dizzy help (looking for 1/4 drive upgrade distributor)

[sivadmatt99]

Thanks 5/16" shaft size.
To repeat I have a Duraspark shaft with 5/16" oil pump drive. The shaft has been turned down to .465" in diameter.
Is that the diameter of the original 1/4" distributor??
If that is correct all one would have to do is install a later oil pump for the larger shaft, but the shaft diameter would fit the earlier block.
Advise, Bill

the one i have is .452 that is close. i didn't know the shaft could be turned down.

 

[oldgrezmonke]

Is there a definite specification range for the 1/4" dist. shaft diameter ?

 

[sivadmatt99]

Is there a definite specification range for the 1/4" dist. shaft diameter ?

Thats the onfo im getting.this this my third car with a small six i have owned the only one im trying to get more out of with a 1/4 drive in it.