gen 3 in 55-57

[Wildstreak]

Is the gen 3 motor, compatible with the 55-57. Has anyone here done it, and if so, do you have any info and advice?

[ChuckDriver]

I'd like to see some info on this too.

[Wildstreak]

I know, I have a 5.3 and want to stick it in my 57, but cant find much info about people using the 5.3 in 55-57 chev gmcs.

[MeanYellowZ]

I have written articles on doing these swaps on some sites and do them for a living. Ill be starting my swap into my 58 in a few weeks. Start to finish on the swap will be about 2 weeks and it will be my daily driver. Even though this site and I don't get along I may make a build thread if the site Nazis allow it.

[Kabwe]

I was going to do this swap, I have anything to do it, but changed my mind (with me that's common.lol). Here is a link you can read to get an idea as to whats involved. http://www.classicperform.com/tech_a...ngine-Swap.htm

[ChuckDriver]

Z, I hope you can put your feelings aside and do us all a favor and let us follow along with your swap! Thanks!!

[joeys66pickup]

i was thinking of swapping my 396 for a 6.0 and some hairdryers (have most of it laying around already) it seems to be catching on me more and more

[Kim57]

Originally Posted by Kabwe

I was going to do this swap, I have anything to do it, but changed my mind (with me that's common.lol). Here is a link you can read to get an idea as to whats involved. http://www.classicperform.com/tech_a...ngine-Swap.htm

Kabwe
What made you change your mind?
Kim

[Kabwe]

Originally Posted by Kim57

Kabwe
What made you change your mind?
Kim

I'll answer that in PM because I don't want to get into a debate about it or make someone rethink their plans. Nothings wrong with this swap its nice but I just have something else in mind.

[MeanYellowZ]

got my truck today, set the mockup motor in it, flipped some manifolds forward and they fit so I think Im gonna turbo it for a fun daily driver...

teasers:

[poncho_villa]

Hey Z. Can you give us any details to kick off this swap? I can see it's a 58 GMC, but the front clip is from something else. I'm guessing camaro. Are the engine mounts the same as ones used for the stock chassis? Any issues with oil pan clearances? Is that a 5.3? Sorry for so many questions, but inquiring mind need to know.

[joeys66pickup]

Yes! this is gonna be Sweet, i was thinking this exact same idea for my 55'

[Tri5Nerd]

Originally Posted by poncho_villa

Hey Z. Can you give us any details to kick off this swap? I can see it's a 58 GMC, but the front clip is from something else. I'm guessing camaro. Are the engine mounts the same as ones used for the stock chassis? Any issues with oil pan clearances? Is that a 5.3? Sorry for so many questions, but inquiring mind need to know.

It looks like it's a camaro clip, NoLimit has engine adapters for the LSx engines. I did my 5.7 a little different, made the mounts which did not affect the oil pan but if you want to run AC then you'll need to notch the K member.

[Kabwe]

The 5.3 oil pan does hang too low for me (I have a mustang 2 IFS). You can use the 5.7 oil pan, wingtray, and pickup tube. Its just that easy.

[Kabwe]

Originally Posted by Tri5Nerd

if you want to run AC then you'll need to notch the K member.

Or buy the expensive top mount bracket.

[MeanYellowZ]

The front stub on mine is a 75 Nova. The motor mount stands are up pretty high so the truck pan on mine is even with the crossmember, which is good cause I will have the truck sitting low someday. The truck is actually a 59 GMC, not a 58...like I said, I just got it yesterday. It's outside getting rained on now, which is super since some if it is bare metal.

[JML55]

Originally Posted by Wildstreak

Is the gen 3 motor, compatible with the 55-57. Has anyone here done it, and if so, do you have any info and advice?

Check my thread i'm doing a 5.3 in my 55 GMC.

[hotrodrookie]

Another vote here on a how to thread for putting an ls in a task force. Im considering buying a wrecked silverado and retro fitting my 59 with all the drivetrain and wiring...

[ChuckDriver]

Any updates??

[hotrodrookie]

Today I'm going to look at a 5.3 for sale. The guy says it has 21,000 on it "i find it hard to believe" but he also says it runs. It's suppose to be a 2001 5.3, but, is the dished pistons in a 5.3 vs flat top pistons in te 4.8 a for sure way to tell the difference?

[hotrodrookie]

Bump.. I have the 5.3 now, planning on how to make it work. I started making the motor mount adapters out of 1/2 plate (all I had). I have a 59 and I was thinking about fabbing my own fuel tank (aluminum or stainless) and am not sure what type of mechanics I'l need in the the tank. Im trying to be as tight with the budget as possible. Ive herd alot about Walbro inline pumps, cheapest route? What type of sending unit could I use? Fuel filters? lines? fittings? Junkyard parts are a plus in my book Any advice would be great

[Atomsplitter]

Hey Hotrodrookie,

Go back to the donor truck and carefully remove plastic fuel lines. I used the plastic lines from the Impala SS donor for my truck and it saved me lots of extra work, they hook up to the fuel rail and filter properly and when you buy your Walbro 255 fuel pump you can get the proper fitting there too. Mine came in 3 separate pieces and after using 2 of them I only had about 12" extra to secure at the tank (between the rails under the bed).

[hotrodrookie]

Ya, unfortunetly there is no donor car. Maybe i could check for some lines at the yard though.

Anyone have info on the corvette fuel filters? Do they make it so you just run a return line to the filter instead of going all the way back to the tank?

[Tri5Nerd]

Originally Posted by hotrodrookie

Ya, unfortunetly there is no donor car. Maybe i could check for some lines at the yard though.

Anyone have info on the corvette fuel filters? Do they make it so you just run a return line to the filter instead of going all the way back to the tank?

Not sure if I can link to another site but I think this info is what you need.
http://www.ls1tech.com/forums/conver...ilter-fpr.html

Connectors:
3/8" female connector DOR-800-121 www.midwayautosupply.com $7.36
5/16" female connector DOR-800-120 www.midwayautosupply.com $7.36
3/8" x 12" double ended male connector DOR-800-155 www.midwayautosupply.com $9.57