Vortec 3700 Engine Specs (Engine Code: LLR)

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Vortec 3700 Engine Specs

Vortec 3700 Engine Overview

This engine is part of GM Vortec Atlas Engine Families, This Vortech 3700 engine is has code name LLR , this is a in line 5 engine type (I5) it means this engine is have total 5 cylinder that installed in line configuration. The main different of this engine compared to the previous models is on the bore measurement on this Vortec 3700 Engine is using courtesy of a larger 3.76 in of bore ,while Vortec 3500 Engine is only using 3.7 in bore ( gap 0.06 inches) .

Vortec 3700 Engine Specs

This Vortec 3700 engine will produce 239 @ 5800 rpm of horse power for H3 and H3T application and 242 @ 5600 rpm for Canyon and Colorado usage, This Vortec 3700 engine a straight-5 truck engine. It displaces 3.7 L (3,653 cc/223 cu in), courtesy of a larger 95.5 mm (3.76 in) bore while keeping the 102 mm (4.0 in) stroke, and shares much with the rest of the Atlas family. It produces 242 hp (180 kW) at 5600 rpm and 242 lb·ft (327 N·m) at 4600 rpm. Engine redline is 6300 rpm. Following table is detailed of  Vortec 3700 Engine Specs

Specs Item Specs
Engine Type GM Vortec Atlas Engines I5
Engine Code LLR
Engine Electronic integrated into the dual microprocessor PCM
Displacement 3.7 L (3,460 cc)
Transmission Type 5 speed manual

4 speed hydra matic (auto)

Compression Ratio 10.0 : 1
Bore and Stroke (in.) 3.76 x 4.0
Valve configuration (pcs) 4 pcs per cylinder
Valve Lifters hydraulic roller
Champ type Double overhead cam (DOHC)
Fuel System Multi Point Fuel Injection
Recommended Fuel Unleaded fuel
Emissions controls California Low Emission Vehicle II (LEV II).
Maximum engine speed 6300
Horsepower(SAE net@rpm) 239 @ 5800 rpm (H3, H3T)

242 @ 5600 rpm (Canyon, Colorado)

Torque (lb. ft. @ rpm) 242 lb.-ft. @ 4600 rpm (Canyon, Colorado)

241 lb.-ft. @ 4600 rpm (H3, H3T)

Manifold  Material Composite
Exhaust manifold catalyst constructed
Engine block material Aluminum
Cylinder head material Aluminum
Ignition system Coil and plug
Cam Drive Chain

Vortec 3700 Engine Applications

This Vortec 3700 Engine is use for

  • 2007–present Chevrolet Colorado
  • 2007–present GMC Canyon
  • 2007–2009 Hummer H3
  • 2007–2008 Isuzu i-Series

Vortec 3700 Engine www.allenginelist.com

3 Thoughts on “Vortec 3700 Engine Specs (Engine Code: LLR)

  1. Ronnie Shelton on June 18, 2012 at 1:12 pm said:

    I have a 2009 GMC Canyon with the 3700 Vortec 5 cylinder and A/T. I am getting very poor gas mileage. Is there anything I can do?

    • hi Ronnie,
      a poor gas mileage may due to by various causes, you may check
      - engine specs, ensure that your gas mileage is within the specs that wrote ( you can check from our posting)
      - if it is out of specs, you may check your engine condition, is there any leakage? , loose engine compression, transmission condition, drive train, flat tire, and your loading. change the transmission into manual also can be tried to improve your mileage.

      hope it will help
      thanks

  2. Great info! I was wondering if anyone know how much the 3700 engine weighs?

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