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5.3 LM7 Dyno Results

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Old Jun 4, 2008 | 08:12 PM
  #1  
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Default 5.3 LM7 Dyno Results

I dyno'd my pickup today at Strictly Performance (Yeah, it's a 'stang shop) to see where things stand -
Originally Posted by see mods in signature
2005 GMC Sierra CrewCab. Wheatley Tuned, Supermaxx LTs w/ Hi-Flow Cats, Corsa Cat-back, Outlaw Intake, Transgo HD-2 Shift-Kit w/ Sonnax Billet Servos, 40k Tru-Cool. Mods-to-Come: Comp 212/218 Hi-Lift 115 LSA & Losing G-80 for Tru-Trac
. Pulls were done on a Dynojet @ 95F at about 96% humidity in Houston. Richard at Strictly Performance said I was running a little rich and could get a few more horses leaning up a little. Based on my mods and such what do you guys think?

Pulls were done in 3rd gear. I have 3:73 rear end.

I have a Comp 212/218 115 LSA Hi-Lift Cam - Patriot Gold Spring Kit - Hardened Pushrods to add this summer.

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Last edited by trever1t; Jul 12, 2008 at 04:59 PM. Reason: Sig added to body of text
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Old Jun 5, 2008 | 02:44 PM
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I hate it when they put speed across the bottom instead of RPM...

Did they apply any weather correction?

My stock 05 LM7 put 255hp to the wheels but only 274tq in a 2nd gear pull.
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Old Jun 5, 2008 | 03:36 PM
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I don't believe there was any weather correction. The pulls were done in 3rd gear. The guy running the dyno commented on how hard my truck shifted even though I installed the Transgo with the softest settings. Charlie Wheatley is looking at the A/F ratios and I'll likely get retuned. Once I get that done I'll go back and redyno. When I do that I'll see if they can put RPMS on the scale instead and weather corrrect, etc.

I saw your dyno curves, you pulled more horses with just a muffler, filter and tune.
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Old Jun 5, 2008 | 05:24 PM
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I was also on a Mustang Dyno
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Old Jun 5, 2008 | 05:40 PM
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COT is kicking in,lets take care of that next week
I will email you
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Old Jun 5, 2008 | 05:50 PM
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COT?

Oh yeah, I looked at my sheets and it WAS on a Mustang Dyno, but it was set to print out DynoJet numbers.
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Old Jul 12, 2008 | 02:19 PM
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Originally Posted by AdioSS
COT?
Cat
Over run
Temp
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Old Jul 12, 2008 | 03:23 PM
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Wheatley, how can you tell that?
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Old Jul 12, 2008 | 04:57 PM
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v8
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he looked at the tune again and noticed it, I bet thats how haaha

and cat over temp is set to a certain afr to go to if cats over heat, it has a min and max setting unless you have them turned off for off road use only.
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Old Jul 12, 2008 | 07:24 PM
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wow i think there is still alot left in the tune...
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