I remember a debate about this on FordMuscle once (or twice) before...and someone brought up an interesting point that I had heard before. The timing chain is easier on the cam, apparently the gear drive, while allowing you to maintain accurate timing, transfers more drivetrain vibration to the camshaft. The chain allows a tiny amonut of flex to happen with out transfering it to the camshaft, therefore saving a little wear and tear on the valvetrain.
Some will say the gear drive also eats up a few horesepower...but so far no dyno results have been posted to verify or prove this wrong that I have seen.
Mike





<font size=-1>[ This Message was edited by: Humphrey351 on 2/18/06 10:58pm ]</font>