Recently I went from Falken Wildpeak AT3 265/65/18 to Cooper Discoverer ATP 275/65/18. Tonight I went to the track to test it out to see if the truck got slower. Weather conditions were very similar which worked out perfect. I was surprised with the results.

Previous slips with the Falkens
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Time Slips with the Coopers

First pass versus a V6 Impala
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Second pass versus a mystery UTE and worst traction of the night.
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Final pass versus a 2012 Vette 6.2 with a Vortec supercharger....
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I was happy that my truck did not get slower but ran my best time along with being around 1mph faster on all three passes.

 

Awesome bro

 

Thanks. I'm waiting to see some time slips out of that truck of yours.

 

Tracks are 2.5 hrs away next closest 4 hrs. last time i went it was 3hrs got 2 runs,boost gauge in,running 6.8 lbs.Seems everyone here with 3.75 pulley runs about 10lbs. 3500 ft elevation i live at.
searching for a 3.5 pulley,should put me at 8.8-9 lbs

 

That sucks I am lucky to live near two tracks both which are an hour away. Liking the gauge you went with?

 

Like the gauge,easy to see,A pillar pretty decent piece too'

 

I like it! Looks good.

 

Does it look like to you it needs 2 more lbs?

 

It looks to run pretty damn good to me! Nothing wrong with a little more boost. I'm already at 10psi so I am maxed out with my stock pistons and fuel system. Anything over 10psi they recommend forged pistons from what I've seen. Do you know what is the recommended max psi for the 6.2 before going with forged pistons?

 

I would have to believe it would be the same as 5.3