or is the first digit completely missing?

30901S, being just under, 4 months prior to production would work for me.

Yes it very well could be
The best way would be to pop the white fan off
and check the casting date under the fan.
But I really don’t want to hurt the fan
I’ll see what I can do if that helps.
Joe