[Tom Vaught]

Originally Posted by Sirrotica

This lifter failure is precisely why roller cams were adapted by the car manufacturers. I saw how since the late 70s lifter and cams were failing at a higher, and higher percentage rate. It's been blamed on everything that it could be blamed on. The engines hadn't changed for decades, yet cams/lifters were failing at higher, and higher rates. This had zero to do with aftermarket cams, and car enthusiasts, nor high seat pressures, the stock cars from Detroit were failing.

Enter roller cams for pushrod engines and OHC cam designed engines, the failure rate under warranty was too high with HFT setups, and the public was turned off when the cars didn't even make 60,000 miles, when the same basic engine 20 years before, used to go 100,000 with just routine maintenance. From a mechanics point you wouldn't believe how many loyal chevy owners swore that they'd never buy another chevy after their SBC failed just out of warranty, and they were looking at $1000-$1500 to repair it.

Camshaft Machine Company/ Crane did the first PRODUCTION ENGINE roller Cams and Lifters for a OEM in that time frame mentioned and the application was the *ord M*stang. And they worked very well.

Tom V.