Originally Posted By fast68plymouth
Originally Posted By csk
it had 20 psi at Idle, 40 @ 3000,before all this it had 55 @ 3000


I know of enough instances of using the schubek/tool steel type lifters on cast cams where the outcome was the same as yours that I'm comfortable in my assumptions that it had nothing to do with oil pressure.

There was a point in time where I felt this approach to solving the problems with flat tappet cams wearing out in street driven vehicles had some merit, but I've seen enough of them, and know of enough others, where I no longer feel that's the case.

As Oldiron stated, his motor showed no symptoms at all from this happening to his cam.
The motor was getting freshened, and it was discovered during tear down.
Since there is only "wear" at the nose of the lobe, and no wear on the lifters, it doesn't even change the lash.


I checked lash every 1000 miles & there was no change, I have not pulled the engine out yet, I have found some things, the oil pump shaft bushing was very worn & sloppy , also found that the oil pump shaft was to long, it bottomed out in the oil pump keeping the drive gear about .050 from sitting down on the shaft bushing.The oil pump looks very worn & scuffed ,cam bearings look squished out also

Last edited by csk; 11/12/17 07:35 PM.
1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5