5.3 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

tcoop68 · 10-05-2018, 12:03 AM

I just found a 5.3 engine and transmission still bolted together out of a 2015 Silverado with less than 10,000 miles on it is it worth $4,800 is this a good engine to put in my 68 short wide.

**HO455** · 10-05-2018, 12:09 AM

Does it come with all the wiring, computers, and exhaust manifolds? If so then it would be worth the price. 350ish horsepower would be a good combo for most folks.

cornerstone · 10-05-2018, 12:21 AM

Go to the lsx swap section of the forum for a lot more info on this. This engine is the new direct injection set up and requires a bit more to tackle. If it is not including the trans, computer, and all the accessories, I would pass. I know that I got an exceptional deal at $2500. with an automatic 6 speed on my set up, which is the same thing as yours (L83) but that is nearly double. Mine is a 2014 and it has +/- 18k miles on it. There have been several swaps done so far and these guys said the performance is really good. Chevy rates them at 385 hp and the same on torque. Hope it helps!

**HO455** · 10-05-2018, 08:34 AM

The 380/416 rating is on E85. Which is sweet if you can get it.

http://gmauthority.com/blog/gm/gm-engines/l83/

**Jason Banks** · 10-05-2018, 09:06 AM

You would need to make sure you have the Flex Fuel sensor installed in the fuel line to unlock the E85 horespower.

I had a 2014 that I don't think was flex fuel compatible. My 2017 is, but it was an option and all the trucks I looked at didn't have the option.

I only put E85 in one time and didn't really notice a difference. I also didn't know there would be a difference until I read your post. But, I'm stuck on traffic most of the time anyway.

weq92f · 10-05-2018, 10:10 AM

I've seen a few of these late LT combos going for under 5k with low miles but without the tranny module or the ECU for the engine. My guess has been up til now that the reason was the cost involved getting them running with new computers/controllers.

Any further insight?

-klb

**LockDoc** · 10-05-2018, 03:33 PM

-
I'll move this to the LSx Swaps forum....

LockDoc

**Clyde65** · 10-05-2018, 09:02 PM

That is an LT L83/6l80, totally different animal than an LSx swap. Will cost more to put in and get running, but there is more hp and torque than an LS 5.3.

I think $4200 is high, but that is me, in my area, the same would be about $1500 less or so.

Little more mileage but...24k

https://dallas.craigslist.org/ftw/pt...695586994.html

10-05-2018, 12:03 AM	#1
tcoop68 tcoop68 Join Date: Jan 2006 Location: Cushing Oklahoma Posts: 226	5.3 I just found a 5.3 engine and transmission still bolted together out of a 2015 Silverado with less than 10,000 miles on it is it worth $4,800 is this a good engine to put in my 68 short wide.

10-05-2018, 12:09 AM	#2
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 11,366	Re: 5.3 Does it come with all the wiring, computers, and exhaust manifolds? If so then it would be worth the price. 350ish horsepower would be a good combo for most folks. __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377

10-05-2018, 12:21 AM	#3
cornerstone Registered User Join Date: Apr 2014 Location: Azle,Texas Posts: 2,248	Re: 5.3 Go to the lsx swap section of the forum for a lot more info on this. This engine is the new direct injection set up and requires a bit more to tackle. If it is not including the trans, computer, and all the accessories, I would pass. I know that I got an exceptional deal at $2500. with an automatic 6 speed on my set up, which is the same thing as yours (L83) but that is nearly double. Mine is a 2014 and it has +/- 18k miles on it. There have been several swaps done so far and these guys said the performance is really good. Chevy rates them at 385 hp and the same on torque. Hope it helps!

10-05-2018, 08:34 AM	#4
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 11,366	Re: 5.3 The 380/416 rating is on E85. Which is sweet if you can get it. http://gmauthority.com/blog/gm/gm-engines/l83/ __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377

10-05-2018, 09:06 AM	#5
Jason Banks Senior Member Join Date: Dec 1999 Location: TX Posts: 1,624	Re: 5.3 You would need to make sure you have the Flex Fuel sensor installed in the fuel line to unlock the E85 horespower. I had a 2014 that I don't think was flex fuel compatible. My 2017 is, but it was an option and all the trucks I looked at didn't have the option. I only put E85 in one time and didn't really notice a difference. I also didn't know there would be a difference until I read your post. But, I'm stuck on traffic most of the time anyway.

10-05-2018, 10:10 AM	#6
weq92f Registered User Join Date: Oct 2016 Location: Dallas Texas Posts: 3,223	Re: 5.3 I've seen a few of these late LT combos going for under 5k with low miles but without the tranny module or the ECU for the engine. My guess has been up til now that the reason was the cost involved getting them running with new computers/controllers. Any further insight? -klb __________________ 67 C10 fleet fuel injected '70 402, 700r4, 3.73 posi 07 335 sport turbo 6sp 94 Trans Am GT LT1 6sp posi -- sold after 22yrs 99 540 sport V8 6sp -- sold 73 240z L24 4sp -- given to friend 68 C10 step 350/350 3.73 open -- sold

10-05-2018, 03:33 PM	#7
LockDoc The Older Generation Join Date: Aug 2006 Location: Montezuma, Iowa Posts: 25,781	Re: 5.3 - I'll move this to the LSx Swaps forum.... LockDoc __________________ Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 -

10-05-2018, 09:02 PM	#8
Clyde65 1965 Chevy C10, 2005 4.8L/4l60 Join Date: Aug 2004 Location: DFW Texas Posts: 8,546	Re: 5.3 That is an LT L83/6l80, totally different animal than an LSx swap. Will cost more to put in and get running, but there is more hp and torque than an LS 5.3. I think $4200 is high, but that is me, in my area, the same would be about $1500 less or so. Little more mileage but...24k https://dallas.craigslist.org/ftw/pt...695586994.html __________________ Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684 *support our troops!*

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