AAR Hood - 72 Duster

Jo D. we were fully aware of the zinc problem with the newer oil formulations and running flat tappet cams. Per Indy's cam recommendation and specs we selected a solid lifter flat tappet cam and used only one of the dual valve springs the heads came with for break in. We also filled the engine with Shell Rotella (high zinc diesel oil) and I think the owner even added some additional zinc additive for break in. It was after he had driven it a hundred or so miles that he noticed the oil pressure was dropping excessively once the oil warmed up. He parked the car while he saved cash and considered what to do. After discussions with a local Mopar drag racer and well known area engine builder he pulled the motor and sent it to him for tear down. Besides the cam damage they found a LOT wrong with the motor. This short block was purchased from the Indy booth at the "Mopars at the Strip" and was bagged/stored until we got the heads a couple of years later, also at the Indy booth, CNC'd 360-2s. None of the problems found were the result of our assembly but from the machining and assembly of the short block, by Indy. This isn't ment to be a Indy bash it just sad that so much $ gets flushed down the toilet on this stuff. It isn't like were all sleeping on a mattresses stuffed full of cash. My friend will probably have another 2.5K to 3.5K in parts, labor and new roller cam setup to get his car running again. That's alot of money for 100 miles of fun.