In the process of my 302 rebuild, from an 87 roller 302HO we ran into a few "issues". Firstly, my dad didn't want to change to serpentine belts, and therefore did not want to change the balance to 50oz. So he got the brilliant idea to use a early 302 crankshaft and keep it 28oz balance. AFTER he gets the balancing shop and machine shop stuff almost done, he decides that I should "ask those guys on the internet" about using an early crank in a roller block. Are we going to run into any problems using a roller camshaft and valvetrain on an early 28oz crank/flywheel? We've already got the parts nailed down, he thinks this special flywheel and clutch he got is going to work .. but just mechanically .. is there any reason the type of camshaft would mess with the balance or vice versa?