Turbo vehicles benefit from gearing differently than n/a or supercharged motors to my understanding. That in mind I would think taller tire = better, but I have nothing to prove it with.

 

With the super short 1st gear in the 6 speed I wouldnt think you need to go as short. I think the 1st gear in the 6 speed with 3.42's is the same as having 4.10's with the 4 speed. Also, turbo's love a longer first gear to help them load up... too short might not help you. Just a thought.

 

Who said anything bout a turbo ?

 

The O.P. asked about tires, which I took as him asking about his truck. Which happens (or at least used to be) a truck with a turbo. Click the link in his signature and the first few photos show it.

 

I ran 28" slick with 3.42.. and 31" all terrain

 

Um yes this is a turbo setup

 

it is a 6speed also?

 

Must be specific, lol. It could have been a in general question for 342's

 

Sorry for the mix up guys lol
Yes 6L80e
3.42s 14 bolt rear
Turbo setup
Smallest wheel to fit 17s
Need a hookable tire

 

What's your personal body weight?
How many ounces of fuel in the truck during the pass?
How much coolant?
What is the estimated track temperature of your planned pass?