LS1 piston slap/build or no build?
Thread Starter
Staging Lane
Joined: May 2009
Posts: 81
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LS1 piston slap/build or no build? Well I thought I had a lifter tapping on my 99 Camaro SS, so I bought a cam kit and was planning on that being the fix to the sound I was hearing coming from my motor. Now after doing some reading on the net it seems that I was wrong and I may actually have piston slap and not lifter tap. I bought the car with the intention of having fun at my local 1/4 mile track. I would hate to install the cam kit and the motor come apart on me.
The cam kit is a Comp Cam, 232/234 duration, .595"/.598" lift.
My question is this: Do piston slap motors have any history of committing suicide under regular thrashings? Or is it OK to proceed as normal?
The cam kit is a Comp Cam, 232/234 duration, .595"/.598" lift.
My question is this: Do piston slap motors have any history of committing suicide under regular thrashings? Or is it OK to proceed as normal?
Considering these engines slapped at the dealer when new, I'm sure you will be fine (given you don't have a ton of miles). If you have a bunch of miles and have time and the money, a rebuild wouldn't hurt.
12 Second Club
Joined: Mar 2009
Posts: 196
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From: deer park (houston area)
yea i had read in another thread about the ls1 motors having piston slap when the motor is cold...... and the noise coming from his motor I not that loud, you can barley hear it and when it warms up the noise goes away
Last edited by allenwesley; May 17, 2009 at 06:00 PM.
TECH Regular
Joined: Jan 2008
Posts: 458
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From: Bellaire, TX
I dont know what you what to call it or what it is but mine has a cold starts tap/click/knock untill it warms up and its gone. The car has 70k miles on it and i've had it for 2+yrs. It made the same noise from day one.
Even had a 150 shot on it for a year with 4 bottles ran on it. Still runs strong.
Even had a 150 shot on it for a year with 4 bottles ran on it. Still runs strong.
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Thread Starter
Staging Lane
Joined: May 2009
Posts: 81
Likes: 0
Thanks for your responses. It is very unsettling to have this constant dull knock under the hood. I'm going to go ahead and install the cam kit. Actually, I'm also putting on Hooker headers and yanking that 6 speed out and putting a TH 350 with 3200 stall too.
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