cheftrd Posted August 8, 2006 Share Posted August 8, 2006 A customer brought me an engine today for a rebuild and I need some help I.D.-ing some of the parts... He bought the engine and car together, so he has no idea where the stuff came from. The crank appears to be a high-quality forging. The only marks are 28671 and 3750 stamped into the front of the first counterweight, 4340, 355, and KKO in the forging in the side of some of the counterweights. I assume the 3750 is the stroke and 4340 is the material. It also has some serious I beam rods with no ID, but ARP2000 bolts. The engine has spun 8000 rpm for two years with no problems as an NA, but I'm bumping up the power substantially with an ATI supercharger or N2O and need to know if the swinger and rods are up to the task or not. Any help in the crank ID would be appreciated! Thanks Quote Link to comment Share on other sites More sharing options...
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