5.3 Liter Aluminum Block

- D
- diablo
  
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posted
17 years ago

Mon, Jul 17, 2006 1:10 AM

Looking for information on the 5.3 liter aluminum block that came in my 2006 Silverado. Is the cylinder surface of these motors a cast iron sleeve or is it a Nikasil plated bore?

Thanks, Brian

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- S
- Steve Mackie
  
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posted
17 years ago

Mon, Jul 17, 2006 2:09 AM

The cheaper of the two.

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- William H. Bowen
  
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posted
17 years ago

Mon, Jul 17, 2006 3:01 AM

Brian,

A cast-in cast iron sleeve: same technology used on the NorthStar V-8. GM learned its lesson on treated aluminum bores with the Vega

4-cylinder 30+ years ago.

Regards, Bill Bowen Sacramento, CA

- D
- diablo
  
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posted
17 years ago

Fri, Jul 21, 2006 11:15 AM

I thought that it may be the cast in liner, and am glad that it is.

Brian

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