Too high of lift and too long of duration can and also often ends up in bent valves and holes in pistons where they slapped the valves. What's your compression ratio and piston dome contour in relation to all of that? And again, what are you going to be doing with this engine? Breathing is always a good thing, but has to be components. And as Buick eluded to, your valve train has to be able to deal with lift. A solid and effective engine is built by matching components with each other. You ever seen that show "Pinks"? I have a couple of times, for as long as I could stomach. Forget them guys, they aren't daily drivers, and if they are, not for long. Keep it simple, make it match. By the way, those valves in those heads? I wouldn't be wasting money on lift or duration for them...they already don't match.
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Today's Featured Article - Usin Your Implements: Bucket Loader - by Curtis Von Fange. Introduction: Dad was raised during the depression years of the thirties. As a kid he worked part time on a farm in Kansas doing many of the manual chores. Some of the more successful farmers of that day had a new time saving device called a tractor. It increased the farm productivity and, in general, made life easier because more work could be done with this 'mechanical beast'. My dad dreamed that some day he would have his own tractor with every implement he could get. When he rea
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