SB Crane Retrofit Roller Lifter Issue

Yes, those are the lifters I used. The cam is part number is 669641. There was a guy over on moparts who put this exact same cam and lifters in a '73 340 block and had bad oil pressure. His oil pressure was fine when he was running a flat tappet and the cam/lifters was the only change he made. He also said his valve train was noisy. Most likely same issue but unfortunately he didn't look it over during assembly. He called Crane and they told him they didn't know of any problems?

I am told a cam with a slightly smaller base circle will correct the problem.

Yes, it most certainly would. In your case I would like to see that oil groove .020" or deeper in the lifter bore. I'd send Crane a pic too and ask them what the heck is up. That's just wrong. Maybe comps retro fit rollers would fit right?

It's hard to tell if this is a cam or lifter problem.