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I hope this water pump is for my 1972 454 auto,PS, PB,AC (1/2)
 7/18/18 3:37pm
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Joined: 7/9/2018
Posts: 1

20M    3858284
what is the coding format for water pumps? 

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Re: I hope this water pump is for my 1972 454 auto,PS, PB,AC (2/2)
 7/18/18 9:46pm
Adams' AppleLifetime Member
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Duncanville, TX - USA

#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19639

It is the correct part #(3858284) for a big block of that era. Need to look for the casting DATE to determine if it is "correct" for the car, if you plan on having it Judged. Depending on the pulley used, the casting date may not be visible for judging, but it never hurts to have the correct one. Also, if you look closer, you'll see the "20M" is actually "2GM". Thumbs Up

Joel Adams
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