2004 8100

C/K Man · August 7, 2003

Does anyone have any idea why the 2004 8.1L is down a bit on H.P. and torque compared to 2003?

Truckman031 · August 7, 2003

Where did you find this info?

C/K Man · August 8, 2003

I have seen some of the 2004 ordering information. The new numbers for the 8.1 are 330 h.p., and 440 ft. lbs. of torque. It is not down very much.

BDBWTE · August 8, 2003

I have seen some of the 2004 ordering information. The new numbers for the 8.1 are 330 h.p., and 440 ft. lbs. of torque. It is not down very much.

Don't make much sense. Unless they detuned the motor becuase of drivetrain problems which seems highly unlikely. Seems more like a slip of the key or a website that don't know. I will tell you that the 8.1 is more motor than the clutch infront of the ZF want's. I drive my buddies truck tach it up and drop the clutch in 3rd to destroy the tires and the clutch shimmies and slips until it catches. He ordered a 4 disc ceramic clutch should be in in a few weeks will give you the heads up then.

HendyPhoto · August 8, 2003

Probably showing them at lower RPM's, the higher in RPM, the more HP and Torque. Unless they just want to sell more diesels!!! But this is all a guess.

R Dogg 56 · August 8, 2003

I have seen some of the 2004 ordering information. The new numbers for the 8.1 are 330 h.p., and 440 ft. lbs. of torque. It is not down very much.

From what I've seen, 330/440 is an increase in the 04 model.

Here is the thread that has all of us sad because of the numbers, real or otherwise.

THE BIGPUNN · August 8, 2003

isnt that the o3 rating also 330/440?

Truckman031 · August 8, 2003

I had always heard 340 HP and 455 Lb.-Ft. of Torque. I even have the 03 Silverado brochure in front of me. Quote: "It takes the right balance of horsepower and torque to handle big payloads. The available Big Block Vortec 8100 V8 engine generates 340 horsepower at 4200 rpm and 455 lb.-ft. of torque at 3200 rpm." Who knows what will happen with the 04 models.

R Dogg 56 · August 8, 2003

isnt that the o3 rating also 330/440?

On GMBuyPower page (or something like that), I think it says 320/440.

R Dogg 56 · August 8, 2003

I had always heard 340 HP and 455 Lb.-Ft. of Torque. I even have the 03 Silverado brochure in front of me. Quote: "It takes the right balance of horsepower and torque to handle big payloads. The available Big Block Vortec 8100 V8 engine generates 340 horsepower at 4200 rpm and 455 lb.-ft. of torque at 3200 rpm." Who knows what will happen with the 04 models.

If we're lucky, we'll see 340/455 for 2005.

ShortCrew · August 8, 2003

Everything I've read says 340/455 for the 2003. I wonder if their are some new emission hurdles for 2004?

BDBWTE · August 8, 2003

I had always heard 340 HP and 455 Lb.-Ft. of Torque. I even have the 03 Silverado brochure in front of me. Quote: "It takes the right balance of horsepower and torque to handle big payloads. The available Big Block Vortec 8100 V8 engine generates 340 horsepower at 4200 rpm and 455 lb.-ft. of torque at 3200 rpm." Who knows what will happen with the 04 models.

That's what I thought...