02sunsetorangeZ

iTrader: (1)

Ok, got BTR stage 2 cam. Everything went together fine, ls7 lifters, ls2 trays. Go get it tuned, running great, 3rd pull had a bad knock at around 6k rpm. Oil pressure is roughly 50 at wot. 35 at warm idle. Runs great even when tick is present. Tick only appears when warm. Sometimes even just cruising on flat ground. I didn't measure push rods as BTR said 7.4 would be fine. They were a hair bigger than stock rods. Thinking maybe push rod too big? Any thoughts are welcome, thank you!

Undertow74

iTrader: (45)

Is it a tick or a knock, that's a big difference you mentioned that it knocked. And if you didn't measure for pushrod length, they may be to short causing your ticking. I highly doubt they are too long and collapsed a lifter. You may want to take your valve covers off to inspect and make sure everything is still tight.

02sunsetorangeZ

iTrader: (1)

i made sure everything was tight and still tick, BTR says sounds like a lifter with the oil squirting weird. just pulled head and lifters, lifters all roll smooth, #5 cylinder where the oil was weird, a lifter has a definite line on it, its smooth can't feel it though. Hoping it didn't damage cam

dogsballs

Thin oil? 5w30

02sunsetorangeZ

iTrader: (1)

yes 5w30.

02sunsetorangeZ

iTrader: (1)

i made a new thread of pictures of cam and lifters just a minute ago

dogsballs

Thats your problem

02sunsetorangeZ

iTrader: (1)

How is that a problem? Calls for 5w30? It only makes the tick when warm. I mean it was an obvious lifter tho. When valve cover was pulled I had oil barely pumping over rockers at idle and then #5 exhaust would randomly squirt on the booster. BTR said sounds like trash got in lifter causing it to do that.. Check out pictures on my other thread. I'm
Nervous the cam is bad or hurt

anheuserbusch08

iTrader: (11)

530 thins out when warmed up. **** I use 15w40 in all my ls engines, keeps everything lubed good and oil lasts longer too

02sunsetorangeZ

iTrader: (1)

5w30 shouldn't thin after being warm. 5 only represents the cold start up, should still stay the same when warm. Hell I use 5w30 amsoil on my Camaro, 82k miles runs great and engine noise isn't loud at all. Maybe I will try 10w40 in the truck after I put new lifters in

5 Liter Eater

iTrader: (5)

I Had something similar happen to me after a cam swap. Turned out the oil pump pickup o-ring was clipped when I put the pickup back on. So it was sucking in air and oil and frothing up and the first lifter to get the oil (#7) didn't want to pump up and when it warmed up it would tick pretty bad.

kingtal0n

iTrader: (1)

Yes, anytime we open the engine you run these kind of risk. I would say that if all you did was a camshaft swap, and the engine went from having NO tick to suddenly has a noticable noise, I would be on the phone with the lifter and camshaft manufacturer, highly suspicious about my new parts and such things as gaskets and small details involving oil flow, perhaps even a lodged object you overlooked. Like you said, it has 84k and should go another 84k, but any oiling problems and you run the risk of running a bearing dry or wiping a lobe and sending metal through the engine, and then its all over.

MuhThugga

No, it's not.

5w-30 warms up to a 30 weight oil. Just like your 15w-40 warms up to a 40 weight oil. Your oil just has shittier cold flow properties than the 5w does.

02sunsetorangeZ

iTrader: (1)

well, 600 miles later and the tick is back. After going up a hill and it down shifted to 5th and held up a hill. put another couple hundred on it and no tick. just comes and goes.

mchicia1

iTrader: (5)

It's the LS7 lifter inconsistent bleed down rate. Sometimes they stay pumped up, sometimes they bleed down at lower rpm causing the noise. I've had the same issues with mine which is why they're coming out for the 5315s.

02sunsetorangeZ

iTrader: (1)

So you think back to back brand new sets of rockers and it only happens on the driver side. last time i drove it, it was doing it the entire time.

Ls1N20

iTrader: (6)

I wish i could like this post, so many people don't know how to read oil weight ratings lol

mchicia1

iTrader: (5)

You mean lifters right? Yes, absolutely. Replace lifter for same lifter and expect it to behave differently?

If it was quiet and then got louder over time, it's likely the lifters. If it's quiet sometimes and louder during other times, that sounds like lifters too.

If it was something worse, the sound would not come and go, it would be constant.

For what it's worth, my G8 is exhibiting the same behavior. Some day it sounds fine, but after really long drives (hot oil), it gets very clackity.

Take a video and post it, it makes it easier to determine what the sound is.

spawne32

iTrader: (2)

You HAVE to measure pushrods. Quick way to check, pop your VC off, loosen two of your rockers that are off the cam lobe with the valve closed, bottom the rocker bolt down just until it stops, mark your socket with a line, and set your torque wrench to 22 ft lbs, you want that line to make 1 1/2 turns before it clicks.

02sunsetorangeZ

iTrader: (1)

thanks guys, i checked pushrods. they are good. I don't think its lifters, it started to do it all the time, i think it was an oiling problem.