IRONFIST

Well my options are, either pulling out the broken pushrod, replacing, and starting it up. OR pulling the head, and see if theres anything else wrong.

Now I am very mechanically inclined, so putting it all together, and then ripping it all apart again, really isn't a big deal to me. But I don't want to replace the push rod if the odds are that theres something more serious wrong? What would have caused this pushrod to break? The rest are fine? The engine is stock, has a stock rev limiter, although I do push it at the track every once in a while.

Here's some pictures :

cellulis44

iTrader: (11)

replace pushrod... go from there

EDIT: with aftermarket so you dont have this problem again...

mvvette97

iTrader: (18)

Like cellulis44 said, just replace the pushrod and you should be good to go. Things break every now and then. I've seen this happen before for no real reason.

beezer1519

iTrader: (19)

congrats on it not doing much damage to your head i've seen some f'd up pushrod guides to bent/broken pushrods if you really wanna be on the safe side take it apart and make sure everything is good to give you that piece of mind but if you collected both pieces of the pushrod and it doesn't look like it's missing a big chunk i'd probably run it like everyone else has stated

melchoir

iTrader: (4)

Similar thing happened to me before I put a cam in. 1 Broken pushrod, and a nicely bent one too. Just replaced and kept on trucking. We had to use a magnet to pull out the small remaining piece of the pushrod.

99_Z28

iTrader: (3)

Oh snap! That happened on a stock motor and rev limiter? Im glad I have a set of comp cams pushrods coming. Putting on some ratio rockers also. I would just upgrade instead of just replacing that one. I only paid $92 shipped for the comp cams pushrods off flea bay....

utahws6

iTrader: (11)

whats the possibility valve springs are getting worn and causing valve float?

AutomagicLS1

iTrader: (18)

Replace the pushrod and disconnect your coil packs when you put it back together. Put a high powered battery charger on there and crank it over. If its not making any noise then give it hell

2002 SS HUGG

At least you diidn't break it....that could have been nasty. Even though the LS1's can take years of abuse compared to other vehicles....the pushrods are not made from chromeoly material. I would recommend aome 7.4 chromeoly pushrods, even you don't wanna mod it out...one of thr best upgrades are the hardened rods. Get some. lol

JFM-jr

iTrader: (23)

Did you retrieve that piece of the head that appears to have broken off around the edge of the pushrod guide? That would determine wether or not I'd pull the head off.

1BADAIR

iTrader: (1)

NOOOOO
don't use stronger pushrods with stock spings. if the valve hits the piston with upgraded rods it will cause more damage than just a pushrod

f-bodyguy

iTrader: (9)

very true ill sell you some stock push rods with 66xxx miles on em

stlcamaros

If he gets the same length it isn't an issue.....

1BADAIR

iTrader: (1)

length isn't the problem. ls1's are known for the valves hitting the pistons.
when this happens with stock pushrods the pushrods bend and normally don't hurt the valve. when you upgrade the pushrod it no longer bends and the valve/piston get hurt.
The whole problem is weak valve springs. If you upgrade the springs this problem doesn't occur

Jdilz

What do you mean by big chunk? I rescently broke a push rod on my l99 from an over rev.. what is your advice? I am getting a full valvetrain rebuild. From the cam/ lifters and up.. should I be worried about any of the fragments that broke off of push rod? Mechanic was able to retrieve 99% of push rod but there is still those little fragments

G Atsma

Beezer1519 hasn't been here for over 10 years.
Check post dates, especially if nobody has updated the thread in a huge amount of time like this one.