Finance Your Engine or Transmission With Monthly Payments Via Affirm
Finance Your Engine or Transmission With Monthly Payments Via Affirm

 GMC / CHEVY 8.1L Engine

GMC/Chevy (L18) 8.1 Liter Engine 2004-2009

Remanufactured Zero Mile Gas Engines


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Fraser Engine Rebuilders, Inc.

Warranty Labor Upgrades Available from Fraser Engines

*Disclaimers: Other Powertrain Companies include engine & transmission brokers. Fraser’s Online Reviews & Ratings numbers are based on combined results. NOTE: there are other respectable engines/transmission companies that offer reasonable warranties; do your research but make sure to come back to Fraser so we can MATCH or BEAT the price and support!

8.1L GMC Chevy Engine
  • Standard Option
  • Fraser Advantage


Part No. FEGMC81S


Remanufactured back to factory spec with aftermarket parts.

For our strongest available engine remanufactured using the highest quality parts, view our Fraser Advantage option.


Warranty: 3 Year / Unlimited Miles, Parts & Labor

Shipping: To Be Determined / Call for Rates

Core Deposit: Call for Details


UNIT COST: $3999.00



WARRANTY – No-Fault  – Call


Part No. FEGMC81R-HD


Remanufactured, High Durability Crate Engine.

Fraser’s Strongest Available Engine!

All OEM Updates & Upgrades Included. Zero Miles.


Warranty: 5 Year / Unlimited Miles, Parts & Labor

Shipping: To Be Determined / Call for Rates

Core Deposit: Call for Details


UNIT COST: $4599.00



TINWARE – Oil Pan,  Timing Cover, Oil Sump –  ADD + $249

WARRANTY –  No-Fault  – Call

Part Type:  Remanufactured Engine Assembly (Factory Spec)

This remanufactured GMC/Chevy 8.1L engine includes the following enhancements from Fraser Engines:

  • Bore and hone all cylinders to OEM clearances (We check all clearances within .0001 of inch),
  • Decking cylinder head(s) and block for straightness,
  • Cutting valve seats and valves to proper degree,
  • Line boring/honing crankshaft/camshaft tunnels,
  • Ground & polish crankshaft, new or remanufactured camshaft(s),
  • New main bearings, rod bearings, pistons, piston rings, lifters, pushrods (if equipped), timing components, oil pump, head bolts,
  • All new internal gaskets and seals.
  • All finishing gaskets are included (MAY VARY PER APPLICATION).

GMC/Chevy 8.1L engine (L18)

The GMC/Chevy 8.1L engine (L18) is a V8 engine designed specifically for use in vehicles from General Motors.

The base engine consists of:

  • An iron engine block and cylinder head
  • Overhead valves (OHV)
  • Sequential fuel injection
  • Electronic throttle control

The engine specifications include:

  • A displacement of 496 cubic inches (8,128 cubic centimeters)
  • 4.25 in x 4.37 in (107.9 mm x 111.1 mm) cylinder bore and piston stroke
  • 9.1:1 compression ratio
  • 330 to 340 horsepower (246 to 254 kW) at 4,200 to 4,400 rpm
  • 440 to 455 lb-ft (597 to 617 Nm) of torque at 3,200 to 3,600 rpm

The GMC/Chevy 8.1L engine was first introduced in 2001, as an option for heavy-duty pickups, vans, and SUVs. The engine was an upgrade to the popular 7.4L engine and offered more power and torque for towing and hauling. The engine was available until 2009 and was replaced by a smaller 6.0L engine.

The GMC/Chevy 8.1L engine was used in various applications, including the Chevrolet Silverado 2500HD and 3500HD, GMC Sierra 2500HD and 3500HD, Chevrolet Express, and GMC Savana. The engine was also used in motorhomes, boats, and other heavy-duty applications. The engine was known for its durability and reliability, making it a popular choice for commercial use.


  • Chevrolet Silverado 2500HD and 3500HD (2001-2006)
  • GMC Sierra 2500HD and 3500HD (2001-2006)
  • Chevrolet Suburban 2500 (2001-2009)
  • GMC Yukon XL 2500 (2001-2009)
  • Chevrolet Express 2500 and 3500 (2001-2009)
  • GMC Savana 2500 and 3500 (2001-2009)
  • Workhorse W-Series (2001-2009)
A core deposit is a charge added to the purchase of most engines or transmissions. We use the term "deposit" because once your new part is installed, we'll graciously pick-up your old engine or transmission free of charge and then refund the core deposit you paid.

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To express our thanks, you’ll receive a 3% discount towards your engine or transmission order. 

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