Jump to content

L83 to L86 swap

Clutch Bo
 Share

Recommended Posts

L86 All Terrain Senior Enthusiast

L86 All Terrain

Posted
Posted

Would it not be easier to sell the truck and buy one with the motor you want? Or wait of a 2020 where you can spec the L87 in lower trim levels. I would expect you could swap it cheaper than adding a supercharger to your 5.3L assuming you can find one from a salvage yard. I would just trade in the truck though personally, fully warranty, full value of yours on trade. People and dealers alike will walk away from your truck if you trade it in one day and the VIN says 5.3L but you did your own 6.2L swap at home. I know I would. 

  • Replies 53
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

flyingfool
flyingfool

i dont see why you need a different ecu. mechanically identical engines, besides the different displacements and maybe forged internals. so much cheaper to just turbo the 5.3

Clutch Bo
Clutch Bo

guys i hardly ever tow, it’s strictly for the power haha

Snowcamo
Snowcamo

Do the swap. It'll give us a guide to follow. Not much info or knowledgeable folk out there... Sent from my LG-G710 using Tapatalk

Snowcamo Senior Enthusiast

Snowcamo

Posted
Posted

Whenever this 5.3 takes a dump im gonna swap. Resale value isnt of concern. Fun factor is...

Sent from my LG-G710 using Tapatalk

  • Like 1
1SLOW1500 Senior Enthusiast

1SLOW1500

Posted
Posted

Ok so it can be done. Biggest issue is if you change trans to a 8 speed. You would need to change the os in the pcm to a 6.2 file. Or at least custom tune that whole file. As fuel is biggest difference. If sensors are different many can swap. I have a 6.2 in the crate for when my little 5.3 quits. But was happy with the 5.3 and turbo. 600whp is good. And fuel is all that is holding it back now.

Sent from my SM-N960U using Tapatalk

ullose272 Enthusiast

ullose272

Posted
Posted
Ok so it can be done. Biggest issue is if you change trans to a 8 speed. You would need to change the os in the pcm to a 6.2 file. Or at least custom tune that whole file. As fuel is biggest difference. If sensors are different many can swap. I have a 6.2 in the crate for when my little 5.3 quits. But was happy with the 5.3 and turbo. 600whp is good. And fuel is all that is holding it back now.

Sent from my SM-N960U using Tapatalk


But the 6.2 works fine with the 6 speed right

Sent from my Pixel 3 using Tapatalk

SierraHD17 Senior Enthusiast

SierraHD17

Posted
Posted (edited)

Wait a little bit and get the 6.6 from the new HD trucks... to heck with the 6.2.  No afm hardware to delete and more power potential.

 

And yeah the 6.2 was paired to the 6L80e in 2014.

Edited by SierraHD17
Frankielozano214 Senior Enthusiast

Frankielozano214

Posted
Posted (edited)

I think I’ll be doing the 6.2 swap in my 2014 Silverado when my 5.3 that’s a dump, I  already got all the parts for the 2016-18 LTZ front end conversion (just need hood now)

Edited by Frankielozano214
Mandalorian Enthusiast

Mandalorian

Posted
Posted
On 11/11/2019 at 12:58 PM, Donstar said:

Your stock 5.3 will comfortably tow your maximum towing limit.  Swapping engines will potentially increase your fun factor but may be disappointing, imo, if you are hoping to increase towing abilities.   Keep us posted on your progress!

This. The limiting factor on towing is not the engine, it's the frame/suspension. The 5.3 engine has more power than HD trucks for 20-30 years ago with high tow ratings. 

L86 All Terrain Senior Enthusiast

L86 All Terrain

Posted
Posted (edited)

If your dead set on a swap, an OEM LT1 is going to run you $9,750 in a crate. You can get a sleeved 427 from Texas Speed for around $8,000, and probably 2-3,000 for your core if you don't wait until it throws a rod through the block. Just an idea. Destroyed blocks are worth nothing, good cores will help you pay for the new engine if you're not going to pull one out at a junkyard. 

 

Remember, just because you lose 10mph and a gear or two climbing a long grade does not mean your truck doesn't pull well. I can take you for a ride in my 600HP Kenworth that will lose 8 gears and 30mph on a hard pull with a big dozer or hoe on behind, and its the best pulling truck I have ever driven. My 6L tows better than my 6.2L because of the chassis, but it is gutless as slow in comparison to my half ton. I didn't even consider taking the 6.2L on my 2000 mile trip pulling 6k, even though it would have been faster and more efficient, the HD truck just handles everything better and safer, except in terms of power. You wont be accredited any additional GVWR by swapping, you would have to have the truck recertified by a SAE accredited test facility which will cost $10,000+. The DOT, Police and Insurance will only accredit you for the original GWVR if your ever involved in an accident or called into a weigh scale.

Edited by L86 All Terrain
Frankielozano214 Senior Enthusiast

Frankielozano214

Posted
Posted
15 minutes ago, SierraHD17 said:

It's about performance..  and buying a new crate engine at full retail is ridiculous... Some of you guys are nuts lol.

Shit I don’t got that type of money ? I’m buying a used one from a wrecked truck

  • Like 1

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • Atlas
      Wow I'm in a pickle. (Broke down truck) and a story.

      By Atlas · Posted

      Well....I've done my first intake gasket. Probably wrong, but...we'll see?   Ultra black on the china walls and 1/4" up onto the sides of the intake gaskets. Permatex High Tack (couldn't find Gaskachinch) on the head side of the intake gasket. I read wrong and it says you're supposed to put it on the mating surface of the head, not the gasket. Hoping it's like a PB&J sandwich where it doesn't matter what side the PB goes on so long as there's jelly. That crap is messy/sticky and I got a dab or two on the intake port openings, tried to wipe it off. Hopefully it won't be a big deal and will only aid in sealing.   Per instructions I left the intake (top side) of the gasket dry except for a light smear of RTV around the coolant ports. Wiggling the intake in there was a bear but I had help to free me of surrounding wiring/stuff but I was basically able to set it straight down lined up with the bolt holes.   I did not think to wait until the RTV skinned over but there probably was 5-10 minutes while it sat before installing the intake.   Bolts finger tight first. Then, followed the Chilton's manual pattern to snug them to 15 lb-ft.   Waited a little over an hour, and then did the final torque in sequence again to 35 lb-ft.   Yesterday I replaced the fuel pressure regulator and got my new "nut and bolt kit" (fuel lines) installed. Damn GM used security torx on the spider, which I don't have, so I got scammed at the local HW store for an off-brand security Torx bit set.   The new driver's door mirror arrived yesterday, so, there's a chance this thing could be running and road legal tomorrow? I don't want to get my hopes up.   This will be my first time stabbing a distributor, too. Although, lucky me, someone else marked the old distributor for removal previously, I did see that. (Someone's been here before!!). Engine is still at TDC so it *should* be just a matter of transferring the mark to the new dizzy and rotating it into place.
    • KARNUT
      2027 GMC Sierra: Official Discussion

      By KARNUT · Posted

      He has his dad’s newer truck he’s put away. He has several old cars he rotates between him and his family. I’ve seen a restored square body and a SS Chevy truck he’s sometimes drives. He did raffle off a new suburban recently. As much as he is watched if he drove new stuff as a rule we’d know it. It would be fine by me. I don’t care what people prefer. I got one more new one in me. I’d rather my wife get one. I can’t get her out of the Genesis. Don’t tell anyone. I want her to get an electric truck. I want to put a generator in the back. Just because. She hasn’t bit yet.
    • Atlas
      2027 GMC Sierra: Official Discussion

      By Atlas · Posted

      Yes, you must have seen my thread on the Blazer. HOT GARBAGE, but I love them anyway. I'm convinced every car guy has a soft sport for an S/T series somewheres. Probably even a Panther too, if I'm being an honest car guy. That doesn't mean they aren't junk. And they definitely don't get better with age. I sometimes play with old cars, but that's by choice. I don't rely on them and they aren't my everyday fleet.   Derek plays the common man on Youtube and that's no doubt where he started. Now he has Youtube money (and Motortrend, etc). You think his crews and his wife ride around in old beaters when they're chasing him and his wrecks across the country? No he's got newer and nicer stuff for that, you'll see glimpses of it in the footage.
    • Atlas
      2027 GMC Sierra: Official Discussion

      By Atlas · Posted

      You refuse to own anything made in this century yet you reportedly own... a 2007 Silverado, which is now almost 20 years old. The dissonance.... turn up your hearing aid?   You clearly don't understand the government contracting process, brother. We send people to die on front lines, keep the public safe, and make people's husbands, wives, children enter burning buildings with equipment from .....wait for it.....   ...the lowest bidder....   Just because something is used for a long time doesn't mean it's good. But it might be cheap and plentiful.   Please, continue to whine about new trucks in a thread dedicated to new trucks, which you've said you'll never own. We get it. Go tell everyone how you're stuck in time on a Panther forum. I mean, Jesus, an 86 isn't even one of the good Panthers.
    • KARNUT
      2027 GMC Sierra: Official Discussion

      By KARNUT · Posted

      It really is comical when people don’t agree or see the reason some people prefer the older vehicles. They become condescending. All the while they may be busting their knuckles on old vehicles. I have found memories of swapping out engines in my old GM cars in a weekend without much hassle. Unlike today. One wrong move a computer will shut you down. Even on something as easy as a brake job. There’s a pretty comical YouTuber called the car wizard. A garage owner who puts it all in perspective. Another Vicegrip garage that’s shows just how tough the old stuff is. 

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...