70 Swinger 340

Mad Dart said

Yeah it was a big hole. It dropped a valve, took out the piston & Rod. There was nothing left in that cylinder but a big hole. Pieces of the shrapnel were in the carb and exhaust when that one went. When I installed the stroker, I fired it up walked behind the car and some of the left over pieces in the exhaust hit me in the legs. Lol

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I'm taking a gamble on repairing the original block. One of the guys at the machine shop looked at it and said no way, and the other said no problem. It appears that the motor was rebuilt at some point in its life and had the pistons installed backwards with the valve reliefs in the wrong position. I've heard this was common practice for more power, not sure if that's true. install a big cam and KAPOW! Every piston had valve marks on the wrong side. The machine shop said for a mild build it should hold, we will see.