Engine milling maths
No, sir. I don't think you have it right.
By milling both faces, yes, any intake will fit. That is a good thing. Putting heads on a different block isn't a problem either because.....any intake will fit. "jacked up" ??? WTF is that?
Are you feeling okay? Been drinking tonight ?
Doing it your way, the intake is now only a direct fit to the milled heads.
Doing it the right way, every intake fits not only the milled heads but ALL other heads.
Try some humility sometime. Being so sure of yourself sets you up to look foolish when you are proven wrong.
Sorry my friend, but you are still mistaken. You make the assumption that every intake manifold is the same size, and they are not. Not even close.
One of the few times I’ve machined the heads was a SBC and the customer was adamant about milling the heads, because we were going to the dyno. He had 2 intakes, both brand new, both ordered at the same time. Edelbrock Victors.
He wanted a back to back test on a virgin casting verses his porting, which I thought was a great test. When doing the pre-assembly the intake needed something like .040 off of it. So I called him and told him to bring the ported intake by so I could fit that one and see what it needed and surface it if required.
He read all the books and **** like that and he wanted me to mill the heads instead, so he could drop on any intake he wanted. I told him it doesn’t work that way, but I gave in and gave him what he wanted.
So the engine goes together and we get to the dyno and we flog on the stock unported intake and then we go to change to the ported manifold. Guess what? No fit. Not even close.
Luckily, we had enough intake gaskets to stack 2 .060’s together and tested it. His ported intake did very well. I forget what it picked up, but IIRC it was a 30 HP average.
The best part of the day was the dyno guy asked who the idiot was that milled the head and not the intake. The owner of the engine had to fess up to that.
No 2 intakes are the same measurement. So milling the heads is not going to do you any favors, or make it so you can swap any intake on you want.
Again, I will not kill a head face. It’s just dumb. Unless you are running a class with a port volume requirement and then you have to do it.
