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Made 668rwhp on only 12psi

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Old Oct 14, 2011 | 02:19 AM
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Default Made 668rwhp on only 12psi

So my tuner called me at 3pm and told me that they had the truck up on the rollers and they were currently making 668rwhp / 637rwtq at 12lb of boost, no meth on 91 octane and the dyno room temp was 105 degree. Motor is a built 370 with a GT-42 Single Turbo. They asked me if I wanted to keep going and turn up the boost some more and start tuning with meth and I told them no, it was not necessary.
Reason being is that I'm actually really pleased with those numbers for right now, and I'm at the point where traction is an issue and not power. I also really need my truck the next few days.
So once the weather cools down a bit more, I'll figure I'll put her back up on the dyno, add a few more pounds of boost, add in the methanol and see what the truck will do in cooler weather. My guess is low 8xx's.

Here's the dyno sheet:
580+ ft/lbs from 3750 - 6000 rpm's is fun!!




Also...when I first brought them the truck they threw it up on the dyno just to see what's what and it was determined that on 5 cylinders at 7.5psi the truck was making 321rwhp!! That's what I was competing with at the Truckin Competition!



So anyways, trucks' back home and I unloaded my bike out of the back and took the truck out for a test spin finally and it is a whole lot of fun! I've only done a few pulls in first and second gear but once she hooks she pulls really hard!
If I get a chance I'll see if I can't get some vids next week.

Here's a pic of my truck...


Last edited by Spoolin; Oct 14, 2011 at 02:25 AM.
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Old Oct 14, 2011 | 02:36 AM
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Nice numbers!
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Old Oct 14, 2011 | 06:30 PM
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makes me wish I did not sell my 00 silverado!!!Congrats on the results and beautiful truck!!!
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Old Oct 15, 2011 | 12:37 PM
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Thanks guys, I'll try to get some video's up this upcoming week.
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Old Oct 15, 2011 | 07:35 PM
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Great results, I like how you did that picture too, how'd you do that, make it look like a painting?

Is that a 74mm 4202? Real nice power on relatively safe psi! Good work!
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Old Oct 16, 2011 | 12:03 AM
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Originally Posted by Hank Peabody
Great results, I like how you did that picture too, how'd you do that, make it look like a painting?

Is that a 74mm 4202? Real nice power on relatively safe psi! Good work!

A friend on here is a picture nut and he edited the original picture in photoshop I believe to make it look like an oil painting. I love that picture too!!

It is in fact a 74mm 4202 turbo. I think it should be good till about 850rwhp at which point I think it will be maxed out. At which point I'll see about getting a bigger one!!
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