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OVee the weekend I snapped a valve spring on deceleration at 2k RPM. Only 4K miles on the springs and the entire engine itself. Any causes that could have snapped it other then part failure? Seems rather odd...
Maybe it's a trick of the camera angle, but I don't think they look like a matched set. I think I'm seeing at least two - possibly three -- different springs.
My first thought was comp 918 on reading the title, but those don't look like comp 918 at all
Dont mess around with iffy springs. Iffy you dont know? Change em all. Most serious guys change em every year anyways. Cant go wrong with fresh valve springs. I have no clue what those are either. I too think they look mismatched and a couple look like PG with the inner removed. Call PAC, give them your cam spec, get a new set. Verify preload and order pushrods if need be. 0.050" is a nice safe pre load if your gonna beat on it. My first LS1 still tickin with that pre load and it gets run to hell
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Snapped a valve spring, what brand are they? 
