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03
Jan
Jan
Customer Cars
760 rwhp 6.2L Swapped Twin Turbo Sleeper 4WD Silverado!
This has been a very special build for us. If you’ve ever dreamed of going absolutely crazy on a build, and making something absurdly fast that was never designed to – check this one out!
Just imagine the look on that proud Z06 owners face when you demolish them from a light in an unassuming Silverado.
This truck started life as a 2017 Silverado 4WD 5.3L V8 single cab pickup. Since, we had a customer looking for a 5.3L engine for his Hot Rod build, we used this as an opportunity to upgrade this truck to the 6.2L that was never offered in a single cab Silverado. Once we took delivery of our brand new 6.2L – it was time to open it up and install a set of Diamond Pistons, Oliver Rods, an LT4 Crank, GPI Heads, and a custom cut GPI Turbo Cam.
Next, it was time to install the new power plant, and bolt up a Armageddon Twin Turbo System. Due to the fueling limitations of the DI motors, we opted to also upgrade to the LT4 pump and injectors, as well as a direct port methanol system from ProMeth.
After wrapping it up – we strapped it to the dyno, and were pleased to see it made 760rwhp on the dyno, and is proving to be a formidable opponent to most high performance cars on the street.
Check out these videos to see more…
Ready to start building your L83 or L86-powered truck?
The performance truck market continues to grow at a staggering rate – with huge popularity going back to the early LS trucks.
The L83 (5.3L) and L86 (6.2L) performance potential is especially promising due to these modern generation LT engines offering so much more power and technology than its predecessor in a factory trim. For instance, a L83 powered 5.3L truck starts out 50 HP stronger than it’s 5.3 LS counterpart – giving you a much better starting point with these engines!
That being said – there is always room for improvement right?
I have a ‘15 Silverado 6.2 with the 8l90 that is putting down 680 rwhp at the moment…We have a Pro Series Circle D converter in it as well. I’m having issues keeping the transmission together. Have you guys had any issues like this…are you upgrading the transmission as well when you do the builds?
I am in this situation as well. 750 at the wheels and 37″ tires is taxing transmissions. Also running a circle d 258mm triple disc and it has always slipped the tcc in upper gears. My fluid temps reflect this and I am thinking its caused accelerated wear on the clutches. I’m swapping in my third 8l90 at the moment and I’m going to go back to a stock converter for the time being.
I was wondering if I could drop the 6.2 in my 2012 Silverado Reg Cab?
When doing the cam/heads package, what else needs to be done to the 6L80 transmission besides the convertor? I know from experience these transmissions have enough trouble holding up to bone stock engines over 100k miles.
Brett, in our experience they hold up pretty well with lower mileage. Over 100K miles, you may want to consider building the trans – which typically, you’d be looking around $2200-$2400 for parts/labor on the trans build. Of course, if it turned out there was something damaged, etc… inside the trans, the cost of that would increase.
If you already have the 6.2 l how much would this build cost?
There are so many potential configurations for a build like this – it would be best to reach out to us at [email protected] or call us at (501) 985-4947.
I have a 15 suburban 5.3l I’d like to make a sleeper. I’m a GM tech and just looking to do the work myself.
I would suggest doing a cam/head package. I would stick with a low lift cam, like our L83 STG 1 cam, which is designed to work with the factory torque converter. The cam and heads (we have a great L83 head porting program) will help increase both the HP and torque, which will help with towing.
Will the 6.2 work with the 6l80 in the reg cab? Are the harnesses the same for the L83 and L86? Is there anything extra needed for just a straight 5.3 to 6.2 swap aside from recalibrating the ecm? Thanks.
6.2L will drop right in there. Just make sure to run the 6.2 direct injectors. Tuning is required. Very easy.
Hi i would like to do a build like this. I havea 17 silverado 1500 crew cab with the 6.2. How many hours of labor did it take to do everything.?
Hey Adam. If you have a moment – reach out to Aaron at [email protected] or (501) 681-4947. He can discuss the options of the build and get you a quote!
What are you using for Fuel? The highest Octane I can get in my area is 91. Also, you mentioned the Cost was around $30k for this Build, does that mean you offer to do this for anyone for $30k? Thanks, chad
This particular truck was tuned on 93 octane. Feel free to give Aaron a call or email, and we could discuss a similar build for you.
501-681-4947 or [email protected]
How much does a build like this run for…
2018 gmc sierra single cab…
It could vary wildly based on configuration. A spec like this would be around $30k w/ the 6.2L swap. You could safely make a little less power w/ the 5.3L and save quite a bit.
This being said – we don’t cut corners, so this is the cost of doing it right. Many will say it “could” be done for less – and we agree.
I disagree I have a twin turbo 5.3 with crew cab w/6” lift and 35’s 4×4 and I have 20k since the build. The 6 speed has held up great and I can demolish any diesel build I’ve raced and most coupe corvettes etc… it’s more than enough power, yet in the time I’ve had mine I’ve seen 3 different 6.2s blow up. I was contemplating the swap and everything I’ve seen in real world testing points to the 6.2 not holding up long time… Although with your internal work this might be the exception, but I can’t imagine needing more power as I can break my larger tires loose going 40 mph and smoke pretty much any mustang on the road.
You can do a high quality build with either engine. The “cutting corners” comment was in regards to the quality of the build – not engine choice.
I’m wanting to do the same 6.2 swap into my 5.3 2015 Silverado I have a complete 6.2 with the 8l90 but there’s no info out there on what is needed to swap. Did you guys have to reflash the ecm and the for it to even turn on and run in the truck? Would love to just take my truck to you guys but I’m in Houston, so any info you could share with me on this would be great.
Just need to build a calibration file for that application. The 5.3 operating system will work fine.