Water pump pulley 3995640BV

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**fiveforty** · #1 10-04-2016, 10:24 PM

Could not find the application for this. Any ideas?

**Lynn** · #2 10-04-2016, 10:34 PM

I think big block, long water pump, over the counter replacement. Don't know that it was used on the assy line.

**Mr70** · #3 10-05-2016, 11:24 AM

It's a brief late 1970's over the counter service replacement DG pulley that replaced the original assembly line 1969 DG pulley #3947824BV.Issued for all 1969 Spcl. Hi-Perf vehicles with solid liftered 396cid. & 427cid. only.
I first see it appearing in the parts books around 1977.
I've seen a few of these,and if memory serves,it's missing the snout reinforcement in the back and the 8 cornered indents in front.

Here's an original #3947824BV showing those details.

**fiveforty** · #4 10-07-2016, 10:30 AM

Thanks. that sounds right. I remember buying new pulleys about then for an L88 in a 69 Camaro that kept throwing belts.

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