820 rod upgrade

[ted johnson]

Well, the new USMP single ring piston is worth several hundred RPM, and USMP sells it as a combo deal with the good rod. 820's all suffer from a lack of breathing, so any good dual carb manifold is a good idea. It's a major improvement to drill and tap your flywheel for a puller. The old whack and pry method of flywheel removal is brutal. TJ