TheBrettster

Thanks for the info guys, I'm going to have to look into this. I went with the LS1 fans because my truck is only 200~ pounds heavier than a 1500 ccsb 4x4 due it technically being a 1500HD/2500LD

Atomic

iTrader: (42)

I have no problems with a 6400lb truck and a supercharged 408 with a 34" rad and ls1 fans in alabama heat. I do have a 180 tstat though. Temps usually stay in the 190-210 range depending on how much stop and go im doing.

TheBrettster

Its hotter today and didn't notice it moving off 190, would having my tune adjusted for the fans to turn on sooner help?

Atomic

iTrader: (42)

Yes, but only to the limits of the radiator. I have mine set to low 203/192 and high at 210/202.

SnakeOiler

iTrader: (6)

there's absolutely nothing wrong with that, why would you change anything.

TheBrettster

Just reported what was happening today. But when I had the AC on it ran up to 220/240.

GMCtrk

iTrader: (27)

In my experience, the factory gauge is more of a dummy gauge. Mine doesn't seem to move from 190 until the temp hits 220-225ish.

SnakeOiler

iTrader: (6)

Check your secondary fan/fuse/relay/circuit.

doesn't sound like it is coming on.

TheBrettster

I went outside and both of the fans are running at full speed.

Bumpers

iTrader: (10)

mine didnt keep mine cool at all... if i stopped in traffic in the summer temps would slowly keep rising... thats why i sold them... i will do the 05- fans or 07- fans this winter