Couple engine swap questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Grimmzda · 09-07-2016, 04:10 PM

I found a smoking deal on a 2000 chevy 1500. I was told it has a 4.8 vortec engine. Unsure if its an ls or an lt1 though. Also no idea on the transmission. Any idea how to tell the engine or trans? Also if it is an lt1, will the trans and harness etc work for an ls engine if i find one down the road? Sorry for all the questions. You all have been a major help to me so far!

Just fyi, im doing my 72 c10 build by myself and im not super mechanically inclined. But i learn fast. So basically im doing what you guys suggest and using your knowledge to help further my own. So thank you all so very much!

**truckster** · 09-07-2016, 04:18 PM

Unless it was modded it's not an LT1.

Kw69 · 09-07-2016, 06:05 PM

All 4.8, 5.3, and 6.0 are LS1 not LT1. You will need the harness from the donor vehicle to work along with the computer brain. The transmission will be the 4L60 E, 4 speed automatic. If ur planning on using this engine or any other LS1 engine you will need harness and computer, and others on here have down the same. I'm sure they will chime in soon. Cool to hear your learning and working on an old truck! Wish you the best of luck, I'm sure you will do fine.

Overdriven · 09-07-2016, 06:19 PM

2000 1500 is going to be a 4.8 or 5.3 Gen III LS engine with a 4l60e. There's a sticker under the hood that'll tell you the displacement of the engine and I think one of the cylinder heads has the displacement as well.

No idea whether the ecu is compatible between LS and LT1 but I'd assume they're not. A later Gen IV ecu might be with a reflash but even then I doubt it. As far as I know any LS ecu will control any GM trans with the proper flash. Flashing the esc you have done by someone to get rid of the stuff you don't need when swapping to an older truck, the theft system, the rear O2 sensors, convert to speed density, setting it for your trans of choice if different from stock, etc.

Pop over the LS section of the board for more tips. Lots of info on mounts and such.

Grimmzda · 09-07-2016, 06:35 PM

Fantastic! I can get the whole truck with a locked up rear end for $350! It starts and runs. Just cant drive.

FlounderGDI · 09-07-2016, 06:37 PM

I can't answer your question but I had to say Hi and Welcome to the Board when I saw a fellow Lafayette-ian.

LongBox · 09-07-2016, 06:40 PM

You will need the fuel pump/sender unit as well, so take the whole tank.

**dflarsen77** · 09-07-2016, 06:41 PM

Oh man, I'd take that deal in a heartbeat!

Overdriven · 09-07-2016, 07:30 PM

Quote:

Originally Posted by dflarsen77

Oh man, I'd take that deal in a heartbeat!

Same here. Best I've found around me is around $1500 for 225+k miles with blown trannys and seats too torn up to reuse. And the local yards want $1300+ for 150+k mile engines and I'm not sure that even includes the harness and/or accessories. Get it!

Grimmzda · 09-07-2016, 08:38 PM

Thanks floundergdi, and yeah im excited to get that deal as well. Im gonna take everything i can use. Hopefully there are youtube videos or how to tutorials online.

09-07-2016, 04:10 PM	#1
Grimmzda Registered User Join Date: Apr 2016 Location: Lafayette,IN Posts: 15	Couple engine swap questions I found a smoking deal on a 2000 chevy 1500. I was told it has a 4.8 vortec engine. Unsure if its an ls or an lt1 though. Also no idea on the transmission. Any idea how to tell the engine or trans? Also if it is an lt1, will the trans and harness etc work for an ls engine if i find one down the road? Sorry for all the questions. You all have been a major help to me so far! Just fyi, im doing my 72 c10 build by myself and im not super mechanically inclined. But i learn fast. So basically im doing what you guys suggest and using your knowledge to help further my own. So thank you all so very much!

09-07-2016, 04:18 PM	#2
truckster Senior Member Join Date: Jan 2001 Location: Orem, Utah Posts: 7,896	Re: Couple engine swap questions Unless it was modded it's not an LT1.

09-07-2016, 06:05 PM	#3
Kw69 Registered User Join Date: Sep 2015 Location: Florida Posts: 111	Re: Couple engine swap questions All 4.8, 5.3, and 6.0 are LS1 not LT1. You will need the harness from the donor vehicle to work along with the computer brain. The transmission will be the 4L60 E, 4 speed automatic. If ur planning on using this engine or any other LS1 engine you will need harness and computer, and others on here have down the same. I'm sure they will chime in soon. Cool to hear your learning and working on an old truck! Wish you the best of luck, I'm sure you will do fine. __________________ 2009 GMC 2500HD 6.0, 6 speed auto, stealth grey, 4x4 Z71, Bilsteins, Black Bear Tuned. Pulls the 10k fifth wheel all so easy. 1969 CST 350 black long bed, 3 on the floor, PS, AC, drum brakes, old school and love it.

09-07-2016, 06:19 PM	#4
Overdriven Registered User Join Date: Mar 2016 Location: Long Island NY Posts: 598	Re: Couple engine swap questions 2000 1500 is going to be a 4.8 or 5.3 Gen III LS engine with a 4l60e. There's a sticker under the hood that'll tell you the displacement of the engine and I think one of the cylinder heads has the displacement as well. No idea whether the ecu is compatible between LS and LT1 but I'd assume they're not. A later Gen IV ecu might be with a reflash but even then I doubt it. As far as I know any LS ecu will control any GM trans with the proper flash. Flashing the esc you have done by someone to get rid of the stuff you don't need when swapping to an older truck, the theft system, the rear O2 sensors, convert to speed density, setting it for your trans of choice if different from stock, etc. Pop over the LS section of the board for more tips. Lots of info on mounts and such.

09-07-2016, 06:35 PM	#5
Grimmzda Registered User Join Date: Apr 2016 Location: Lafayette,IN Posts: 15	Re: Couple engine swap questions Fantastic! I can get the whole truck with a locked up rear end for $350! It starts and runs. Just cant drive.

09-07-2016, 06:37 PM	#6
FlounderGDI Registered User Join Date: Sep 2009 Location: Lafayette, Indiana Posts: 339	Re: Couple engine swap questions I can't answer your question but I had to say Hi and Welcome to the Board when I saw a fellow Lafayette-ian. __________________ 1969 CST/10 "GreenAndWhite" 1974 Nova (SOLD... End of an Era) 2000 Impala (RIP) 2008 Malibu Brand Loyal... I've never owned a Vehicle not made by Chevrolet.

09-07-2016, 06:40 PM	#7
LongBox Registered User Join Date: Sep 2016 Location: Vancouver BC Posts: 784	Re: Couple engine swap questions You will need the fuel pump/sender unit as well, so take the whole tank. __________________ Rick -69 GMC 910 Long Box, 350 -98 Chev Silverado 1500, 350 Vortec 4L60e -08 Mustang GT Convertible

09-07-2016, 06:41 PM	#8
dflarsen77 Active Member Join Date: Jun 2016 Location: Salida, CA Posts: 177	Re: Couple engine swap questions Oh man, I'd take that deal in a heartbeat! __________________ David Larsen 1970 Chevrolet C-10

09-07-2016, 08:38 PM	#10
Grimmzda Registered User Join Date: Apr 2016 Location: Lafayette,IN Posts: 15	Re: Couple engine swap questions Thanks floundergdi, and yeah im excited to get that deal as well. Im gonna take everything i can use. Hopefully there are youtube videos or how to tutorials online.



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