Thread: Wanting to give my 460 some pep!!

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Originally Posted by moparfever

Actually I did. Todays oil is just fine. Roller tappets weren't designed for better wear characteristics, they came about due to the need to follow steeper profiles. With advances in cam profiling flat tappets now enjoy pretty fast opening ramps. Think about how much force bears down on the tappets. Now compare how much contact area bears all that force is on rollers vs. flat tappets. Rollers have very little area bearling the load. Honestly, with today's oil I'ld expect a good flat tappet cam to last >100,000 miles, especially if he keeps the spring pressure in line with a street engine that won't be hitting 7000rpm. Also don't forget that materials and quality control on cams and lifters are considerably better than yesteryear.

no the oil is not better it has more detergent in the oil. so the oil is not better now? a roller cam can and will go for 300.000 miles on junk oil will a flat lifter cam ? lifters and cam cores are not better then older iron cores put the zinc back in the oil then i may think about more flat lifter cams every thing gets roller cams but the older stuff i build and i send the old core in for a regind for stock use . and then we use hi zinc oil but thats just how i build them