New guy with a high miles budget Z28.

[2002Z4CSS]

Your LS1 should be broken in with all of those miles. These engines take thousands of miles to break in. The noise you may hear may be the same ticking noise GM called normal during warm up. Most LS1s make that noise and it does not seem to effect anything.

[typedRew]

Your LS1 should be broken in with all of those miles. These engines take thousands of miles to break in. The noise you may hear may be the same ticking noise GM called normal during warm up. Most LS1s make that noise and it does not seem to effect anything.

What's the opinion of everyone on driving while it's doing that?

I normally let it warm up for 5 minutes or so and it goes away, but in the summer i'll be driving it to work and in an effort to not wake everyone up in the morning, I will be getting in and going pretty rapidly, anyone see an issue with under load use when it's slapping away? Obviously i'll be kind to it, but just curious what the consensus is.

- Drew

[pferris]

What's the opinion of everyone on driving while it's doing that?

I normally let it warm up for 5 minutes or so and it goes away, but in the summer i'll be driving it to work and in an effort to not wake everyone up in the morning, I will be getting in and going pretty rapidly, anyone see an issue with under load use when it's slapping away? Obviously i'll be kind to it, but just curious what the consensus is.

- Drew

I wouldnt worry about it. You are not going to hurt anything. Very near the same motor is in a suburban. People hop in those, and start driving stone cold. Far more load, and still no long term damage.

[typedRew]

I actually wasn't aware that engines other than the 5.7 had piston slap issues, I haven't looked around however.

Good to know.

- Drew

[pferris]

Many of these cars have had piston slap for longer than a decade(closing in on two), it doesnt seem to cause any quantifiable damage. Alot of the early ls motors had piston slap.

[DynoDave]

Many GM engines, especially those built with hyperuetctic pistons, suffered from piston slap. I was writing warranty tickets on Cavalier 2.0L engines for this 27-28 years ago. My L31 5.7L has it, my wife's 3.4L Venture has it...it's a noise GM never bothered to address back in the day. A little embarrassing, but does not seem to effect the longevity of the engine.

[typedRew]

Trans is on the floor, converter is swapped, ordering new trans line fittings before it goes back in, anybody know best place to get them?

Rockauto shows a few, but i've been screwed by them several times with poor fitting or incorrect parts.

- Drew