Can you tell if this is a L33??

[NastyBuzzard]

I have a chance to purchase complete 5.3 dropout from a 2005 Yukon for $500. 110k miles. He sent me a pic and it looks like an aluminum block or am I nuts?

[Fitz57]

I cant tell from your pic. Thought the L33 only came in 05, 06, 07 extended cabs. Get the vin number and do a vin number check. The eighth digit in the vin should be a B I believe.

[NastyBuzzard]

Originally Posted by Fitz57

I cant tell from your pic. Thought the L33 only came in 05, 06, 07 extended cabs. Get the vin number and do a vin number check. The eighth digit in the vin should be a B I believe.

I wish I could. It came out of a 05 Yukon that a tree smashed from ice storm a couple months ago. All I have is serial #s from ECM. Apparently owner is either too lazy or isn't smart enough to go stick a magnet on it for me or give me head casting #s or look at rear of the block... If he wasnt a couple hours away I'd just ride over.

[akdg87]

it appears to be an aluminum block (unless it is dirty?).

BUT the L33's in trucks that i saw were equipped with electric fans.

[NastyBuzzard]

Originally Posted by akdg87

it appears to be an aluminum block (unless it is dirty?).

BUT the L33's in trucks that i saw were equipped with electric fans.

interesting!! its driving me a lil nuts wondering.

Also anyone know where I can buy new intake bolts for 4.8/5.3 stock 01 intake?

[NastyBuzzard]

Originally Posted by akdg87

it appears to be an aluminum block (unless it is dirty?).

BUT the L33's in trucks that i saw were equipped with electric fans.

interesting!! its driving me a lil nuts wondering.

Also anyone know where I can buy new intake bolts for 4.8/5.3 stock 01 intake?

[tfi rcing]

Unless the aluminum blocks were coated black-that is likely an iron block.

[69chevytrucker]

copper ground wire going to block would mean iron block in my opinion aluminum wouldnt
be grounded strait to it

[littlevictories]

aluminum conducts electricity just fine. they ground the harness to aluminum heads...

[NastyBuzzard]

Thanks guys! Now about those intake bolts... Or the intake bolt gasket.

[Wasted Income]

If the price is right, I'd buy it whether it was an aluminum L33 or not. All the 05+ (and SOME 04) engines have the stronger dimple rods and floating pin pistons. They're a great shortblock to make some power with.

Any parts store, rock auto, ebay, etc can get you intake gaskets.

Intake bolts:
http://www.autopartswarehouse.com/sh...rado_1500.html

[NastyBuzzard]

Originally Posted by Wasted Income

If the price is right, I'd buy it whether it was an aluminum L33 or not. All the 05+ (and SOME 04) engines have the stronger dimple rods and floating pin pistons. They're a great shortblock to make some power with.

Any parts store, rock auto, ebay, etc can get you intake gaskets.

Intake bolts:
http://www.autopartswarehouse.com/sh...rado_1500.html

I already have a donor 2001 silverado 4x4 ext cab but it has around 150k miles and turned out to be a 4.8, I am doing the swap to a 1987 GMC V1500 4x4.

I was just shopping for a donor block to test fit but was really wanting to find a lower mileage 5.3 to swap the 4.8 with. I talked him down from $750 to $500. I am seriously considering getting it. I am wondering if I can just drop the "longblock" into the 2001 chassis and fire it up and make sure everything runs correctly, just swap everything from the 4.8 onto it since I have a 2001 and its a 05 engine, I'd need to use the older intake for the egr/return line.

What do yall suggest?

Those intake bolts dont look correct? Also i would need 10 not 8. I cant find any parts store that carries them.

Is it at all possible to just find the rubber grommet on them?

Here are bolts in question:

[littlevictories]

i bought a set on ebay, like $20

[NastyBuzzard]

Originally Posted by littlevictories

i bought a set on ebay, like $20

I've scoured ebay and found nothing.. Maybe I am searching for the wrong thing.

So whats the vote? Drop the $500 on the complete engine w/ ecm 100k miles. Upgrade from the 4.8 to the 5.3? I have been leery of the torque the 4.8 will have in my 4wd truck.

I have the $, it isn't in the budget.. It will slow my build down a lil bit if I do make the purchase.

[Wasted Income]

Originally Posted by NastyBuzzard

I already have a donor 2001 silverado 4x4 ext cab but it has around 150k miles and turned out to be a 4.8, I am doing the swap to a 1987 GMC V1500 4x4.

I was just shopping for a donor block to test fit but was really wanting to find a lower mileage 5.3 to swap the 4.8 with. I talked him down from $750 to $500. I am seriously considering getting it. I am wondering if I can just drop the "longblock" into the 2001 chassis and fire it up and make sure everything runs correctly, just swap everything from the 4.8 onto it since I have a 2001 and its a 05 engine, I'd need to use the older intake for the egr/return line.

What do yall suggest?

Those intake bolts dont look correct? Also i would need 10 not 8. I cant find any parts store that carries them.

Is it at all possible to just find the rubber grommet on them?

Here are bolts in question:

Sorry about the bolts link...I saw that pic was wrong, but figured it was just a stock photo....lol.

I've got a couple spare 5.3/6.0 intakes sitting around the shop. I'll send you the bolts for $20. PM me if you want them.

I've swapped 7 junkyard LS motors in my time, and never once have I had a problem with one. I wouldn't waste your time swapping it into the donor truck to "make sure it runs". lol.

Regardless, $500 is a great price for a 5.3 that is that complete.

Yes, the 2001 intake will swap to the 2005 engine no problem...which is good, because you'll need a place to mount the throttle cable bracket if you're staying DBC. I would delete the EGR nonsense when you have it tuned, and plug the hole in the intake. You can run the passenger side manifold from that 2005 engine, which won't have the EGR boss on it.

[Wasted Income]

Originally Posted by NastyBuzzard

I've scoured ebay and found nothing.. Maybe I am searching for the wrong thing.

So whats the vote? Drop the $500 on the complete engine w/ ecm 100k miles. Upgrade from the 4.8 to the 5.3? I have been leery of the torque the 4.8 will have in my 4wd truck.

I have the $, it isn't in the budget.. It will slow my build down a lil bit if I do make the purchase.

I bet you'd be able to sell that 4.8 for about what you're getting the 5.3 for.

[NastyBuzzard]

Originally Posted by Wasted Income

Sorry about the bolts link...I saw that pic was wrong, but figured it was just a stock photo....lol.

I've got a couple spare 5.3/6.0 intakes sitting around the shop. I'll send you the bolts for $20. PM me if you want them.

I've swapped 7 junkyard LS motors in my time, and never once have I had a problem with one. I wouldn't waste your time swapping it into the donor truck to "make sure it runs". lol.

Regardless, $500 is a great price for a 5.3 that is that complete.

Yes, the 2001 intake will swap to the 2005 engine no problem...which is good, because you'll need a place to mount the throttle cable bracket if you're staying DBC. I would delete the EGR nonsense when you have it tuned, and plug the hole in the intake. You can run the passenger side manifold from that 2005 engine, which won't have the EGR boss on it.

Anyway to get them to SC by friday? If so, DEAL!! Or saturday to be honest.

Here is my build thread... I am not doing just a typical standalone swap..
http://67-72chevytrucks.com/vboard/s...d.php?t=627161

I think I may just jump on this 5.3 and let my bank account hurt for a month or so...

I do plan to delete egr.. I think I need a 1 3/8" freeze plug though. I want to get pcm done to eleminiate egr and cats..

You really think I could get that much $ from a 4.8?? I'd probably have to sit on it for a while to find the right buyer.. Makes it even more tempting!!!

[Wasted Income]

Originally Posted by NastyBuzzard

Anyway to get them to SC by friday? If so, DEAL!! Or saturday to be honest.

Here is my build thread... I am not doing just a typical standalone swap..
http://67-72chevytrucks.com/vboard/s...d.php?t=627161

I think I may just jump on this 5.3 and let my bank account hurt for a month or so...

I do plan to delete egr.. I think I need a 1 3/8" freeze plug though. I want to get pcm done to eleminiate egr and cats..

You really think I could get that much $ from a 4.8?? I'd probably have to sit on it for a while to find the right buyer.. Makes it even more tempting!!!

By friday...you mean tomorrow?? lol. No. I'm at work and all that stuff is at home. I could ship it out tomorrow though if you want them.

Not sure what LS stuff is going for there....but it's climbed in price a BUNCH around here...I had a buddy about 7 years ago that literally could not give away a 4.8. lol

http://chicago.craigslist.org/nwi/ptd/4477839579.html

http://terrehaute.craigslist.org/pts/4465915423.html

http://madison.craigslist.org/pts/4480105786.html

There's a pretty good spread on prices, but if nothing else, you should be able to make at least half your money back, if not all of it. The CORE price around here is $300 on ANY LS from my local junkyard...

[Clyde65]

There is nothing wrong with a 4.8, compared to a 5.3 there is only 25-35 HP difference. the 4.8's run real well with turbos ( not that the 5.3's wont tho) and they are cheaper to get than the 5.3 usually.

I am running a 4.8 out of an 05, cam, CAI, performance tune, headers and it runs hard and still gets @20MPG, double the HP my 350 had.

[NastyBuzzard]

Originally Posted by Wasted Income

By friday...you mean tomorrow?? lol. No. I'm at work and all that stuff is at home. I could ship it out tomorrow though if you want them.

Not sure what LS stuff is going for there....but it's climbed in price a BUNCH around here...

http://chicago.craigslist.org/nwi/ptd/4477839579.html

http://terrehaute.craigslist.org/pts/4465915423.html

http://madison.craigslist.org/pts/4480105786.html

There's a pretty good spread on prices, but if nothing else, you should be able to make at least half your money back, if not all of it. The CORE price around here is $300 on ANY LS from my local junkyard...

Very nice and reassuring!! Although may save the 4.8 for my 79 TA !! Nah I don't really have anywhere to store it. You may have convinced me, my bank account will suffer, plus dont tell the wife hahahaha. I could also sell wiring harness off it maybe and pcm from the 4.8..

Do I just swap in the 5.3 ecm, or is it more complicated than that?

I found GMs part # for the bolts w/grommets (grommets dont sell seperately). Its GM #89017368 and they are around $20 for 5 of the bolts and I need 10 unfortunately.

[NastyBuzzard]

Originally Posted by Clyde65

There is nothing wrong with a 4.8, compared to a 5.3 there is only 25-35 HP difference. the 4.8's run real well with turbos ( not that the 5.3's wont tho) and they are cheaper to get than the 5.3 usually.

I am running a 4.8 out of an 05, cam, CAI, performance tune, headers and it runs hard and still gets @20MPG, double the HP my 350 had.

My concern isn't really the HP from the 4.8. This is going into my 87 LWB 4x4 truck that I use mostly for towing/hauling, picking up parts or materials. I don't tow anything really heavy or anything tho. I just remember my 01 silverado I owned about 5 years ago (single cab/stepside or sportside) had the 4.8 and it was a great lil truck but was afraid of hills and not real well at towing... May have had 3.08 gears tho not sure.

Although 20MPG is what Im shooting for!

[littlevictories]

Originally Posted by Wasted Income

Yes, the 2001 intake will swap to the 2005 engine no problem...which is good, because you'll need a place to mount the throttle cable bracket if you're staying DBC.

threadjack:

do the 2005+ DBW intakes have the bosses for the brass inserts or are they gone? I have pulled and pressed-in those inserts a couple times on older stuff---2003ish

[Wasted Income]

Originally Posted by littlevictories

threadjack:

do the 2005+ DBW intakes have the bosses for the brass inserts or are they gone? I have pulled and pressed-in those inserts a couple times on older stuff---2003ish

I believe they are gone, but I could be wrong. I think i have a 2007 LQ4 intake kicking around somewhere...i'll take a look.

[NastyBuzzard]

Thats why I love this forum.. Nice guys all around.

[ls1nova71]

Originally Posted by littlevictories

threadjack:

do the 2005+ DBW intakes have the bosses for the brass inserts or are they gone? I have pulled and pressed-in those inserts a couple times on older stuff---2003ish

All of my Gen3's have had them, up to and including my 2007.