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So Denny What I'm getting from that is that the double vlave springs don't have to be used because of a bigger cam, only if theres a blower involved. Will do some more research on it. Thanks

Yep a 51 ford engine.

Thanks guys for the info. Always nice to get replys on something I need to do but never done it before.:)

On previous installments of valve springs I have used single springs but this last time because of the cam, we use dual. On single valve spring installment we pre-assembled with the valve and valve...