GM 4.8L V8

[bbuenger71]

So I see that everyone and their mother is doing the 5.3 swaps but I have not seen anyone doing the swaps with the smaller 4.8 V8. Has anyone done this? I''m sure the reason is due to the fact that the cost difference is minimal so obviously bigger is better. But the reason I am bringing this up is that I may be getting a 4.8 engine and trans with about 50k on the odo for FREE. They are out of a 2005 Silverado short bed. Would this swap be the same as 5.3?

[rocklaurence]

I believe everything is the same except power

[Gumby]

I would have to say they are similar, I would do the swap if I had the option.

[XJChad]

I would do it!

[ClovisMan]

The 4.8l makes plenty of power for a FSJ. Put in a mild cam..even just a stock cam from a 98-02 Camaro or an early Z06 and make as much if not more power than the 5.3l.

[bbuenger71]

The 4.8l makes plenty of power for a FSJ. Put in a mild cam..even just a stock cam from a 98-02 Camaro or an early Z06 and make as much if not more power than the 5.3l.

I just read an article from Super Chevy and they did a comparison with the 5.3 and the 4.8 and there actually wasn't a huge difference at all. And they did say putting in a cam from one of those cars you mentioned Would give it a lot more power.

I didn't know this but the 2 engines share the same block and bore. The 5.3 just has a longer stroke.

[derf]

I wouldn't turn away a free engine and transmission for a swap. Externally, they're more or less identical so all the work is the same.

[XJChad]

The 4.8l makes plenty of power for a FSJ. Put in a mild cam..even just a stock cam from a 98-02 Camaro or an early Z06 and make as much if not more power than the 5.3l.

I just read an article from Super Chevy and they did a comparison with the 5.3 and the 4.8 and there actually wasn't a huge difference at all. And they did say putting in a cam from one of those cars you mentioned Would give it a lot more power.

I didn't know this but the 2 engines share the same block and bore. The 5.3 just has a longer stroke.

Yes they are the same, they use the same block, heads and accessories. If you look at the front of the block behind the alt you will see 4.8/5.3 cast into the block.

[bbuenger71]

I'll be getting the motor in a few weeks after my buddy pulls it out of his truck.

[shimniok]

Free would make up for at least 50 HP in my case

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[FSJ Guy]

Make sure you get all the misc. bits and pieces like all the emissions stuff. You'll need ALL of that to be smog legal in CA.

[bbuenger71]

Make sure you get all the misc. bits and pieces like all the emissions stuff. You'll need ALL of that to be smog legal in CA.

I'll be grabbing everything. Engine harness, PCM, and all the belt driven accessories.

Probably will be a year till I can even get around to starting it. I have absolutely no time right now. Have a 1 and a 5 year old and we are planning our wedding in October. So any free time I have has been spoken for for the next 6-8 months. . I'll work in a few hours here and there to do little things.

[FSJ Guy]

Buy ALL the Jeep parts you can BEFORE the wedding!! Haha!!!!

Again, don't forget the emissions stuff, like the evap canister! You may not end up using that particular one, but at least you'll know what the factory one requires.

[GaJeep94YJ]

4.8 and 5.3 externally are the same. Only difference is a little less power and a little better fuel economy.

Several people do this swap, they are great. I did the 5.3 because I find the engine.

Www.lt1swap.com has all the wiring info you need to convert the factory harness to stand alone three write hook up

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[csuengr]

Buy ALL the Jeep parts you can BEFORE the wedding!! Haha!!!!

Again, don't forget the emissions stuff, like the evap canister! You may not end up using that particular one, but at least you'll know what the factory one requires.

Not to mention the EVAP pressure pump and fuel tank pressure sensor. OBDII tests that the fuel system has no leaks.