2010 L99/6L80E swap into 95 C1500 Silverado
 

Finally pulled the trigger on doing an LS swap and wanted to share the build. I hope any or all of this information may help someone else.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

Here is a snapshot of the odometer prior to pulling the 5.7L and 4L60E that was in the truck.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

The view under the bonnet before the swap.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

Out with the old... she ran just fine, but it was a nickel and dimer.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

As you can see, it was time for a cleanup at the very least.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

Here is the donor powerplant. It is a 6.2L, L99/6L80E from a 2010 Camaro SS with a little over 14K miles.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

Well that should really wake her up! Good luck with the swap.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

This was my first experience with any wrenching on an LS. I will never go back! The pictures here are of disassembly to prep for the oil pan kit from BRPhotrods. I labeled all the connectors due to my noobness and snapped pics of all the ground terminals and their placement for the reinstall later down the road.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

ls1Nova71, she is really awake. The truck is done, just trying to get caught up on all the build thread...:devil:

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

A few more pics of the disassembly for the oil pan replacement.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

Here is the oil pan kit from BRPhotrods. Had to buy the Hummer H2 pan with the VVT machining. There was a valve in the old pan that I had to install in the new one. It was shipped with just a plug, not mentioned in the instructions...

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

Prepped the engine bay. You will notice the coil spring on the floor. I dropped the lower control arms to get access to the engine mount bolts. I used the engine and transmission mount kit form BRPhotrods also along with the mid-length headers they offer.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

Needed to delete the external oil cooler, so bought a block plug and installed. Also installed the BRPhotrods motor mounts. I installed the mounts on the block backwards to leave the block farther forward first. Then I could safely re-chain the engine hoist to the front only since I had a crossmember to support the transmission in the back. More work, but I felt safer doing so with the investment money for the swap.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

Here it is mounted correctly.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

Here is the transmission crossmember mounted.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

Only one spot on the trans tunnel that needed some relief with the 6L80E. It is right at the lower spot weld seam on the firewall.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

Here she is going back together. Just the intake and coil packs for now until more parts come in.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

LSbrackets power steering and alternator kit came in. Here it is installed. Later in the thread there will be pictures of the custom power steering hoses.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

Since the tailshaft has the flange yoke I had to order an adapter from Gforce Engineering to mate the Spicer flange yoke U-joint adapter. Installed to verify fit.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

Old fuel tank came out for a new setup. New tank, new sender, new in-tank fuel pump, new filter/regulator and hose kit from BRPhotrods, etc. The internal pump is Aeromotive and loud-ish, but much more quiet than an external pump. Had to use inverted flare o-ring to AN style adapter fitting on the sender for the new lines.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

Running a Speed and Performance coolant temp sensor adapter for the instrument gauge at the moment, but a word to the wise... at idle I calibrated it based on the ECM temp by putting a resistor in series, but while driving enough air passes over it to cause the gauge to read 30 degrees too low. I will keep you posted on the resolution. Already have planned to purchase a 98 Camaro/Firebird LS1 ECT sensor with the 3-wire connector to replace the stock 2010 L99 sensor in the block. (This is the last hurdle to getting the stock gauges all to read correctly)

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

This is the reason why stock manifolds won't work. The flange rests on the frame very close to where I cut it out once already for the old long tubes from the original Gen III engine.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

The BRPhotrods mid-length headers were the first headers I EVER installed that took no special tools AND had no clearance issues. These things were made for this engine in this truck.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

Went shopping at the local parts store to find the radiator hoses needed for the job. Here is what I came up with... The upper radiator hose was swapped end to end after installing the air cleaner later in the build.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

Removed the intake and installed another adapter from S&P for the oil pressure gauge. Also installed the transmission cooler adapter fitting and the transmission line adapter fittings to run -6 AN hose left over from the fuel line kit. Installed the brake booster sensor too to keep the swap close to stock for the engine.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

Next was the R4 A/C compressor install using LSbrackets made for such a thing. Installing the old compressor was done to keep the functionality of the interior. I did ponder using the new one that came with the donor motor, but alas...

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

Up next, electric spaghetti! I modified the truck harness before this point to remove all the unnecessary circuits. No small task, but my profession is as an jet engine test cell technician with a background of fixing AH-64D/E Apache Attack helicopters helps.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

I used the schematics from the 2010 Camaro (http://www.revbase.com/BBBMotor/Wd) as the basis for modifying the harnesses. I probably went a little over kill on how many fuses and relays I used, but I wanted the poor fella down the road that might have the pleasure of owning this truck to not give up on fixing it if a problem arises. So, the plan was for 15 fuses and 7 relays as the brains of the operation to support the new harness mod. I am happy to report that no electrons were killed in the making of this harness mod.:uhmk:

Also, want to throw a big thank you out to http://lt1swap.com/wiringharness.htm

Not the end all for what I needed, but he helped push me in the right direction until I found the schematic database link at the top.

I will attach a swap spreadsheet I used throughout the process at the end of the thread. It has all the wiring info and part numbers used for the swap.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

There were a couple more things to iron out before applying power and attempting to start it. The gas pedal assembly is drive by wire. Had to make a mount for it to be in the correct position to drive and have WOT.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

Transmission cooler lines finally finished along with a passenger side shot of the cooling fans. A 2008 Hummer H2 shifter cable bracket and lever were installed to work the stock cable on the column for grinding gears. A Denny's driveshaft with a slip yoke was installed. It also got a new 1350 Pinion Yoke and seal for good measure.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

Had to install custom made power steering lines after many attempts to reuse the factory hoses. Had to take the pulley back off to get the fitting started and tightened.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

Next up was figuring what air cleaner to use. Ended up buying a Spectre unit for the 2010 Camaro SS with the L99 and made a bracket out of 4" exhaust clamp saddles and some metal bar stock from the hardware store.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

Here are some pics of the electrical panel and the process of building it. I made the harness too short the first time, so had to splice in extra wire to fix it. Rookie mistake, measure twice...cut once :banghead: I used garage door railing as the mounting structure on the inner fender. Plexiglas is under the fuses and relays to help with short circuit protection.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

Had to figure out how to get the neutral safety switch, the backup lamp switch, and the gear indicator switch to work with the 6L80E. The top picture is how it all fits in relation to size if using OEM stuff. The shaft on the shift lever on the transmission isn't long enough for the old 4L60E stuff so...

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

The answer: :bann:

GSS-2000 from Dakota Digital with lots of mods...

Had to modify the brackets to mount it.

Had to make an interface circuit between the "decoder" from the RVDT on the transmission and the logic circuit for the gear lamp indicator in the truck.

I will post all my schematic support at the end of the thread, by the way, we are almost there!

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

Next up is the ABS speed signal for the rear tires. Used to be a 40 tooth reluctor ring and pickup in the tailhousing of the 4L60E. Not so much on the 6L80E, much less that it talks over CANbus...

Jagsthatrun 40 tooth reluctor wheel kit to the rescue :metal:

I had to over size drill the holes to line it up on the pinion yoke. The mounting bracket for the sensor had a hole drilled to position it correctly on the housing and a plate welded to the bottom to provide a spacer and keep it level where it mounts. I still need to take a final photo of that for you all...

I also put a picture of the resistor mod I did to the temp gauge on the back of the instrument panel. It is 47 ohms, which is perfect for idle while sitting still, but 30 degrees too low for driving down the road. As I mentioned earlier, the 98 Camaro/Firebird LS1 ECT sensor will be going in next to finish the project off.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

I used HPtuners to get it running, but still need to do a little gear manipulation for it to feel right while downshifting. Tried for 2 days without getting fuel to start it before I figured out starter control had to be disabled in the tune.

I will upload some video to youtube and post the links here when done.

Here are the files I promised during the thread to share. If you have any questions on the information I will help as much as possible.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

More of the files for the swap...

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

Interface schematic, and the diagram for the 4 wires from the truck and the logic for pulling the GSS-2000 to ground(sink) for the circuit.

Re: 2010 L99/6L80E swap into 95 C1500 Silverado
 

YouTube links:

5.7L before pulling for the swap
https://www.youtube.com/watch?v=QW_eXWr7ues

Open headers in the shop after the swap
https://www.youtube.com/watch?v=LoDR37qwzlM

Maiden voyage to hook the exhaust back up
https://www.youtube.com/watch?v=icAH20Fd-Uo

Enjoy :burnout: