Single groove "291AB" deep groove pulley

[JRSully]

Has anyone heard of a single groove "291AB" deep groove crank pulley.?? I have an original 69 L78 Nova, without P/S and it has what appears to be an original, untouched single Groove 291AB on it, doesn't looked to be cut or altered in any way, it has a about a 3/4 inch wide ring around the front of it as well, will try to get some pics posted, just trying to find out if these exist. Thanks

Sully

[Mr70]

I haven't seen one,but thats not to say that didn't make one.
Are you sure it's not a single groove #3955292 hydra lifter pulley,or even a two groove #3955290 hydra lifter pulley cut in half and restamped?
Post pix when you can.
Rick

[JRSully]

Definitly a GM stamped 291, came with the orig 824BV W/P pulley on the w/p. definitely a deep groove and looks original, very strange to say the least.

[COPO]

I don't have my books handy, but I thought that pulley was standard on solid lifter BB engines in 69 including the COPO's.

[JRSully]

COPO,This pulley was on my solid lifter 69 L78 Nova an original untouched engine, car has no P/S that is what has me wondering, I have seen many 2 groove 291's

[JRSully]

attempting to attach a picture of this 291 pulley.

F:\DCIM\100OLYMP\P1010039.JPG