Thanks all to all the posts I have read . My question is engbldr valves or si valves thanks I will be running nos 75 hp - 100hp shot like to save money but not for depedibilty or quality thanks agin

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1963 Plymouth Valiant Wagon

SI valves are good, i've used them in a very broad range of engines from BBC with .750 lift roller cams to medium duty nitrous small blocks with roller cams. They have a good selection of valves starting with just plain OEM replacement quality to severe race duty intended for high boost and high spring pressures like with roller cams. I would consider them a good alternative in a steel valve to top shelf brands like Manley or Ferrea. And their modestly priced as well.

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There's no such thing as too much cam....only not enough engine!