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#5
03-12-2020, 01:22 AM
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I think they are right on the money. That forging number is not the part number.
Just like 186 sbc heads; all 186 heads have the same casting number, but they may be different part numbers depending on whether they came with 1.94 intake valves or 2.02 intake valves. They start as the same casting but are machined differently. I had a couple of pitman arms with the same forging numbers; but two different size holes for mounting to the pitman shaft.
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