Reply to "Oil Pump Drive Shaft - ARP or OEM"

The stock 351-C dizzy gear drive pin WILL fail for a number of reasons, even in stock engines (if there is such a thing after 36 years and many unavailable stock parts). If the drive pin is strengthened by any of a number of techniques, the next weakest link in the chain of parts is the stock oil pump driveshaft. Ford sells (or once did sell) one that works well under even racing stresses.

Note- the same drive system is used in the 289, 302, 351-W and 429/460/510 Ford engines as well as the various Cle-vor blocks. I have no data on their failure rates, but high rpms seem to be part of the overall problem.

A second thought- the 351-C oil pump gearotor set is much taller than any of the other engines including the famous 427 FE side-oiler. it is possible to retrofit the Cleveland gearotor set and pressure pop-off into other oil pump bodies, but an extended cap must be built to accept the big gearotor. I believe the aftermarket Titan racing aluminum oil pump uses a stock Cleveland gearotor.