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The forged steel cranks are ok, just check the journals for taper and size, as I have seen a few that had to be reground. Eagle stuff is machined off-shore and sometimes they do have quality issues.

There is about a 20 cfm difference between the chevy heads and the X/J mopars. The mopar heads fall off right after .500" lift and start backing up above .550" where the chevy heads (461, 041, 462) will not lose as much. The exhaust post are even worse on the mopar heads.

To the original poster. The EQ heads are better than the original heads, although leave much to be desired. Anything you can use on a 360 will work on the 340 excluding the crank and pistons, and the bushed rods. This I'm sure you're aware of. The drilled crank for the pilot doesn't mean it's a...