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So my 90 gw caught fire few days ago from electrical short, so I've decided to start getting it ready for a 5.3 swap.

It's gonna be a slow thread but I'll post what I've done as it happens. As of right now iv pulled the fire damaged engin harness.

Tomorrow I will be pulling the engine hoist home getting the jeep turned backwards in the garage and maybe pull the front wrap, to start cleaning everything up.

Got the front wrap pulled today, time to get engine pulled and start cleaning. It's freaking hot today... for me anyways.

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What is it, 75? Bwahahaha! We get used to temps. 90 feels cool to me at night. Stupid question, what is a LC9? Heard of LS9.

90 today... I'm a winter guy. Lc9 is an aluminum 5.3 with VVT and dreaded AFM (DOD, displacement on demand).

It's found in the 07 to current Chevy trucks and suvs

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Cheapthrills wrote:90 today... I'm a winter guy. Lc9 is an aluminum 5.3 with VVT and dreaded AFM (DOD, displacement on demand).

It's found in the 07 to current Chevy trucks and suvs

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Oh man. 90 is chilly. Displacement on demand? What sensor does that use? Fly by wire gas pedal? VVT and DOD? Are you insane? LOL

So I'm deleting the DOD (displacement on demand) also known as AFM (active fuel management), this system shuts down 4 cylinders while cruising. This uses the lifters to shut down said cylinders via oilbypass cylinoid, the lifters are what fails and take out cam. This is why I'm deleting it.

VVT (variable valve timing) I'm keeping it gives you great low end torque , without sacrificing high-end horsepower.

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It's out

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So I pulled the intake on the 360... it wasn't doing so hot... found severe pitting in the cam lobes that you can see through the holes in the valley. This sucks because I was gonna swap it into another engine for my 87 GW.

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So as stated before the cam was well on its way south. However, the rest of the engine was in beautiful shape.

Pistons are still tight almost no wear on the cylinder walls (could still see hone marks). So lower end bearings a cam hone the cylinders new rings and freshen up the heads and into the daily she goes.
Thought I'd share this info because it sure impressed me. For a GW 360 with 185k on the clock.

There will be more about this engine in the stock tech "87 GW engine refresh"

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Still on hold till I get the other jeep(my daily) running.

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Haven't given up yet... trying to decide on/find a good deal on transmission

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Well my daily driver still isn't running and the only running vehicle is falling apart (wifes 95 bronco) and I've been working 70-80 hrs a week, no time to do anything...

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Here is the all aluminum 5.3 lc9

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Now to find and acquire the 6l80/90
6 speed transmission

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Makes me a sad panda.... had to push her out for the Dd to get the engine done

taxes coming soon gonna get the trans and tcase. Then maybe be able to start mocking stuff up

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Made some progress on the 5.3 wiring harness
Keeping 99% of the emissions stuff

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Bought the engine mout kit and a used 6l80e today

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Great thread!

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