LS BRAVADA

iTrader: (4)

Guys I've searched with no luck. I picked up my V last fall and it has 130k on the clock should I freshen up the valve springs and timing chain. Car runs flawless as of now and this would be more piece of mind I guess. Thanks

cgroh89

iTrader: (15)

http://www.tickperformance.com/tick-...r-ls2-engines/

Valve springs and a Timing Chain looks like you are 98% to the cam right

01_SuperSlow

iTrader: (7)

Do an oil pump too.
I did oil pump, timing chain, valve springs (LS9) and valve seals, and a new balancer for peace of mind last year in my LS6. It now sits at 121k miles.

BudRacing

iTrader: (3)

Only $1100 more after a tune!!

jmargo

iTrader: (10)

If you are going to leave it stock change the valvesprings as a minimum. The GM blue or yellow springs should be fine.

chitown21y

iTrader: (6)

160k here and you guys are making me worry.

VincentT

No kidding. 145K for me. It's an easy fix, but still...

Edit: Easy to replace, I should say.

COSPEED2

iTrader: (7)

As the others said. Ls2 chain and the ls6 blue or yellow springs. And possibly valve stem seals. We have the comp spring compressor tool also. It makes the job 10x easier. Some people will also put in an oil pump at the same time.

Also dont forget the balancer installer. Or a handy set of oven mitts!

ls1247

iTrader: (2)

I coming to the conclusion that the ls6 valve springs are suspect but have we seen any mileage related failures of the timing chain set or the oil pumps???

Onefast V

iTrader: (3)

Only the first/early gen LS6 valve springs have premature failures. I don't know of many/ if any newer LS6 valve spring failures on a stock engine.

BudRacing

iTrader: (3)

Valvesprings, yes. Oil pumps, not that I can think of, however I have seen some low oil pressure threads which may or may not be related. I can't think of a timing chain failure I've seen either outside of my dad's 1987 Mercedes 300SDL 10 years ago.

COSPEED2

iTrader: (7)

If you have not seen the many many threads on a stretched timing chain, you have not researched at all. And oil pumps wear just like any other engine part.

ryridesmotox

My cylinder 5 intake spring broke at 87k miles or so. Not sure if you classify that as early failure or not. To me that doesn't seem bad, almost 90k miles out of a spring. But I would expect a stock spring with stock cam and valvetrain to last a bit longer.

COSPEED2

iTrader: (7)

Honestly ls6 yellow or blue springs should not be used on anything larger than a stock cam. They sure dont have the pressure and the new blue springs have a shorter rated max lift. I would upgrade to the Pac 1218/1518 or the Manley beehives if you want a true and good long life spring. IF you are lookin at upgrading.

bmylez

iTrader: (3)

Do you bang on your car pretty hard? Perhaps previous owner did...or just a manufacturing defect.

D.K

iTrader: (1)

Though I haven't had them tested, I believe at least 1 of my stock 104K LS6 valvesprings is at least extremely fatigued. When I pulled the heads I didn't see any breaks, but the engine was displaying the symptoms of having a broken valvespring.
At 104K, there was also an extreme amount of slack in the stock chain. At least .5" of deflection.

ls1247

iTrader: (2)

I did a search for stretched timing chain in the cts-v forum and didn't come up with anything. I'll keep looking.

I haven't been into an LS but have done plenty of timing chain replacements on older GM V-8s with the nylon toothed timing chain gears that would actually jump time when the nylon wore out. This is what I call a failure and was the reason many older cars did the timing chain replacement as a preventive maintenance measure.

As far as .5" of slack, based on what I've seen in the past, I wouldn't be to worried about that and won't be digging into a perfectly good running engine unless the LS engine series has been known to be adversely affected by it.

chitown21y

iTrader: (6)

I am going to just toss some yellow springs back in and seals. Should I replace the keepers also or will they be ok? These the right seals and keepers for the ls6?

COSPEED2

iTrader: (7)

PS there is nothing different from a V and any other LS engine out there. Since they are most similar to the vettes, there are quite a few references about them stretching though.

COSPEED2

iTrader: (7)

All the cathedral ports will use the same valve stem seals along with the LS3. So yes that is the right number.