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Old 06-11-2011, 01:05 PM
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Being retired I have PLENTY of time to debur the block, I did the inside and outside on my 507" Cadillac block and heads. I'm sure there are area's on the inside of the block that may benefit a little from the procedure, eliminating stress risers etc.

Oil drain back is always a good idea, I drilled a 9/16" hole at the rear of the lifter galley and radiused it with the die grinder just because their isn't one, but me doing the outside is strictly for the OOOOH effect. Hey, if you have the time, tools and inclination ...why not?
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