67 Alt. Pulley 3844100

big iron · January 18, 2012, 09:46:26 PM

Does anyone know if the 67 L78 alt. pulley 3844100 is being reproduced?
Thanks.
Bob

bertfam · January 18, 2012, 10:33:52 PM

Check with the 409 guys. That same pulley was used on the 63-65 high performance 409. Also check with the Corvette guys. It was also used on the 69-79 Corvette big blocks and small blocks in various configurations. Then there's the 65-67 Chevelle 396. That also came with that pulley (with AC and 62 amp alternator). Not to mention the police cars from the early 70's. Heck, it was even used on the 74/75 Vega!

But to answer your question, it's still available from GM. Go to GMPARTSDIRECT.COM and put in 3844100. $20.39 plus shipping!

Ed

Mike S · January 18, 2012, 10:36:21 PM

Do you know the size of it? I have a NOS pully that *may* be it.
A quick measurement is 3.2"
Mike

big iron · January 18, 2012, 10:51:42 PM

Mike,
The OD is 3 7/32 3.218. I would think that there should be a part # and broadcast code on the pulley.
The 68 Z 1970831 is 3 3/16 3.187.

Ed,
Do you remember if there was a part # on there 38244100 pulley?
Thanks for the info.

bertfam · January 18, 2012, 10:55:55 PM

Sorry, can't help you there.

Martin might know. I'll ask him to reply.

Ed

Marty · January 19, 2012, 12:25:18 AM

Sorry I don't know the answer either. I don't even remember seeing one of those pulleys.

Martin

big iron · January 19, 2012, 02:17:26 PM

So, the question remains. How did the correct pulley (67 AIM L78 A4 #2 3844100 note torque for alt. nut) get installed on the engine dress line with no part identification?

Anyone with an original L78

Ed and Martin,
Thanks for the reply.
Bob

acelr8 · January 19, 2012, 07:24:29 PM

The original pulley has a stamped number on the front.The NOS that I have does not.Jeff

big iron · January 19, 2012, 09:03:48 PM

Jeff,
Is there a broadcast code after the number.
Would there be a picture available to see what to look for?

Bob

acelr8 · January 21, 2012, 02:04:04 PM

Pic as requested of original.Jeff

big iron · January 21, 2012, 04:40:58 PM

Jeff,
Thanks for the picture, just what I was looking for.

Ed,
Try ed GM Parts Direct but part is no longer available.

Can anyone point me in the right direction.
Bob

1968 Z28 · January 21, 2012, 06:29:31 PM

Might give a look see here....

http://www.gmpartsgiant.com/parts/gm-pulley-v-3844100.html

Give them a call and ask whatever. Have bought parts from them before.

acelr8 · January 21, 2012, 11:08:16 PM

If you get a zero I might have a spare.Jeff

big iron · January 22, 2012, 12:06:06 AM

Jerry,
Thanks, will give them a call Monday.

Jeff,
Thanks again, will let you know Monday.
Bob

big iron · January 23, 2012, 03:55:58 PM

Part no longer available.

Jeff,
Can you help?
Would you know if the original 3843346 alt. fan has the part # stamped on it?

Bob

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67 Alt. Pulley 3844100