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Originally Posted by Hoss Blazer

So they should only sell roller cams & ban the rest? All I ever here on here is that....not to many budget builds anymore like this then!

Hoss, take time to read the history and understand the reasons for the advice. OEM's were already shifted over to roller lifters for improved efficiency when they started seeing catalytic converter warranty problems, and replacing an OEM converter was a high cost problem, guaranteed for 80K miles or more. The problem was due totally to high temp contamination by heavy metals in the exhaust, specifically zinc & phosphorus. The answer was to reformulate the motor oil, removing those constituents which had been added in the early days of internal combustion engines to deal with high pressure point loads on machined surfaces - cam lobes, rocker tips, etc, etc - the zinc & phosphorus are "slick" metals that crush, leaving residue behind that enhances lubricity. People immediately started seeing increased failure rates of flat tappet cams, even in mid-mileage engines that had previously been fine and shown no wear. New rebuilds often had failed cams within a few thousand miles. Hogwash? Then buy the flat tappet cam, pay no attention to your oil, and be unhappy when your newly rebuilt engine falls on it's face with a rounded off cam lobe or two.

Best of luck to you with your toy. Perhaps you'll be the exception to the statistics and enjoy a long run with flat tappets.