X, It has been around for some time and used on the Ford performance crate engines. Part #M-6010-C58. Still a two bolt main with 3 inch mains and not recommended to be bored more than .030 or stoked more than 4.00. Not meant to compete with the likes of Dart or World, but costs a lot less too. Basically it is a nodular piece with some added material. The one you blew up turning 7,500 was most likely a Sportsman. Any 3.0 main Windsor turning 7,500 for too long is going to let loose. Too much heat in the bearings the experts say.
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Originally Posted by RACER X #99
I had a 351 Crate a few years back and I beat the crap out of it on the track. I shifted it at 7,500 all day long and it finally blew up and .....
RD
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Sounds like you got a decent amount of time from it no? Mine is still kicking strong but I shift at 6,000.