SlowSS416

iTrader: (3)

just bolt ons, tune , etc

jetlag

iTrader: (32)

LS1 tap....it happens.

SlowSS416

iTrader: (3)

Call me ignorant but I have no idea what that is. Is that similar to piston slap when its cold? I know my car is a little noisy on a cold start but it mostly goes away when its warm

lemons12

iTrader: (71)

i do this all the time....

when i go to the dragstrip when i take off for my pass im usually at the first temp line..

would i do this just for the hell of it? no.. but at the track, yes..

lemons12

iTrader: (71)

all ls1s have valve train noise, if it is very quiet and youhave to really listen for it, then it isnt a big deal..

if it is loud, it could be a few things.. usually its a lifter.. sometimes its a pushrod, just depends on the problem..

SlowSS416

iTrader: (3)

Hmm...well its not really audible unles your right under car by the wheel wells like close to the outside of the wheel?...not at all really from the top of the motor

lemons12

iTrader: (71)

thats odd...


you might have a problem on your hands.... i would make sure you cant hear it from the top..

SlowSS416

iTrader: (3)

like a bent pushrod? it seems to purr from the top...could be a bad tensioner i was thinking also....how hard would it be to replace? he seems to think its made the noise the whole year hes had it, and never had a real problem. he also said the oil temp is reading ever so slightly higher

lemons12

iTrader: (71)

no, you should hear a pushrod on top... usually a problem you have uptop (ie. pushrod, spring, lifter) is no big deal.. in the bottom though (ie. rods, pistons, etc.) is where you have a big deal..

SlowSS416

iTrader: (3)

hmm....well is there a way to tell whether or not the noise is a piston/rod or just something rattling? the car seems to be running fine he says....

lemons12

iTrader: (71)

not that i know of.. you could do the old stick to the block trick..

someone else might chime in and let you know..

you could pull the covers in no time and check the pushrods/springs/lifters..

SSCamaro2000

Im not expert but both my vehicles have exhaust leaks. Is it a ticking noise from the bottom? Does it get faster when he revs it up? Just a thought, good luck.

SlowSS416

iTrader: (3)

hmm...im lost at this point....no clue. my buddy thinks its the valves, since he does have longtubes...which is a very obvious point i totally forgot about haha

SlowSS416

iTrader: (3)

he has longtubes with a full catback, but the exhaust is supposedly welded pretty well. its from the bottom, and i dont think it gets faster but i could be wrong.

NSSANE02

iTrader: (14)

If it was an exhaust leak it would probably be at the head like a bad gasket or loose header or something, not the catback.

SlowSS416

iTrader: (3)

I'm leaning towards noisy valves because of the longtubes....thoughts?

NSSANE02

iTrader: (14)

I would check for an exhaust leak since it's the easiest and most obvious to find, then go from there if thats not it. Honestly though if it's not too loud I wouldn't worry about it, both of my LS1's have been a little noisy and both ran/runs strong as hell

SlowSS416

iTrader: (3)

Thats what I'm thinking. Thanks for the help everyone!

Ironxcross

iTrader: (8)

its possible, i know it was noisier on my lt1.

exhaust leak is possible.

post a video of this tick or whatever it is.

GMmexican

iTrader: (7)

Once you add long tube headers the valve train noise is a little louder on our cars, its not a big deal as long as your car is running fine. Tell your buddy to be careful and let it warm up next time. Just me 2 cents