Not Ranked
Rodger, no one said that the POP's had any problems. They only said that the POP's are close in strength or almost as strong as the Erson's. No weaknesses, problems, factual or anecdotal data were given to me to substantiate that the POP's were superior, inferior or the same as the Erson's.
How many miles do you have on your Shelby engine? Assuming that I get rockers someday, my engine will be a 482 Shelby with Edelbrock heads. My cam will have a duration of 242/248 with .618/.638 lift.
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