Oil pump drive

[chargd72]

I'm building a stroker motor out of a 96 360 magnum block.  I'll be using a roller cam that has a custom grind and a high volume oil pump.  Will the stock magnum oil pump drive be sufficient?  The stock motor was running a HV oil pump so I'm assuming it's a hardened steel shaft. 

[John_Kunkel]

If your roller cam is billet you'll need a bronze gear on the intermediate shaft.

On the HD shafts with iron gears, it's not about hardness (they test the same on a Rockwell tester) but about the shape of the hex end of the shaft; factory gears have a sharp transition from round to hex while the HD shaft has a gradual radius to eliminate the stress riser.

[chargd72]

Great info.  Thanks!

[chargd72]

Talked to comp cams.  The cam I have has an austempered core so it's recommended a steel gear for the shaft.  But I'll probably still order a new one that doesn't have the sharp transition you mentioned.