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both heads measure at .995-,993 pretty evenly across them. how far can they be safely milled then?




A whole lot more

My 915's have a .110" angle mill plus a .025" straight cut on them
I'd say there's about .100" material left between the spark plug threads and the deck
Been it for years




Now thats screwed up How does the intake fit ?

MLR426





It's been made to fit together
Only thing I worry about is performance. I make things work to get what I want if need be
Makes life interesting and I can't argue with the slips