Speedmaster Small block porting tips and results Part 1

yellow rose said

I agree that a 75 might help. From the pictures the bowl looks like it can take that steep of a bottom cut.

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I'd have to make a phone call but IIRC I had a 45 degree seat that had an 82 degree bottom cut for bowls like that. I know I had one with a 75 but that bowl may want even more than a 75.