Hey guys..i just made a thread about a week ago about a tickin i thought was the header..not the case..I pulled the valve cover off today (passenger side) and started pulling out the pushrods to check them. The very first one (front cylinder) has a nice bend in it. So that seems to be the problem. The car still always seemed to run fine, no rough idle, no starting problems...nothing..car still ran fine. Is just replacing the pushrods with some hardended ones alright? Everything else as far as spring/rocker look good. Little wear but nothing you wouldnt expect on a 70K motor. Thanks guy!!

 

The stock pushrods are notorious for bending...well, at least the 97-98 LS1s were.... not sure about the 99s.

Probably the same issue.

 

Sounds like someone missed a shift or two . . .

I've broken at least two push rods and bent a couple too. Even broken in half there was barely any performance loss (only I could tell). It all depends on where the break is and if the valve keeps working.

 

'99s do it too. When mine was stock I did the good ol' 1-2-1 shift and bent 3 pushrods. Felt like a complete jackass too. Luckily that was the only thing I screwed up.

 

well i swapped out the passenger side..and it seemed to quiet the drivetrain down quiet a bit....Unfortunatly..theres still a tick. I cant seem to think its still possibly somewhere in the exhaust. The car runs perfect still...no power-loss at all..and no other unfamiliar sounds.

 

Can you hear it inside the car too? I have a tick I can hear inside the car with the radio off and its been driving me nuts!

 

SAME HERE! Since there was no loss in power, and it has no problems running i didnt think it was a major problem. I always thought it was just the 'ol LS1 piston slap because it quiets down after it warms up, but is still noticable at 3500+rpms! think I have the same problem?

 

yep..sure can.. im still yet to find out what it is lol

 

Check your plugs and wires. Not having a plug wire seated all the way will cause a ticking noise. I tried using some MSDs and could not get rid of the ticking despite making sure they were all seated several times. I switched back to OEM wires and no longer hear any ticking.

 

If you bent your pushrods.. most likely you bent your valves too.

 

Not necessarily. One of mine was bent really bad but the valves were fine. Now when a valve spring broke on me, well that's a different story.

 

Yea im not thinking its the valve.as i stated..the car runs/idles/gets up and goes just as it always has. No lag, roughness or anything.