> Yeah the Hall shop was the offical rebuilder of the chevy engine package
> weren't they? Rebuilts had a reputation of just a tiny bit more power than
> the new blocks fresh from the factory.
when the engine had a few miles on it, everything seated a little
better, and then you put a new head on it and suddenly you got a small
HP bump. He did that on a few races, when he thought he needed more
power (which, for Mark, was ALWAYS). :-)