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I have the World block with the GRP pro series aluminum rods and mopar pin size. I run the 4.500 crankshaft. 4 of the rods need to be clearenced to clear the cam tunnel and pan rail.



Hi Tommy,
With the Miller alloy rods with a standard ground roller in most cases you end up with a hundred thousandths cam to rod clearance. That is with a chevy 2.2 rod journal. It is close and there is block clearancing that must be done. I will say if I were going to build one and did not already have a block I would go for the .250 raised cam block, it just would make things much easier. poppaj



Well, I stand corrected. I called my engine builder this morning and he said it would fit with 2.200 pin, like you and others said. I guess I just wouldn't want to clearance my rods that much. I don't even like clearancing mine for the 4.500 stroke, and we just massage them a little. But thanks for the info, good to know.