Small-Block Family (Gen IV)

GM Small-Block Family (Gen IV)

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Table of Contents

4.8L “Vortec 4800” Engines

L20

Usage

  • Chevrolet Express (Gen 1.5)
  • Chevrolet Silverado (GMT901)
  • GMC Savana (Gen 1.5)
  • GMC Sierra (GMT902)

LY2

Usage

  • Chevrolet Express (Gen 1.5)
  • Chevrolet Silverado (GMT901)
  • Chevrolet Tahoe (GMT921)
  • GMC Savana (Gen 1.5)
  • GMC Sierra (GMT902)
  • GMC Yukon (GMT922)

5.3L Engines

LMF

Usage

  • Chevrolet Express 1/2 Ton AWD (Gen 1.5)
  • GMC Savana 1/2 Ton AWD (Gen 1.5)

LS4

Usage

  • Buick LaCrosse Super (Gen 1)
  • Chevrolet Impala SS (Gen 9)
  • Chevrolet Monte Carlo SS (Gen 6)
  • Pontiac Grand Prix GXP (Gen 7)

Vortec 5300

Usage

Flex fuel version of the LH6.

  • Chevrolet Avalanche (GMT941)
  • Chevrolet Silverado 1500 (GMT901)
  • Chevrolet Suburban 1/2 Ton (GMT931)
  • GMC Sierra 1500 (GMT902)
  • GMC Yukon XL 1/2 Ton (GMT932)

LH6

Usage
  • Buick Rainier
  • Chevrolet Silverado 1500 (Gen 901)
  • Chevrolet TrailBlazer
  • GMC Envoy Denali, XL, XUV (Gen 2)
  • GMC Sierra 1500 (GMT902)
  • Isuzu Ascender
  • Saab 9-7X

LH8 / LH9

Usage
  • Chevrolet Colorado (GMT355)
  • GMC Canyon (GMT355)
  • Hummer H3 Alpha (GMT345)

LMG

Flex fuel version of the LY5.

Usage
  • Chevrolet Avalanche (GMT941)
  • Chevrolet Silverado 1500 (GMT901)
  • Chevrolet Suburban 1/2 Ton (GMT931)
  • Chevrolet Tahoe (GMT921)
  • GMC Sierra 1500 (GMT902)
  • GMC Yukon (GMT922)
  • GMC Yukon XL 1/2 Ton (GMT932)

LY5

Usage
  • Chevrolet Avalanche (GMT941)
  • Chevrolet Silverado 1500 (GMT901)
  • Chevrolet Suburban 1/2 Ton (GMT931)
  • Chevrolet Tahoe (GMT921)
  • GMC Sierra 1500 (GMT902)
  • GMC Yukon (GMT922)
  • GMC Yukon XL 1/2 Ton (GMT932)

6.0L Engines

L76

Version of the LS2 with Active Fuel Management (cylinder deactivation), called the “Vortec 6000” or “VortecMAX” in some cars (but not all).

Usage

  • Chevrolet Avalanche (GMT941)
  • Chevrolet Silverado (GMT901)
  • Chevrolet Suburban (GMT931)
  • GMC Sierra (GMT902)
  • GMC Yukon XL (GMT932)
  • Pontiac G8 GT

L77

Flex fuel (E85-friendly) variant of the L76.

Usage

  • Chevrolet Caprice PPV (Gen 6)

L96

Flex fuel version of the LY6.

Usage

  • Chevrolet Silverado HD (GMT911)
  • Chevrolet Silverado (GMTK2XX)
  • Chevrolet Suburban 3/4 Ton (GMT931)
  • Chevrolet Suburban 3500 (GMTK2XX)
  • GMC Sierra HD (GMT912)
  • GMC Yukon XL 3/4 Ton (GMT932)

L98

Slightly modified version of the L76 for the Australian market.

LFA / LZ1

Used in hybrid vehicles. The LZ1 adds integrated electronic throttle control, “long-life” spark plugs, Oil Life System, Active Fuel Management, and variable valve timing.

Usage

  • Cadillac Escalade Hybrid (GMT926)
  • Chevrolet Silverado Hybrid (GMT901)
  • Chevrolet Tahoe Hybrid (GMT921)
  • GMC Sierra Hybrid (GMT902)
  • GMC Yukon Hybrid (GMT922)

LS2

Usage

  • Cadillac CTS-V (Gen 1)
  • [intlink id=”692″ type=”page”]Chevrolet Corvette[/intlink] (C6)
  • Chevrolet SSR
  • Chevrolet TrailBlazer SS
  • Pontiac GTO (Gen 4)
  • Saab 9-7X Aero

LY6

Usage

  • Chevrolet Silverado HD (GMT911)
  • Chevrolet Suburban 3/4 Ton (GMT931)
  • GMC Sierra HD (GMT912)
  • GMC Yukon XL 3/4 Ton (GMT932)

6.2L Engines

L92 / L9H / L94 “Vortec 6200”

The L9H was the flex fuel variant, and the L94 added Active Fuel Management on top of that.

Usage

  • Cadillac Escalade (GMT926)
  • Chevrolet Silverado 1500 (GMT901)
  • Chevrolet Tahoe (GMT921)
  • GMC Sierra 1500, Denali (GMT902)
  • GMC Yukon Denali (GMT922)
  • GMC Yukon XL Denali (GMT932)
  • Hummer H2

L99

Reduced output version of the LS3 with Active Fuel Management and variable valve timing

Usage

  • Chevrolet Camaro SS (Gen 5)

LS3

Problems

  • Cam chain tensioner

Usage

LS9

LS3 with a 2.3L supercharger.

Usage

LSA

LS3 with a 1.9L supercharger

Usage

  • Cadillac CTS-V (Gen 2)
  • Chevrolet Camaro ZL-1 (Gen 5)

7.0L Engines

LS7

Usage