alum edelbrock heads

0w
Well. With those heads, .030 o/s pistons down .012, 5cc eyebrows, and a .039x4.18 gasket, the Scr comes to 10.44; and the quench comes to .051.You pretty much have to run the 1008 gasket to survive.The .028 gasket would be better for quench at .040, but its hard to say how long it would survive.
Now for a cam. To get the Dcr down for 87gas, the ICA needs to be at about 60*atdc,for 8.6. We know that works. A slightly smaller cam at 53* gets a Dcr of 9.0,for 89 to 91 gas. A larger cam of 66* gets a Dcr of 8.23.
These Dcrs are all for sealevel. At 1000ft, you can subtract .2ish from the Dcrs, so the 53* cam becomes 8.8Dcr, and now 87/91 gas-able.But the 66*cam then puts the Dcr down around 8.0,still do-able.
Get your builder to verify the numbers, after the pistons are in, and;
Happy cam hunting!