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Old 01-24-2013, 01:45 AM
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Turn the head over and work on the roof of the intake port. Get a long 6" shaft carbide burr cutter so it will reach all the way to the bowl from the intake side.

using a 3/8" cylinder shaped cutter with 6" shaft:

Raise the roof of the port approx 1/8th inch from bowl to exit and carve the flow path on the common wall side of the bowl while streamlining the guide boss. Use a felpro 1205 gasket as a guide. Never mind the BS on the floor of the port for now.
Look at the pic I posted.

Last edited by F-BIRD'88; 01-24-2013 at 01:52 AM.
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