Thank you! I think you posted as I was writing the novel of thoughts above. I'm not making the same mistake again.. If the small block guru suggest to mill, then I will mill. Just have to sharpen my hacksaw and grinder If .060 is milled, how much would that effect the the chamber cc? Going through my paperwork it says the heads were milled, but not how much. Cost of $96.00.
The equation between amount milled and CC removed as it is not linear but you would be safely up to about 9.5:1 static with 60 thou milling if you are at 8.8 right now. I would just have 60 thou removed from the heads, mock it up and make sure you do not need add valve reliefs, and then final assemble it and be on your way. We know you are low on compression ratio for that cam and we know that the milling will raise your compression quite a bit. The NHRA guys mill them till they are 47CC, and if memory serves me it takes about 70 thou to go from 58 CC to 47 but it might be a bit more.
Good info, thanks. Any intake work need done to match the milling if the heads? Would composite gaskets and a dedicated valley pan be a better option to seal everything?
Yeah you can mill the intake side of the heads to keep the intake sealing properly... Yes the TA composite gaskets are best... I would mock it up and use feeler gauges to see what thickness gaskets to order. Just cut up an old valleypan to cover the bottom of the intake. Likely you will nto need the rubber on the front and rear of the intake after the milling, just "the right stuff sealant.
