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Got my truck Dyno'd - XR265HR

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Old 04-28-2007, 02:49 PM
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Thumbs up Got my truck Dyno'd - XR265HR

I got my truck Dyno'd. It did what I expected and I am very happy with the results. Please keep in mind im rolling on 35" tires and im a 4x4. The tires caused the "low" numbers and the graph to be wavy the way it was (did not do to much smoothing). Everyone in the dyno bay was kind of scared to be in there while I was dyno'ing At the top of third gear the dyno read I was doing 160mph lol

If was on stock tires the numbers would have probably been over 300/300. Next I am doing some small mods hoping to reach over 280 hp and over 300 ft/lbs. Under drive pulley and ported TB any other suggestions?


combo:

XR265HR 212/218, .522/.529, 114LSA, Pacesetter LT's & ORY, Intake, Gibson catback. Custom tuned by me with the help the mods of hptuners message board, 12secSS, and my buddy.

notice the torque curve

272hp, 295tq

Old 04-29-2007, 01:22 PM
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Excellent results! AFR is dead on! Did you have time to play with the timing, that is all I need to do with my truck to extract more power out of it. It might not be much, 5hp about. Either way, great results, I love the flat torque curve from 3200-5200 rpms.
Old 04-30-2007, 10:22 AM
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Not bad for $120 cam shaft and free ls6 springs huh?

Timing was 28* total at WOT.

I was hoping for 280hp+ and 300Tq+. What little modifications do you recommend to get there? I was thinking under drive pulley and ported Tb. What else do you think?
Old 04-30-2007, 04:55 PM
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Good numbers! I'm surprised you didn't throw a driveshaft...
Old 04-30-2007, 05:58 PM
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160mph on 35s, with stock driveshaft , no thanks
Old 05-01-2007, 11:04 AM
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I have mad driveshaft skills.
Old 05-01-2007, 04:47 PM
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congrats!
the rollers don't care what size tires you're on so they don't matter
pull it in 2nd next time- 3rd is ridiculous- it'll show like 160mph which aint real

damn good lookin truck!
Old 05-01-2007, 06:41 PM
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Looks good
Old 05-01-2007, 06:59 PM
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Originally Posted by .T.
congrats!
the rollers don't care what size tires you're on so they don't matter
pull it in 2nd next time- 3rd is ridiculous- it'll show like 160mph which aint real

damn good lookin truck!
2nd? 0rly?
Old 05-01-2007, 07:14 PM
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Originally Posted by 86MC_SS
2nd? 0rly?
Yup, second. See all that crazy vibration in your graph? Your tires and driveline are being waaayyy over rev'd and shaking while you're pulling. You're seriously lucky you didn't lose your driveshaft.


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