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08-02-2006, 01:37 PM
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Join Date: Nov 2005
Posts: 134
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Kinda of a crappy dyno since we lost the rpm reference on this pull, but the HP numbers are there...
We had just finished up the cam, head, rocker, and injector install that morning. We dumped in a tune and drove around for 1/2 an hour or so to watch fuel trims and KR......
The tune was a ton rich up top and the first pull in second scared the sh!t out of me. The truck was bucking so hard from 4000 on out I thought it was going to break loose from the dyno... and BTW, I was in the back seat logging with HPT.... 
It took six pulls to get fueling leaned out enough up top to get rid of the bucking, and this is the dyno sheet from Vinci High Performance. We lost the RPM reference on this log but the prior one showed 480 ft/lbs @ 3800 rpm and peak power of 480 rwhp and it was still bucking due to the rich fueling...
Anyway we quit on this pull even though we were still rich... because you can see on the dyno it had already climbed to 93* outside. Since then, I have added e-fans and retuned the truck to about a 11.6 AFR up top....
This thing is fun for a 6000 lb beast....
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2004 Nekkid Z71 Avalanche with increased traction, enhance aerodynamics, and upgraded airflow.....
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08-02-2006, 02:27 PM
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Site Supporter
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Join Date: Jun 2004
Location: fal texas
Posts: 3,182
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all i got to say is...SWEET!!!!!  damn good numbers there for shure 
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'08 trailblazer...stock
'07 gmc cc z71 stock
Nelson performance SD tuned '04 excab, 6.0,Nelson performance front mount turbo with mpt-76 turbo, gt2-3 cam, 4l80e tranny , circle D stage 3 1-a converter , 05 efans and radiator , 160 t stat , ultra 9 x 18's with 32'' kuhmos , addco front and rear sway bars , 14" big brake kit and some other goodys...550/550 power
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08-02-2006, 02:29 PM
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Join Date: Nov 2005
Posts: 134
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Hehe.. it all started because I wanted to pull a boat..... 
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2004 Nekkid Z71 Avalanche with increased traction, enhance aerodynamics, and upgraded airflow.....
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08-02-2006, 03:10 PM
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Join Date: Nov 2005
Location: ohio
Posts: 1,712
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Holy Shit !! that is some power. What size engine and did you forge any of it?
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 07 SILVERADO CLASSIC 2500 HD 4x4 CREW CAB LT3 DURAMAX LBZ/ALLISON 6 SPEED 5'' MBRP Turbo back exhaust 6'' TIP /NO CAT- NO MUFF/ AFE Intake/ EDGE HOT JUICE / MERCHANT AUTO STG III Built Allison/P I ConverterTTS Twin Lift Pumps. Tierod sleeves/Cognito braces.17x9 Moto metals_______ Old Truck ,04 Z-71/Turbocharged,/cam/stall/Zippy Built TRANS/Nelson Tuned------
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08-02-2006, 03:20 PM
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Senior Member
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Join Date: Mar 2006
Location: Dawson Springs KY
Posts: 254
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<div class='quotetop'>QUOTE(Tim Z @ Aug 2 2006, 03:10 PM) [snapback]59719[/snapback]</div>
That is on a stock 5.3 bottom end.
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02 Avalanche Z-71 Vortech supercharged 3.12 pulley 10psi, SMC meth injection, 3"body lift, 33 12.50-17 procomp AT, 17x9 procomp wheels, AVIC-N2 NAV, 4.56 gears, Detroit TrueTrac, 2500 stall converter, transgo HD2 shift kit, Vette servos, 80mm BBK throttle body, Edelbrock shortie headers Cold Fusion wet shot (60hp), and too many more mods to list.
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08-02-2006, 03:42 PM
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Join Date: Mar 2006
Location: Dawson Springs KY
Posts: 254
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Come on FlaBouy, don't start a thread and make me answer all of the Vortech questions.
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02 Avalanche Z-71 Vortech supercharged 3.12 pulley 10psi, SMC meth injection, 3"body lift, 33 12.50-17 procomp AT, 17x9 procomp wheels, AVIC-N2 NAV, 4.56 gears, Detroit TrueTrac, 2500 stall converter, transgo HD2 shift kit, Vette servos, 80mm BBK throttle body, Edelbrock shortie headers Cold Fusion wet shot (60hp), and too many more mods to list.
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08-02-2006, 03:42 PM
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Senior Member
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Join Date: Nov 2005
Location: ohio
Posts: 1,712
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<div class='quotetop'>QUOTE(KY_BOB @ Aug 2 2006, 04:20 PM) [snapback]59721[/snapback]</div> that's what im talkin bout!!! 
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07 SILVERADO CLASSIC 2500 HD 4x4 CREW CAB LT3 DURAMAX LBZ/ALLISON 6 SPEED 5'' MBRP Turbo back exhaust 6'' TIP /NO CAT- NO MUFF/ AFE Intake/ EDGE HOT JUICE / MERCHANT AUTO STG III Built Allison/P I ConverterTTS Twin Lift Pumps. Tierod sleeves/Cognito braces.17x9 Moto metals_______ Old Truck ,04 Z-71/Turbocharged,/cam/stall/Zippy Built TRANS/Nelson Tuned------
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08-02-2006, 03:59 PM
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Senior Member
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Join Date: Nov 2005
Posts: 134
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<div class='quotetop'>QUOTE(KY_BOB @ Aug 2 2006, 03:42 PM) [snapback]59723[/snapback]</div>
Damn I go to lunch and the girls come out to play......Story of my life
Quick answers till I read through all the post.....
Stock Bottom on a 5.3L and a pure 12 psi... I installed a 2 BAR MAP sensor and it read 185.35 kPA yesterday in 110* heat...
0-60 in about 5 seconds....
This thing is not an intercooled kit... Intercooler is on the way... I rely on a 50/50 mix of meth....
The pulley is three sizes down from stock... the secret in my truck is the cam/rocker/head combo....
What else..?
BTW... those numbers were taken on Feb.22nd.... I have done a lot of tuning since then.....
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2004 Nekkid Z71 Avalanche with increased traction, enhance aerodynamics, and upgraded airflow.....
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Linear Mode
