Guys who daily drive aggressive cam setups - Valve spring longevity?
 

Any hard data on this?

What kind of mileage are people seeing out of some decent beehive springs with close to .600 lift cams?

IS there a rough mileage estimate on when to replace a whole set of valvesprings? (i.e. every 50k miles?)

i was told 3years, 36,000 for pac/comp beehive. i see 50,000 out of duals and .600 lift. the closer you get to the max lift the sooner you need to change springs, just to be safe. My buddy has a cam that almost maxes his PRC extream duals(.670ish), and he said he will change them at ~20k.

I wouldn't go over a year/18k-ish on beehive with .600 lift.

We'll mine have been on the motor since June of 08, first with a .53X cam, and now a .588 cam for quite a while.

That's cool man. I was in the bad batch of Comp 918s and blew my sh** up, so I play it extra safe. I run duals now and replace them every 18 months.

I change them once a year.

There was a thread on Tech a while back . . .

both cars (LS motors) put about the same mileage on different cams over a year.

one had the revised 918s (cam under .600) and the other had the dual golds (cam over .600).

The 918s had lost more seat pressure vs the duals. Both drivers admitted that they both drove aggressively, stop and go traffic, and the occasional road trip.


I made a post just like this a while back on tech and on here . . . driving habits, duration/lift, bla bla . . . bla .bla . . . . lots of variables. Most of if not all of it is just hear say unless someone has the data to back it up.

I have 50k miles on patriot golds duals with the cam in my sig.

I've had the same set of 918 beehives pushing .550" lift on my Vortec headed SBC daily driven since Sept '08

I would change those springs scott! 2 years and butt load of racin'. to cheap not to. SDPC has the pacs for under $150 still I think.