Sure, loner, you can bolt any SBC head on the motor that you want to, but if this is gonna be a street motor to be operated on pump gas, you want to keep the static compression ratio low enough so that the motor won't detonate (ping) on pump gas. Of course you can also use a cam with a later intake valve closing event to bleed off some of the compression, but then you also have moved the operating range of the engine up higher in the rpm range and away from streetability. 9.0:1 is a generally accepted limit for iron heads, although I've seen fellows run as high as 11.0:1 with a good tight squish. Personally, I'd shoot for somewhere between 9.0:1 and 9.5:1 with a 0.035" to 0.040" squish. That's the dimension between the top of the piston crown and the cylinder head at TDC.

If you use heads with a smaller chamber such as the 64 cc units, you'll also have to use dished pistons to keep the c.r. relatively low. For instance, a 0.030" overbored 350 with 64cc heads, stock-type flattops, zero deck and 0.039" gasket, will yield a c.r. of 10.56:1. You'll want to match the cam to the c.r., so you would install a more agressive grind and move the effective power higher up and away from streetability. Now of course you could do that and get away with it by running a converter with a higher stall, but there are other things to consider too, like manifold vacuum to operate brakes and such. The more cam you run, the lower the vacuum.

For a good solid street motor, keep the c.r. around 9.0:1 and use a mild cam.

So, your choice is either large combustion chambers with flat-tops or small combustion chambers with dished pistons.

If you want to bone up on c.r., see this paper I wrote:
http://streetmachinesoftablerock.com...opic.php?t=124

To bone up on cams, see this one:
http://streetmachinesoftablerock.com...topic.php?t=78