Throttle man ..couple things to keep in mind when dealing in FE blocks that come out of boats ... one rotates in reverse and when salt water flows thru a cast iron block it eats the inside ... so cylinder walls are thin. its best to get them from a boat used in a river or fresh water. The blocks I always found were CENTER oilers ...that came before SIDE oilers. The block usually cast on the rear will say 427 HI PERF. or casting numbers under the starter. A bunch that I found were 410's in CRIS CRAFTS.
Ron
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