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4.8L gained 15HP 99 to 00 - what was changed?

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Old Apr 25, 2002 | 03:39 PM
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Default 4.8L gained 15HP 99 to 00 - what was changed?

What was changed in '00 when the 4.8L gained 15HP?
I tried doing a search and saw someone imply it was the cam. Is that true? And if so, is that all?
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Old Apr 25, 2002 | 03:47 PM
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Default Re: 4.8L gained 15HP 99 to 00 - what was changed?

That's true and that's all.
Crank HP:
99 4.8=255, 99 5.3=270

00+ 4.8 = 270, 5.3=285
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Old Apr 25, 2002 | 05:12 PM
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Default Re: 4.8L gained 15HP 99 to 00 - what was changed?

ummm.... PCM tuning is different on them as well.
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Old Apr 25, 2002 | 06:49 PM
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Default Re: 4.8L gained 15HP 99 to 00 - what was changed?

oops, your right. Tuned for the cam. My Bad. <img border="0" title="" alt="[Embarrassed]" src="gr_emb.gif" />
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Old Apr 26, 2002 | 12:04 AM
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Default Re: 4.8L gained 15HP 99 to 00 - what was changed?

yeah in 2000 the 4.8 and 5.3 both got the 6.0 cam.
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Old Apr 26, 2002 | 02:50 PM
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Default Re: 4.8L gained 15HP 99 to 00 - what was changed?

Thanks for all the answers. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Is there a tutorial somewhere with lots of pictures showing how to change a cam without pulling the engine?
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Old Apr 26, 2002 | 03:51 PM
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Default Re: 4.8L gained 15HP 99 to 00 - what was changed?

http://www.torquecentral.com/mods/GM...ll/default.asp

its for fbodys, but close enough, pretty much same thing <img border="0" alt="[Burnout]" title="" src="graemlins/burnout.gif" />
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