6.2L Silverado extcab, 2wd - SilverSleeper

[farmtruc]

Kevin's truck laid down some good numbers!

398.9hp and 394.9tq with just a NP Tune, no cats, magnaflow muffler. (stock cai/filter)

That was just the street tune, we all know we can get more on the dyno, not because the dyno is better to tune with, but because less load can be applied, more timing can be had, etc etc.

Gonna break 400hp real quick with a stock engine and then we're installing this:

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[Botlfed]

Sweet deal, wish i could break 400.

[pl4yboy]

Those are the highest numbers I've seen out of a 6.2 yet for being that stock. Too bad I'm already at 500 eh?


Just giving you hell Kevin. Good numbers for sure.

[farmtruc]

just found out, has a 90mm tb too.

[farmtruc]

adjust a/f ratio and timing.
405/393 final numbers.
ran it twice back to back.
IMG_9476 (Copy).jpg




here's the first dyno pulls, did three back to back.
IMG_7069 (Copy).jpg

[CHEVROLADE]

damm thats nice...in for some results after intake swap

[Crazy Blu]

Hell ya this thing is going to be sik!

[GMCwantsLS1]

Nice job! Kevin that is one hell of a setup over 400 hp NA!

[double047]

Hell yeah, look at that beast laying it down on the dyno, them dynos are so cool, I always love to see everyone's dyno #s.

No wonder she's been running low 13s in 100+ degree heat with a race weight over 5000+ lbs.

80 to 150 pulls are fun in the Sleeper, top speed has been 154 so far.

***Those #s though, WOW, are you guys sure you didn't already install the top secret NP grind cam and forgot?

[pl4yboy]

Just out of curiosity, what happened to the CAI you had? I thought you had that on there. I'm still interested in owning it.