Re: Water pump dates
Quote:
Originally Posted by l79m20
Am just finished changing out my water pump for a 250 cu and am wondering if the pump taken off is the original one to the truck, I am second owner. On the front of the pump is cast into pump GM7 and the casting numner on the pump just above it is 3788478. What I assume is a build date for the casting is a circle with an m in the center then G309 another circle with a 1 in the center. Can any decode this for me and do i have the original pump, will save it to be rebuilt at some other time. Any thoughts? This is a great site!!!!.............................Kirby
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Kirby, You don't say what year your truck is but the date code G309 would most likley be as follows. G=July 30=day 9=year
Here is an example.
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1963' Chev Custom Cab 502, 67' 435hp 3X2 intake, 9" 4:30 Posi
1961 Impala SS 348/350 4-speed 3:70 Posi
1961 Bel-Air Bubble Top 283 Turboglide soon to have a 348 3X2 4-speed
1950 17' Fairliner twin cockpit barrel stern 312 Y block 1X1 intake Borg Warner 1:1 gear
1957 Fleetform 14' twin cockpit barrel stern 1969 BP-125 Merc
1949 Transitier 3-wheel forklift Crosley 4-Banger
98' FXD
2002 2500HD
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