Deep Groove Cast Iron Crank Pulley 396 427 454 3899660 - two grooves

**AnthonyS** · #1 10-09-2025, 02:57 AM

Hi Friends,

I have the pictured deep groove cast iron big block pulley available here.

3899660 it is used, as found, and is mint as shown. Two grooves.

Original, not a repop or OTC replacement - genuine as leather. Assembly line piece IMHO. Corvette Camaro Chevelle Nova...

Hard to find and rare piece. As found condition, not cleaned or fluffed.

Cheers all,
Anthony

**Too Many Projects** · #2 10-09-2025, 04:08 PM

PM sent but have a question....will that work for water pump and power steering ? 1966 Chevelle original pump location and brackets.
If so, I'll get it.

**AnthonyS** · #3 10-09-2025, 06:24 PM

As I understand it with these cast SWP DG pulleys - that a two groove pulley was the fewest grooves available, not sure that they made a single groove one, so, you got this one and if you didn't have PS, then the second groove wasn't utilized...

I suspect this is the one for PS then...

But, anyone else feel free to chime in please.

Cheers all,
Anthony

**luzl78** · #4 10-09-2025, 07:12 PM

i belive the 3869978 is for ps thats what is on my 1967 l78 camaro

**AnthonyS** · #5 10-09-2025, 07:32 PM

Ahhhh, so that three groove I just sold then?

So, what application is this one then? Thanks!

**luzl78** · #6 10-09-2025, 10:12 PM

No power steering

The Following User Says Thank You to luzl78 For This Useful Post:
AnthonyS (10-09-2025)

Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars.