Not sure if you have ever done porting work but be careful. My only experanice is with cars (cast iron and aluminum heads/intakes) but it seems these are way softer aluminum. I started out with my die grinder and rolls I normally use and they were eating it up. I ended up digging out the dremel and attacking them with it.
And yes major props to Beefking for sending us heads. When it's not in the triple digits I plan on really working on them. I'm gonna ruin one but I'm opening it up with no low end in thought and just high RPM flow just to see what it will do. No intake spacer for a short runner.
The other I'm gonna go way milder to hopefully work with my a12 cam and daily driving. My buddy is gonna make me another intake spacer and I'm waiting on another "racing" intake so I swap them out easier.
Of course I'm also waiting on the mail for valves, seals, guides, and all the other goodies to rebuild 2 heads.
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