HP & TQ for a 04 8100?

[04GMC8100HD]

I thought it was 340 hp and 455 tq, but I've seen 320 and 440 and 330 and 450. Which is it? Thanks

 

Randy

[R Dogg 56]

From where did you see the lower numbers? My best guess is the same for 04: 340/455.

[04GMC8100HD]

I saw it on the GM website.

 

Randy

[R Dogg 56]

 

I've looked all over the GM main site, GMC site, the Vortec adjunct, and even the Chevy site, and they all say 340/455 for 2003, but not a word on the 2004. Only thing I saw for 2004 were a few new models, but nothing on the 8100. Maybe I didn't look hard enough, but do you remember where exactly you saw the low numbers? Were they on a spec sheet for GMC, or on a seperate page from the GM corporate site ?

 

Hope to be of more help to you once I know what the dilly-yo

[04GMC8100HD]

I saw it when I was building my truck on gmbuypower.com. I selected the 8100 option and it came up 320hp and 440tq. Hopefully it's just a glitch in the system.

 

Randy

[Zane]

Remember guys, there is a lower rated version for the suburban.

[04GMC8100HD]

But I ordered a crewcab 2500HD, so it should come with the 340/455 8100 right?

 

Randy

[ridnlow]

When i went to GM Buy Power the only automobile i could build for 2004 was a Pontiac... so i decided to build a 2003.. and ill paste the engine options..

 

ENGINE

Engine, Vortec 8100 V8 SFI (320 HP [253.6 kW] @ 4200 rpm, 440 lb.-ft. [614.2 N-m] @ 3200 rpm)

Code: L18 $850.00

Engine, Duramax 6600 Turbo Diesel V8 (300 HP [223.8 kW] @ 3100 rpm, 520 lb.-ft. [702.0 N-m] @ 1800 rpm)

Code: LB7 $5,010.00

Engine, Vortec 6000 V8 SFI (300 HP [223.8 kW] @ 4400 rpm, 360 lb.-ft. [486.6 N-m] @ 4000 rpm)

Code: LQ4 $0.00

[04GMC8100HD]

That's what I saw!

[R Dogg 56]

I just saw it too. WTF ??? Why are the numbers lowered ?

 

-20hp and -15tq. That ain't right

[1BADHD]

All 04's are getting a good boost across the board.

 

Engine Specs

 

Click on TRUCKS. Then choose which model. Then click SPECIFICATIOns on the left of the screen. 8.1 is getting 340/455. 6.0 is getting325/365, 5.3 is 295/330, 4.8 is 285/295.

[ShortCrew]

In looking at that article, I see their DROPPING power by 10hp on the '04 big block.

 

Quote....

 

The Duramax 6600 6.6L diesel V-8 - with world-class performance in a remarkably quiet package - kicks out 300 hp (224 kw) at 3100 rpm and 520 lb.-ft. (705 Nm) of torque at 1800 rpm. An optional Vortec 8100 8.1L V-8 gas engine has 330 hp (246 kw) at 4200 rpm and 455 lb.-ft. (617 Nm) of torque at 3200 rpm. The Vortec 6000 V-8 produces 300 hp (224 kw) at 4400 rpm and 360 lb.-ft. (488 Nm) of torque at 4000 rpm.

[1BADHD]

You have to go to specs. It appears it depends on what the big block is put in. In the 2500HD its 340/455. In other models its less.

[hirsch21n]

THIS IS WHAT I SEE FOR 2004 SIERRA HD ENGINES HOPE IT MAKES SENSE

 

Engines Vortec 6000

6.0L V-8 (LQ4) Vortec 8100

8.1L V-8 (L18) Duramax 6600

6.6L V-8 (LB7)

Type: 6.0-liter V-8 8.1-liter V-8 6.6-liter V-8

Displacement

(cu in / cc): 364 / 5967 496 / 8128 403 / 6599

Bore & stroke

(in / mm): 4 x 3.62 / 101.6 x 92 4.25 x 4.37 / 107.95 x 111 4.06 x 3.90 / 103 x 99

Block material: cast iron cast iron cast iron

Cylinder head material: cast aluminum cast iron cast aluminum

Valvetrain: OHV OHV OHV

Ignition system: coil near plug, platinum- tipped spark plugs, low-resistance spark plug wires coil near plug, platinum-tipped spark plugs, low-resistance spark plug wires compression, glow plug start aid; platinum-tipped spark plugs, low-resistance spark plug wires

Fuel delivery: sequential fuel injection sequential fuel injection direct injection diesel with high pressure common rail

Compression ratio: 9.4:1 9.1:1 17.5:1

Horsepower

(hp / kw @ rpm): 300 / 224 @ 4400 340 / 254 @ 4200 (L18)

325 / 242 @ 4000

(MD L18 with LRW option)

295 / 220 @ 3600

(MD L18 with LRZ option)

225 / 168 @ 3600

(MD L18 with LQR option) 300 / 224 @ 3100

Torque

(lb-ft / Nm @rpm): 360 / 488 @ 4000 455 / 617 @ 3200 (L18)

450 / 610 @ 2800

(MD L18 with LRW option)

440 / 597 @ 3200

(MD L18 with LRZ option)

350 ./ 475 @ 1200

(MD L18 with LQR option) 520 / 705 @ 1800

Recommended fuel: 87 octane 87 octane Diesel

Maximum engine speed (rpm): manual: 5600

auto: 5600 manual: 5000

auto: 4000 3250

Emissions controls: three-way catalytic converter, exhaust gas recirculation, positive crankcase ventilation, evaporative collection system three-way catalytic converter, exhaust gas recirculation, positive crankcase ventilation, evaporative collection system turbocharged, intercooled, catalytic converter system

[hirsch21n]

just checked with two dealers on their puters,& one phone call to the general. bad news i was wrong!!!! the hp of the L18 8100 ENGINE IS 330HP---450FT/LBS TORQUE. NO TYPO OR GLITCH. COULD THEY JUST LOWERED IT FOR INSURANCE, OR REALLY TOOK AWAY 10 HP & 15 TORQUE. regards LIONEL. ANYONE KNOW FOR SHURE?? TKS