I friend of mine was trying to tell me the other night that the 6 speed cannot even acheive this speed because it would be red lining. All we have around here is a old automatic.(98.5) . Whats the rpms on the manual at 80mph, 90mph, 100mph? Oh what is the redline on the 03 and newer trucks?

 

it realy depends on the rear axel. I have the NV5600 manual and 4.10's. I can do 104 before the engine defuels mainly cause I am on the redline, however with 3.73's 114 is easily achievable

redline on the trucks differs between the years. 94-98.4 factory was set to around 3000, but you could change the springs out and get over 3500rpm. 98.5-02 was around 3200. the HPCR's (03-present) will rev unloaded to 3500, but will only spin to 3200 loaded.

 

Done it.

 

06, qc, lb, 6 spd. It'll do 90 in a hurry! Sorry, didn't look at the tach. I was too surprised at the speed.

 

109 no more rpms verified by gps

 

On several trips to Utah, the speed limit is 75 mph.
If you do that you get run over,, so everyone does 80 or better.
at 80, the tach on mine shows 2200.
Have had it to 90 and showed 2400with 3.73 gears and auto trans.

 

You got that right! It's like the Mormon 500 around here!

 

I got 3.73s and 90 was 2100 but I got the 35inch meats

 

I was driving in Northern Michigan on I 75 on a lonely stretch of hwy, where I had mine go to 105 on the speedo... I have the 2500 with the 4 speed auto and 4.10's. The truck was still going faster but I had to let go since I did not want to raise my insurance premium LOL... its just amazing how fast the truck accelerates around 75mph / 2500rpm or so. I guess the turbo is spooled up at this rpm?

Mike

 

Thanks for the clarifiaction guys. Looks like when I finally have enough money saved up, That a NV5600 manual would be the truck for me. Because of the better ratio on the top end. I would like an auto but a plan on keeping it for the long term and using it for the farm service vechile when I'm done with it.