I got this engine, i was told it was an LS3 from a 2011 Vette. Turn's out its from a 6.2 from an Escalade (Whats the difference?)
Regardless, this engines gonna replace my 1000mile 357 i just put in, and a T56 is gonna replace my tired 700R4.

I got the engine, all the sensors and accessories but after reviewing it, its all truck parts! What parts do i need to change to make this engine work in my car with the fuel injection?

Engines already getting a new cam and getting the displacement on demand deleted. Any other mods i can do to this engine? I want about 500hp-600hp.

After looking i see i need the LS1 pulley's, bracket's, water pump, oil pan, LS3 vette intake, Drive By Cable throttle body, retro-fit wiring harness, computer.

What can i use for exhaust manifolds that will fit?
Will my stock rad be enough with a set of dual fans from a fourth gen?
Do i need to notch my K-member for the Ls1 oil pan?
What motor mounts do i use?
Can i re-use my power steering pump, or do i need a 4th gen pump and custom lines?
Where can i get the brackets to mount the altenator low on the drivers side with the power steering pump above it and AC delete pulleys? Or can i actually use the truck front accessories?
What do i use for a fuel pump? My car was originally a TBI car (currently carb with a regulator). Do i put in a high pressure in tank pump and a corvette regulator? Do i need all new fuel lines through-out the car to support the higher HP?

Sorry for all the question's. I figured out the carb engine really easy for my car, but these LS engines are new to me with the fuel injection and all the other stuff, i am wanting to be confident when i do this swap and not run into major issues that are gonna set me back a long ways.

Also, with my T56, my car was originally a T5 car, can i use my existing pedals that are still in the car than or do i need LS1 car pedals? I have everything for my T56 but its an LT1 trans and i have everything for this trans. I am gonna buy the bellhousing, front cover and input shaft and convert it over, but will the hydrulics from the LT trans work with an LS clutch?

Sorry for all the questions.

 

look at sticky!!!!!
https://www.thirdgen.org/forums/ltx-...third-gen.html

 

I read the sticky, but i still have some question's un answered that i hope someone can answer.

 

You don't need a retro-fit wiring harness, but you will have to do some grafting into the 3rd gen system. Drive-by-cable and 58-tooth crank sensor will require a custom set-up and tune.

500-600 HP and exhaust manifolds are incongruent, unless you're talking turbo.

Should be, if the radiator is in good condition. I'm using 3rd gen radiator and dual fans, and although I don't make 500 HP, they've never gone to high that I'm aware.

Some have gotten by with 1" setback mounts and not notching the K-member. I can only see this working if you mount the engine to the K-member, then drop the car over the engine/K-member. It ain't gonna happen if you try to drop the engine in from the top.

You need a 4th gen PS pump. Custom lines not required.

F-body accessories do all this. The AC uses a dedicated belt, so deleting it doesn't affect the other accessories.

Walbro 255 with Corvette regulator in stock lines will support 500 HP.

There are many threads on this. The 3rd gen pedals will work with LS hydraulics with slight modification. Forget the LT1 T56 - it ain't worth it. Sell it for what you can get out of it to offset the cost of the LS1 T56 stuff that will make your life tolerable.

 

You read it, but did you comprehend it? re-read it and do some searching