Quote:
Originally Posted by talos
I currently am running Edelbrock Performer Heads on my 427 side oiler, medium riser dual quads. I am switching back to Webers. The heads spring pressue is Seat/150, Open/355. They only have been ran for 4 Hrs. Can I install a new mechanical flat tappet cam without changing the springs?
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A lot of spring load without a nitrided cam and EDM lifters.
Even if you got the cam and lifters like that, you'd need to be well below those loads for break-in.