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18lbs on pump gas and the 4.8 is still holding

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Old Jul 1, 2005 | 08:28 PM
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Smile 18lbs on pump gas and the 4.8 is still holding

Got the boost up to 18 lb's on LTR's truck today.It wouldn't hold 18 on the dyno but it does on the street This is done with his 8.5-1 shortblock,small Cam,STS GT67,custom front mount intercooler - No Meth, 93 octain pump gas
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Old Jul 1, 2005 | 08:35 PM
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Originally Posted by Slowhawk
Got the boost up to 18 lb's on LTR's truck today.It wouldn't hold 18 on the dyno but it does on the street This is done with his 8.5-1 shortblock,small Cam,STS GT67,custom front mount intercooler - No Meth, 93 octain pump gas
more details! pics!

come on now
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Old Jul 1, 2005 | 08:50 PM
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That is just insane. lol. Wish i could get my truck to run right, i'm so jealous.
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Old Jul 1, 2005 | 09:34 PM
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Long live the mighty 4.8! A built one no less!
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Old Jul 1, 2005 | 09:42 PM
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Originally Posted by vanillagorilla
Long live the mighty 4.8! A built one no less!
Thats what I said. I wanted to do atleast a 6.0 but Matt insisted to keep it a 4.8l. It was actually more expensive to build a Forged 4.8

The truck pulled 498hp/550tq at 15lbs on the dyno,so I figure 18lbs should be 560-580hp The motor could take 20lbs but the Turbo won't push it
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Old Jul 1, 2005 | 09:45 PM
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get a bigger turbo and see how much the little 4.8 will make
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Old Jul 1, 2005 | 10:08 PM
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Get the truck to the track and get some times.
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Old Jul 1, 2005 | 10:42 PM
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Damn, thats it lol and yes get to the track. we want some track #'s please!
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Old Jul 2, 2005 | 07:34 AM
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Originally Posted by jow02327
get a bigger turbo and see how much the little 4.8 will make
We don't want it to lag anymore so a bigger turbo will have to wait. Last time at the track it ran a 13.1 at 114mph with a 2.4 60'.The truck was pushing through the beams. We've since installed a line loc and new rear brakes.Should be hitting the track next week again.
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Old Jul 2, 2005 | 08:30 PM
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god i hate my whipple more and more every day. lol
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