273ci thoughts?

Good luck and stay safe, Still hoping to go to Carlisle this year. Sounds like you will have to spin your motor up high to take advantage of those heads.
Spin it high? Maybe so. The thought is not a street machine build. It will drive the street in a limited fashion and distance. Solid roller cam, 4.88’s, a manual shifting 904, spartan interior... etc...
What Epoxy are you using? I need less than a peanuts worth and don't want to buy 6 oz as Ill never use it all. Intake roof has a <BB sized break into the head bolt boss area. Gonna fix the window with epoxy and the head bolt seat with a hardened washer and some epoxy under it and then torque it down so it hardens under the bolt stress. The bolt torque keeps compromising the repair.
Brett Miller did the work. I don’t know the brand name of the epoxy. Though I’m in the same boat and (not quit yet) looking for epoxy for iron and aluminum metals that play nice with gasoline for a long time.

Pictured below is the only port and the very small portion that needed epoxy. I’m hoping to get to these one day soon since life had other plans for me.

Back to the 273 thread.

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