That part of the passage is supposed to be blocked off. The holes in your block are 7/16-14 so it is allright to run the tap in the hole. You will just be cleaning the crap out of the holes. Wish I was in Salt Lake, Alta is calling me. I was out there for vacation at the begining of the month and am dying to do some more skiing.
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89 GT convertible, Kenny Brown level 5, Edelbrock performer, AFR 165's, Comp cams XE270HR, C&L 76, 24# inj, Crane 1.7's, 70mm BBK throttle body 298.2 hp 328.2 tq Mustang dyno
"Our lady of blessed acceleration don't fail me now" Elwood Blues
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