4.8L Engine

4.8L Engine

The 4.8 L and the 5.3 L are smaller truck versions of the LS1 and were designed to replace the 305 and the 350 in trucks. Both the 4.8 L and the 5.3 L share the same engine block, heads (upper end) and as they share architecture, parts interchange freely between these engines and other variants in the LS family.

The Vortec 4800 LR4 (VIN code "V") is a Generation III small block V8 truck engine. Displacement is 4.8 L (293 cu in) with a 96.01 mm (3.78 inch) bore and 83 mm (3.27 inch) stroke. It is the smallest of the Generation III Vortec truck engines and was the replacement for the 5.0 L 5000 L30.

  • The LR4 engines from 1999-2000 produced 255 hp (190 kW) 
  • The 2001 and above models made 270–285 hp (201–213 kW)
  • All have a torque rating between 285–295 lb·ft (386–400 N·m), depending on the model year and application.

The 2005-2006 models made 285 hp (213 kW) and 295 lb·ft (400 N·m). They use flat top pistons.

  • Mighty Mouse 4.8 LS Motor
120k miles. 6 month warranty. Includes everything except starter and a/c compressor. Selling fast.

    4.8 LS Engine | Alpha

    General Motors

    $999.99
    4.8 LS engines are the mighty max of the LS family. Don't rule them out because they have the least displacement.  Hot Rod Magazine was able to squeeze 1,200 HP out of a junkyard motor with stock internals and cheap turbos, RELIABLY!! The article...
    $999.99
  • Mighty Mouse 4.8 LS Motor
Code Charlie.

    4.8 LS Engine | Bravo

    General Motors

    MSRP: $999.99
    $799.99
    4.8 LS engines are the mighty max of the LS family. Don't rule them out because they have the least displacement.  Hot Rod Magazine was able to squeeze 1,200 HP out of a junkyard motor with stock internals and cheap turbos, RELIABLY!! The article...
    MSRP: $999.99
    $799.99
  • The LS engine design has incredible potential, but once you start bolting on big superchargers, an aluminum block just can't contain all of that power. These iron LS blocks have all of the same potential, but their cast iron construction is capable of withstanding high-horsepower applications. This is a brand new 4.8L/5.3L block that has been bored to the stock 5.7L bore diameter of 3.898 in. and painted black. It includes side main bolts, expansion plugs, threaded plugs, oil restrictor, and dowel pins. Further over boring is not recommended without sonic testing.

Main Journal Type:LS mains
Engine Block Style:Stock/OEM standard deck
Deck Height (in):9.240 in.
Cylinder Bore as Shipped:3.898 in.
Engine Block Material:Cast iron
Main Bolt Style:6-bolt
Main Caps Included:Yes
Main Cap Material:Cast iron
Main Cap Fasteners Included:Yes
Main Bearings Included:No
Rear Main Seal Style:1-piece
Finished Cylinder Bores:Yes
Raised Cam Location:No
Cam Bearings Included:Yes
Freeze Plugs Included:Yes The LS engine design has incredible potential, but once you start bolting on big superchargers, an aluminum block just can't contain all of that power. These iron LS blocks have all of the same potential, but their cast iron construction is capable of withstanding high-horsepower applications. This is a brand new 4.8L/5.3L block that has been bored to the stock 5.7L bore diameter of 3.898 in. and painted black. It includes side main bolts, expansion plugs, threaded plugs, oil restrictor, and dowel pins. Further over boring is not recommended without sonic testing.

Main Journal Type:LS mains
Engine Block Style:Stock/OEM standard deck
Deck Height (in):9.240 in.
Cylinder Bore as Shipped:3.898 in.
Engine Block Material:Cast iron
Main Bolt Style:6-bolt
Main Caps Included:Yes
Main Cap Material:Cast iron
Main Cap Fasteners Included:Yes
Main Bearings Included:No
Rear Main Seal Style:1-piece
Finished Cylinder Bores:Yes
Raised Cam Location:No
Cam Bearings Included:Yes
Freeze Plugs Included:Yes

    Iron LS Engine Block

    Chevrolet Performance

    MSRP: $1,199.99
    $799.99
    The LS engine design has incredible potential, but once you start bolting on big superchargers, an aluminum block just can't contain all of that power. These iron LS blocks have all of the same potential, but their cast iron construction is capable of...
    MSRP: $1,199.99
    $799.99