Quote:
Originally Posted by mjannusch
I was under the impression that upgraded valve springs were mandatory for any cam upgrade.
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Yeah, what I meant by stock TT heads, is they are stock valves, and 100% stock valve seats and ports. No work has been done to them. I just cleaned the seats up using valve lapping compound.
I do have 3rd gen lifters and 3SX hi rev spring kit.
I am thinking maybe the stock heads don't like the street cams. But not sure this early in the game.