GMT 900 Trucks General Discussion 2007 - 2013 Trucks | General Discussion

4.8 is getting better!!! lol

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Old 03-01-2012 | 05:44 PM
  #21  
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Gonna see how the gmt900 4.8 likes an 80mm on top of it here in a couple weeks...
Old 03-01-2012 | 08:15 PM
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@ smokeshow...What are the benefits of a larger intake manifold to where I'm at now? Would it be beneficial to swap ... What would I gain or lose?

Last edited by youngone2011; 03-02-2012 at 05:32 AM.
Old 03-02-2012 | 03:15 AM
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Yeah u should be getting better times... My best time 9.6 on my heavy stock 20 275/55/20... Like u said maybe a tune for smaller tires u should see easily like 8.7-8... Also u have bigger gears
Old 03-02-2012 | 05:22 AM
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I also have really high IATs that I believe are killing power, so I am probably gonna start pulling my headlight
Old 03-02-2012 | 08:59 PM
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What the spec on the cam??
Old 03-02-2012 | 09:16 PM
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Tsp 220/220 .581 .581 112lsa
Old 03-04-2012 | 10:20 AM
  #27  
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I'm goin back today with my slicks !!!! I'll post it up this evening
Old 03-04-2012 | 10:40 AM
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Originally Posted by youngone2011
I'm goin back today with my slicks !!!! I'll post it up this evening
cool lets us know as ssoon as u get ur time slip lol i wanna know too
Old 03-04-2012 | 06:57 PM
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8.7 at 81 with a 1.9 60' and also I had my 20's on the front ... And my truck was freaking out when I went to slow down ... Is that normal with 26" tires on back and 30" on front ...
Old 03-04-2012 | 07:41 PM
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8.7 in the 1/8th is about a 13.62 in the 1/4th. Is the slicks the only thing you changed vs the run in the first post?


Quick Reply: 4.8 is getting better!!! lol



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