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You are at :Home»Auto Machine Shop»03 GM 6.6 LB7 Duramax 32V V8 Remanufactured Engine
03 gm gmc 6.6 lb7 duramax diesel short block rebuild

03 GM 6.6 LB7 Duramax 32V V8 Remanufactured Engine

Auto Machine Shop, Chevy GM Engines, Remanufactured Engines 4 Comments

GM 6.6 LB7 Duramax Engine.

We get serious power with GM 6.6 LB7 diesel truck engines. From workhorse to Sunday driving, it’s a beast that gets the job done.

We have such a beast right here. This is a 2003 GM 6.6  LB7 Duramax 402 32V V8 diesel engine that fits the Kodiak, Silverado, Sierra and Topkick trucks.

The Rebuild Plan:  Teardown, Inspect for damage or cracks, Hot tank and clean.
Bore and Hone the engine block, Grind the crank and cam.
Valve Job on the cylinder head- Grind valves, Cut valve seats, Resurface head, Clean, Paint and assemble.
Engine Rebuild Kit with new Pistons, rings, engine bearings, gasket set, thrust washes, freeze plugs, oil pump, and timing set.

We tore it apart, inspected the block and heads for any damaged parts or cracks, then hot tanked everything.

Hot tanked GM 6.6 lb7 engine block
Teardown GM 6.6 lb7 engine
03 gm 6.6 lb7 duramax engine teardown

The cylinders were bore and honed to the proper finish, another hot tank, then a coat of paint. Meanwhile we work the cylinder heads, grind valves, cut seats, resurface, clean and assemble.

GM 6.6 32v cylinder head valve job
Remanufactured gm 6.6 lb7 32v diesel cylinder heads

Short block rebuild in progress.  No pics of the bore and hone, but you can see the nice finish on the block and the pistons have a good fit.   Engine rebuild kit with new pistons, rings, full gaskets, bearings, thrust washers, oil pump and timing kit.

short block assemble GM 6.6 LB7 duramax
block cylinder showing pistons
gm 6.6 lb7 duramax short block rebuild
gm 6.6 lb7 duramax short block rebuild
cylinder bore and hone-gm 6.6 duramax block
oil pickup tube installation
plates gm 6.6 duramax
install timing parts gm 6.6

Time to add those oil injector tubes with perfect alignment and crank clearance. They’re a pain in the ass!

oil injector tubes waiting for install
install oil injector tubes 6.6 duramax
crank clearance on the oil tubes 6.6 duramax
align oil tubes next to crank gm 6.6

Putting on the finishing touches to the GM 6.6 LB7 short block.

gm 6.6 lb7 rebuilt short block
03 gm gmc 6.6 lb7 duramax diesel short block rebuild
Rebuilt 03 gm gmc 6.6 lb7 duramax engine

It’s ready for customer pick up.  Client wants to complete final assembly.

Remanufactured GM GMC 6.6 LB7 Duramax Short block and Cylinder heads.
remanufactured 03 gm 6.6 lb7 duramax engine long block

What we offer..

Auto parts for your GM GMC 6.6 LB7 Duramax engine, call us 818 767-6603.

Engine rebuilding machine shop services for your GM 6.6 Duramax- bore and hone, decking, valve job, block work, cylinder head repairs, crank grinding, call us 818 767-6603

Los Angeles Engine builders with solutions.

Use the Contact page if you want to email us, give us details.

GM 6.6 Lb7 machine shop GM GMC 6.6 LB7 Duramax engine rebuilds Kodiak 6.6 LB7 Duramax diesel engine rebuild Sierra 6.6 LB7 Duramax rebuilt engine Silverado 6.6 LB7 duramax engine repair 2014-06-01
Lucinda
Tags GM 6.6 Lb7 machine shop GM GMC 6.6 LB7 Duramax engine rebuilds Kodiak 6.6 LB7 Duramax diesel engine rebuild Sierra 6.6 LB7 Duramax rebuilt engine Silverado 6.6 LB7 duramax engine repair
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4 Comments

  1. Carl
    January 16, 20165:50 am -

    03 Duramax 6.6 cylinder LB7 Head do you have one how much do you want

    Reply
    • Lucinda
      January 16, 201610:43 am -

      Carl,
      What is your casting number?
      What is your VIN#

      Let me know and I will check and get back to you.
      Thanks
      Lucinda

      Reply
  2. stephen weaver
    August 29, 20152:04 pm -

    I have an 03 LB7 here its starting to smoke a bit at idle, was wondering if the inj. should get replaced? I do have it piped and tuned with a duramilage 90 hp tune, but now its starting to skip a beat every once and awhile when I mop it. Thank you

    Reply
    • Lucinda
      August 31, 20159:54 am -

      What color is the smoke? Is it blue or black?
      Blue is usually oil.
      Black is probably fuel, may be running rich.

      Let us know.
      Thanks
      Lucinda

      Reply

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Valley Auto Parts and Engines started in 1978 to bring affordable Engine Rebuilding and Auto Parts to Los Angeles. Now worldwide.


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