Purple Cam Design Question

moper said

The difference is the old grinds can make power in a fairly narrow way. You lose low end and vacuum to get horsepower. In the same identical engine, a modern cam will make the same or more horsepower, but you also get things like idle quality, no less loss of low end, and longer flatter power peaks throughout the range. MP cams also are made terribly. The QC is as good as the low bidder can get them. So overall, they work but not as well. I'll spend to get what I need for results, and the base parts mean nothing. If the cam's matched well to the parts, any cam will make power if it's made right.

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This is true! the MP grinds are far from a .904" lifter grind,if you have adcole equipment you will see this. That said they CAN work well but I haven't used them in many years. For camshafts you really should save the effort and call Tim @ Bullet cams since I don't give info from the net at this time. I did a cam last month the picked up .2 and 2mph over a shelf grind(on a customers truck) and the ignition timing was several degrees from optimum. My suggestion is don't worry about "aggressive" lobes and find something that fits the combo,too many focus on the numbers listed @.050 or elsewhere,and they mean nothing. I'm sorry if that rubs some wrong,but it's a fact.