[FrankieT/A]

Originally Posted by Formulajones

A lot of things contribute to that, I hear what you're saying. The LS engines are fantastic little pieces. The rollers live for a lot of reasons.

The LS1's I messed with for several years were lucky to have 100 lbs. seat pressure on those beehive springs. They weren't much. I think the lazy stock cam profiles helped and didn't require much spring to start with. The valvetrain is pretty light on these engines too, with some of them, like the LS6 having sodium filled valves.

Even with that said, I've done cam swaps on 100k mile engines, with a custom cam, more aggressive lobes, and upgraded the valve springs and push rods to go with it, and left the original lifters in place, then proceed to log another 80k miles on the engine with a 6700 rpm rev limit set, without a hiccup, go figure.

My sons 5.0 has it's original long block (and roller lifters) now with 253,000 miles on it. Whisper quiet. Probably has 80 lbs. springs in it lol.

The rev kit is an interesting thought. I've always liked to keep the valve train light on my engines with titanium retainers and lighter valves to help with valve train stability without spending a bunch of money.

I have a 4.8 in one of my work trucks 335,000 miles never had the valve covers off. Quiet as quiet can be. It even has the factory Freon in it, but that's another story.