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it's a world motown block std bore and stroke 400 ci 5.7" rods (engine was put together about 16 or 17 years ago, that was a good rod ratio at the time so the oil ring didn't go thru the wrist pins, at least that's why I made the choice) Mahle flat top pistons with valve reliefs AFR 210 race...

I tried calling Johnson and sent them an email and am awaiting a reply. They don't have anything listed on their site or in the FAQ for oil recommendations, unfort.

Hello, Long time lurker, first time poster. I am finishing upgrading my engine by adding a retro fit hydraulic roller camshaft and new cylinder heads. Previous camshaft was a solid flat tappet and I ran Valvoline VR1 20w50, i believe. Now that I am going to run a hydraulic roller cam (with...