[MatthewKlein]

Originally Posted by spectramitch

My intake sits a little high with .062 gaskets making it so the thin area on the bottom of the port doesn't pinch down on the gasket. The intake is a ported Victor.

How do you determine exactly how much to mill off each intake flange?

Maybe I'm missing something.
From what I see the gasket looks compressed to match the intake flange.
Top of the flange is much thicker than the bottom. If I'm seeing correctly the bottom edge is also backcut.

Was there a vacuum leak?

[spectramitch]

I set up the intake and cut .045 off a side. It lined up much nicer. The bottom was crushing the gasket a little harder than the top. So I set it back up today and took a couple thousandths more off the bottom than the top, .005 total more.

[Dragncar]

Originally Posted by spectramitch

My intake sits a little high with .062 gaskets making it so the thin area on the bottom of the port doesn't pinch down on the gasket. The intake is a ported Victor.

How do you determine exactly how much to mill off each intake flange?

Machine shop told me this: Get some shim stock. Can be brass shim stock or even thin cardboard, 12 pack cartons, doughnut box, this stuff like that. Put a caliper on the cardboard and measure and write it down.
Put your intake on the engine with the gasket you will use. Then experiment, shim it on 4 corners, play with it until it aligns.
Whatever shim stack makes it right, take that amount off the intake flange.
I milled my Victor .035 to align on my High Ports doing this.

I bought my intake without crossover. I did not mill it and it sealed just fine. Used the KRE crossover for the High Ports so the rubber gaskets aligns up in the front. Actually bought the very first one available from KRE.

[Dragncar]

Originally Posted by Tim Corcoran

I bought a new Victor several years ago and it sat too high with a Felpro .040 gasket. I checked the port alignment without the gasket and it looked perfect. So I put a small amount of silicone around the ports and water cross over and ran it liked that for many years and it never leaked. Currently I am building a new engine and if it fits the same on the new engine I won't bother to mill the intake I will use the same process. Besides, gaskets are over rated.

I used no gasket on my oil pan except for the cork one on the rear main. Silicone sealed up just fine, no leaks.

[Skip Fix]

I start with no gasket, then a gasket, then use feeler gauges for shims with or without a gasket. Then knowing what thickness gasket you will use you can give machinist specs. SCE can make .120 thickness gaskets various port size.

[J.C.you]

You can buy rolled gasket material different thicknesses, make your own