2000 Silverado 5.3 Piston slap. Rebuild? or replace

:banghead: I have a 2000 chevy silverado with a 5.3 and have the typical piston slap in this motor. Thinking about a performance rebuild. Truck itself is in excellent shape. Any suggestions comments or advice from anyone would be appreciated. Such as which way to go, parts, or even if its worth it?

:banghead: I have a 2000 Chevy silverado with a 5.3 and have the typical piston slap in this motor. Thinking about a performance rebuild. Truck itself is in excellent shape. Any suggestions comments or advice from anyone would be appreciated. Such as which way to go, parts, or even if its worth it?

A lot of them have the cold start piston slap noise but they run a long time like that.
Sometimes a good AC-delco oil filter also helps on start up noise.
I would live with it as long as it runs and gets half way good gas mileage.

A performance rebuild gets expensive and may lower gas mileage.

But it is your choice or what you want.
Good luck.

MT-2500,
I do appreciate your response but I think you missed the point of my question. I'm interested in a rebuild or replace not wether or not the original is going to last or not. When I said even if its worth it, I ment the 5.3 block

Look into a reman over a rebuild.Reman engines are cheaper than rebuilding with a better warranty.Jasper is one choice,with a 3 year,100,000 mile warranty and probally cheaper than a GM reman.Jasper does upgrades to the pistons and the piston rings on the 5.3 which are a common problem.

GM offers a performance 5.3 engine that may be what you want. Look at their performance catalog. Sorry but I don't remember the specs on it.

:banghead: I have a 2000 chevy silverado with a 5.3 and have the typical piston slap in this motor. Thinking about a performance rebuild. Truck itself is in excellent shape. Any suggestions comments or advice from anyone would be appreciated. Such as which way to go, parts, or even if its worth it?


I think that spending money to increase performance on this design is a waste of money.....


piston slap is caused by carbon.....in the rings....it should only slap under load when cold synthetic oil helps reduce this...if you find your losing power and mpg is low replace O2 sensors if over 100,00mi and have cat checked for restictions in exhaust.........

:banghead: I have a 2000 chevy silverado with a 5.3 and have the typical piston slap in this motor. Thinking about a performance rebuild. Truck itself is in excellent shape. Any suggestions comments or advice from anyone would be appreciated. Such as which way to go, parts, or even if its worth it?

I had the same problem,I just replaced the oil pump pick-up o-ring and replaced the oil pan gasket applying copper silicone sealer to both sides of gasket and allow 24 hours to dry no noise at ALL.The oil pan gasket is junk the rubber shrinks and you have only metal to seal and your oil pressure goes through the gasket twice on the way to your bearings ,lifters,etc.

Welcome to AF on your first post.

This is a old post always check date on post and if old let old dogs sleep.

As to the information you gave oil pressure does not have anything to do with piston slap.
The piston slap on the motor in post is cause by low skirted pistons that allow piston slap cold.