Any good machinist, (automotive/whatever), will be able to quote you off the top of their head, EXACTLY how much has to come off intake, (bottom and sides), to make them fit after block/head alterations.
If they don't, I"d seriously look into finding another machinist.
I would strongly recommend checking your current valve to piston clearances first. That will tell you how much you can safely move the heads closer to the pistons. Then you can determine head gaskets or head milling limitations.
It doesn't cost that much to have the intake angle milled to match how much you take off your heads. If you can go over .030 on the heads and still keep your valve clearance I say go for it.
Oh, definitely discuss this with your machine shop. At some point on head shaving you wind up having to angle mill them. If you eventually get close enough you will have to have your pistons fly cut and your motor rebalanced. That seems unlikely with dish pistons but its possible.
1965 289 Mustang 2+2
best 60: 1.70 best 8th: 7.71 @ 89 best qtr: 12.12 @ 110.95
[ This Message was edited by: Hottarod on 1/18/04 8:31pm ]