I am so jealous of this swap. I'm super glad it turned out good for ya. Whats also awesome is no one would notice by popping the hood.

I wanna see some dyno numbers and track times for this monster.

 

A little update on this.....after a few weeks of normal driving and some additional tuning its doing great. Extremely happy with the difference it has made.

Bought a Dynomax exhaust kit and TonneauSport bed cover for the truck for Christmas and got those installed.

I can't believe how much better the truck sounds now. Also found that some of the "engine noise/Sewing Machine/lifter tick" sounds I was still hearing a little bit of ws ere actually from a pinhole leak in the stock muffler. I can't believe how close the sound between lifter tick and exhaust tick are.

Next up will be some headers and y-pipe, then possibly a track day or a trip to the dyno to see how well its doing.

On another note: Gas mileage has suffered a bit. Went from averaging 16.8-17.5 MPG with the 5.3L to more like 14-14.5 MPG. I may try a few more tuning tricks to try to get there, but the narrowband O2s seem to want to keep it overly rich as compared to the wideband reading. 14.3:1 to be exact. Will be doing some research over on HPTuners.com to see if there is a way to adjust the switchpoints or something to lean it out a bit more. Last I checked, the newer ECM have the parameters listed, but changing them had no effect. Could always go open loop I suppose, but was hoping to avoid that.

Happy New Years all.

 

Hey ViaBellator I have a couple questions for you I regards to your motor swap. First all what year did your 6.2l come out of..?.
Second did you have to modify any of the wiring or replace the computer.? An or was it plug an play.??
I ask this simply because I just recently rebuilt my 5.3l an am not impressed with my power it's good but there is always room for improvement.
I'd like to get a 6.2l an go through it an do it right lunati crank an rods, edelbrock heads a fat crane cam and I'll be looking for a twin turbo kit if there is one out there.
I'll be shooting for the 1000hp mark.

There's no replacement for displacement.

 

Hey Boyd,

I was told it was from an 07 Escalade with 60K miles.

No special wiring was required, and the existing computer was used. So it is essentially just a plug and play swap as far as bolting it in goes.

Custom tuning is required though. Especially with the other things you mention you want to do.

I have been working steadily on getting mine dialed in since the swap and it's 99% there. Just a minor hot start issue when the outside temps are below 45 degrees or so.

 

vvt wiring and everything was the same?

 

07-08 (non 6.0/6.2) isn't VVT so that wiring harness isn't there

 

okay, but it's out of a 07 and it is a 6.2 with vvt, that's why I was trying to figure out what was done with it, I only ask because I need a wire harness for my 6.2 and trying to figure out what I need

 

If you are planning to keep vvt then you have to do a harness swap.

Most people just delete the VVT/DOD when doing a motor swap

 

Right.

The motor did have a single bolt cam with a phaser on the front. I removed that and went with a custom three bolt setup and deleted VVT altogether. My pickup didn't have any extra wiring for VVT, but it did have DOD. I just left the DOD harness unplugged and turned DOD and all the associated codes off in the ECU.

 

Another update:

Finally broke down and ordered some headers. Hoping to get them in next weekend. Based solely on the fact that on a generally stock motor they pick up 25-30 HP, I figure I'm looking at about 45-50 HP since my cam really isn't optimized for stock manifolds and should REALLY be able to breathe better with the new headers on.

Thinking about taking it to the track on the 28th (pulling my GTO on a trailer...LOL), but who could pass up making at least one pass in it after all the work? Certainly not me.

Will post back with results when I have some.