Re: camshaft question
Jeff, That is correct, you can use the cam in later applications but for 65/66/ and early 67 blocks the camshaft MUST have the groove otherwise top end oiling will be comprimised.
The easiest way to tell if you need the groove is to inspect the rear cam bore in the block- if it has 3 holes in the block after the brg. is removed it MUST have the groove.
If the block has the full annular groove in the block the camshaft does not need to be grooved.
Please note that i have seen early "351" 427 67 blocks with the 3 holes and no groove, not sure about 396 blocks.
Also there are specific cam brg sets for the early blocks- SH615S for 65/66/67 blocks and SH616S for the later blocks mid 67 and up. The only difference is the rear brg.
Hope this Helps.
Mike.
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