MSD Distributor will not seat

[ebowie]

My MSD distributor will only go in this far, it’s same size as the original one and I have turned over the engine to try to seat it. It feels like it is hitting the bottom of block.

 

[General karthief]

It likely is sitting on the oil pump shaft, 5.0 or 351?

 

[MoneyPitFox]

ARP Oil Pump Driveshaft? I have the same issue right now. Directions have been to cut the bottom of the distributor or change the oil pump driveshaft.

 

[revhead347]

Jiggle it more.

Kurt

 

[ebowie]

It likely is sitting on the oil pump shaft, 5.0 or 351?

It’s a 302 now 347 with new ARP shaft

 

[ebowie]

ARP Oil Pump Driveshaft? I have the same issue right now. Directions have been to cut the bottom of the distributor or change the oil pump driveshaft.

Yes it’s a new ARP shaft will keep trying let me know how you resolved this

 

[Hoytster]

Yes it’s a new ARP shaft will keep trying let me know how you resolved this

Usually jiggling it and/or lightly tapping it while pressing down usually gets it to seat.

If that doesn't work, I've used folded sandpaper, or a small file, and lightly clearance the inside of the hex on the distributor to get it to slide on easier. You can use a 1/4" socket drive or the like to test the fit.