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09. With the cam installed, make sure that the alignment pin is pointing toward the No. 1 cylinder and both the dots are pointing toward each other. Another indication that the timing is correct is to look at the crankshaft keyway. The keyway should also point to No. 1 cylinder. I ordered a new double roller timing set from Comp Cams (part number 3136), but forgot to get a larger timing cover from Comp. The double roller chain will hold up longer without stretching versus the stock chain.