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BA Pumpkin

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1.3K views 5 replies 3 participants last post by  fiddlerpin  
#1 ·
Can someone tell me what my numbers mean? My pumpkin is a 3725899 GM20

Serial is BA1207 I know the BA stands for Buffalo and 3:55. Is 1207 the month and date. This is in my 57 210 4dr Sedan. Jim
 
R
#3 ·
Actually the 899 casting was used for several years on non-posi 3rd members. In other words it doesn't mean anything you don't already know.

When you see something like "GM 20" on a casting, that's a casting mold identification number. It doesn't mean anything to us. It possibly helped GM locate bad molds if they saw casting flaws.
 
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