Correct Deep Groove pulleys 70 L78

[JRSully]

Trying to figure out if I have the correct DG water pump and Crank pulleys on my 70 L78 Nova. I understand that Chevy switched P/N's and or DG pulleys mid year on the SHP BB Nova's. My build date is the 2nd week of May 1970, I have been told they are supposed to have the same pulleys as the LS6, if the car was a late 70 car. Any help would be appreciated. Thanks SULLY

[T Billigen]

Another one for Rick P. [img]/ubbthreads/images/graemlins/scholar.gif[/img] [img]/ubbthreads/images/graemlins/scholar.gif[/img] [img]/ubbthreads/images/graemlins/scholar.gif[/img]

[Keith Tedford]

For what it's worth, our '69s have the 3 1/4" deep groove alternator pulley. I also have a 3 5/8" deep groove pulley which may be for a Z/28.

[Mr70]

Sully
For your May 1970 Nova L78,you should have
DG Water Pump Pulley#3976060AP.Look in box 22 for the AP suffix.
Your DG Crank Pulley should be Part#3955291AB,and 2 grooved is the only way it came.Look in box 35 for the AB suffix.The 1970 L78/LS6 production cars shared these as well.
DG Fan Pulley#3995647AP was a 1971 Over the counter pulley.It will work,but not assembly line correct.

[JRSully]

Thanks Mr. 70, I have the 5291AB, believe I have the w/p 6060, do they repro this one.??? has the p/n on it any way to tell.??? I have an orig 69 W/P deep groove pulley and a orig GM 68 crank pulley that I will be unloading soon if anyone is interested. Thanks again for the info SULLY

[Mr70]

The 291 & 6060 has been reproduced.One of the differences is in the inside pulley lip.It looks much different then the original.They are out there today.

[RPZ28]

Sully, I would be interested in the 69 w/p deep groove pulley.
Ron

[JRSully]

Ron, I will let you know, will probably try swap the 69 w/p pulley for the correct 6060 w/p pulley I need if you can find me one,I would be interested. Failed to mention that the 68 Crank pulley I have is a deep groove as well. Thanks SULLY