505" stroker

I was running a 500" RB with 763hp on pump gas for 3 years of abuse on the street and the track with a 4 speed. 7,000-7,500 rpm shifts and 7000 rpm launches dumping the clutch at the track with slicks. I ran a Hughes girdle with stock main caps. When i tore the motor down the bearings looked brand new. In my opinion the girdle makes it very strong.