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Engine break-in procedure?

 
Old 07-17-2008, 05:19 PM
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Default Engine break-in procedure?

What is the recommended engine break-in procedure for the LS3?

I've always babied new cars until there is about 1k miles on them. Is this still the case? I hear different things.
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Old 07-17-2008, 05:22 PM
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your owners manual tells you all you need to know. 500 miles below 55 mph and avoid constant speeds and rpms. avoid panic stops and starts as well. just treat her nice for a little while before you rip.
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Old 07-17-2008, 05:22 PM
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GM says 500 miles no WOT, vary engine rpm's. No cruising at same speed for long. More in the owner's manual.
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Old 07-17-2008, 05:23 PM
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You could, with some nice part throttle runups to 3 or 4K rpms. However, the recommended break in, per your owner's manual, is not for the engine but for all the other components: gears, axle, shafts, etc. The other rotating parts that need to mesh.
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Old 07-17-2008, 05:27 PM
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Originally Posted by AORoads View Post
You could, with some nice part throttle runups to 3 or 4K rpms. However, the recommended break in, per your owner's manual, is not for the engine but for all the other components: gears, axle, shafts, etc. The other rotating parts that need to mesh.
But....hang around a dealership and watch how many test drive C6's and you will hope there is no break-in needed!
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Old 07-17-2008, 05:29 PM
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My method of "drive it like you stole it" has yet to let me down with any vehicle I have purchased or built .
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Old 07-17-2008, 05:31 PM
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Originally Posted by AORoads View Post
You could, with some nice part throttle runups to 3 or 4K rpms. However, the recommended break in, per your owner's manual, is not for the engine but for all the other components: gears, axle, shafts, etc. The other rotating parts that need to mesh.
I, for the most part, followed this procedure but did have a few WOT burst on highway acceleration ramps
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Old 07-17-2008, 06:15 PM
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Watch the DVD that came with the car. It will tell you that no special breakin period is needed. But, you should vary your speed, and no hard stops, because it will effect the performance of the brakes later on.
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Old 07-17-2008, 06:18 PM
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I have always done an easy first 500 miles.... Then WOT as much as you want !!!!
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Old 07-17-2008, 07:42 PM
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Originally Posted by 0to60 View Post
What is the recommended engine break-in procedure for the LS3?

I've always babied new cars until there is about 1k miles on them. Is this still the case? I hear different things.



"Break-In" recommendations from the Owner's Manual:



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Old 07-17-2008, 07:47 PM
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That's it that's all.
Originally Posted by FAÇADE-C6 View Post
"Break-In" recommendations from the Owner's Manual:



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Old 07-17-2008, 07:54 PM
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From my experience with GM cars the engine is not the main issue for the break-in procedure. It is for the rear end which tend to be weak for certain GM cars (CTS V).
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Old 07-17-2008, 07:59 PM
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Gee, I could almost stay within GM break in guidelines in FIRST GEAR!

55 MPH? Why not state it as "Do Not exceed 2500 RPM for the first 500 miles"?
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Old 07-17-2008, 08:00 PM
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Originally Posted by phileaglesfan View Post
From my experience with GM cars the engine is not the main issue for the break-in procedure. It is for the rear end which tend to be weak for certain GM cars (CTS V).
And I think the engine is already tested at the factory.
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Old 07-17-2008, 08:02 PM
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Originally Posted by haljensen View Post
Gee, I could almost stay within GM break in guidelines in FIRST GEAR!

55 MPH? Why not state it as "Do Not exceed 2500 RPM for the first 500 miles"?
An RPM restriction would make more sense than a MPH restriction.
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Old 07-18-2008, 01:02 PM
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This kinda puts the kabash on factory delivery, no? Unless you're a resident of Bowling Green...
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Old 07-18-2008, 01:06 PM
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Originally Posted by 0to60 View Post
This kinda puts the kabash on factory delivery, no? Unless you're a resident of Bowling Green...
Lot's of folks do museum delivery and drive more than 500 miles to get home. IMHO, going 65 won't hurt a thing as long as you are not going WOT to get to 65.

Last edited by RRVettes; 07-18-2008 at 01:19 PM.
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Old 07-18-2008, 01:09 PM
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Originally Posted by dpigguy View Post
your owners manual tells you all you need to know. 500 miles below 55 mph and avoid constant speeds and rpms. avoid panic stops and starts as well. just treat her nice for a little while before you rip.
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Old 07-18-2008, 01:17 PM
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Originally Posted by haljensen View Post
Gee, I could almost stay within GM break in guidelines in FIRST GEAR!

55 MPH? Why not state it as "Do Not exceed 2500 RPM for the first 500 miles"?
Because as was said above, the break in is not only for the engine, but for other geared and rotating parts, where engine RPM is not as important as speed.
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Old 07-18-2008, 01:43 PM
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55 This is going to be hard
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