piston slap?

[kitchen]

I have got a heavy ticking coming from the bottom end on my ls1. ive been told its piston slap but im not sure. it gets quieter once it warms up, but i can still hear it even then, and it speeds up the higher the rpms go. any idea on what i can do to fix it? because i wanna get some work done, but i dont know if i have to replace the block or what. can it be bored and put tighter fitting pistons and rings in it? any help would be greatly appreciated!

[c0ncEpT]

Its normal. Don't worry about it.

[98blackbeauty]

To fix it you have to tear down the engine and mic out the cylinder walls and pistons. If its the piston skirts they can be replaced without a bore and new pistons. Usually the fix is a bore and new pistons though, because the slapping around causes egg shaped cylinder walls. It will eventually get worst especially if you drive and start in real cold weather.

[kitchen]

can a ls1 be bored though? ive heard it cant because the cylinder walls would be to thin

[kitchen]

and what can it be bored to?

[98blackbeauty]

Don't know???????????????????

[kyleozzie]

ls1 can only be honed. i believe.

[SSTODD]

Try a good oil 10w-30 and a good filter with the proper anti-drainback valve to monitor the noise level change if any. What are the miles and mods? I believe you have the common "piston-slap" and it causes no harm, after warm-up being less is usually that.

[1bad83ta]

LS1 motors have a steel sleeve. If you plan on boring it I believe you would have to have the block re-sleeved. (i think this is the case)