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Wondering what the pros and cons are of the various lifter designs out there. Flat tappet, hydraulic tappet, roller and hydraulic roller. What are the RPM limits? Are there limits to how aggresive the lobe profile can be? How often to non-hydraulic lifters need to be adusted? (assuming a...

Any contacts for a shop that can do custom cut-outs and venting in side windows?

noob question (at least on this board) on engine RPM. Setting asside the torque vs. hp debates... What are the practical limits on engine RPM? What kind of parts will get you what kind of engine RPM levels? From what I know so far.. higher rpm requires, stiffer, lighter springs to...