bruner18

i have a 05 silverado with a 5.3 and im wanting to put a bigger motor in it maybe an lsx but im not wanting to run methanl to cool my system. is it possible to put an lsx in my truck without to much hassile. and if so what all do i need to swap?

viciousknid

iTrader: (8)

a 5.3 is an LSX engine. You can mod the 5.3 or go to a 6.0, bore to 370. Get Ls1, LS6 LS3. Any of em. You really only need methanol for cooling if you plan on running Forced Induction with a lot of boost

bruner18

i was kinda wanting the 6.0 with a supercharger but being that i still want an everyday driver i didnt want to go over board. and being that i have a 5.3 is there any electrical problems im gonna run into? or should i just stick with the 5.3 and build it?

budhayes3

iTrader: (19)

5.3, 6.0, LSX...direct swap, the outer dimensions of the block are the same, you'll just need the PCM tuned accordingly

viciousknid

iTrader: (8)

plenty of guys DD motors with Forced Induction. You could mod the hell outta your 5.3, Put f/i on it. Buy a 6.0 to mod and swap it in with the appropriate PCM tuni.ng.

You can do whatever you want to any of those engines and drop them in but no matter what you do to the engine you must have your PCM tuned accordingly. there are guys on here running 600+HP F/I 5.3's if you want to just boost what you have.

Just browse through the forum and do a lot of reading to decide what you want to do. there are threads listing gas mileage with mods, HP/tq, Cam selections, tuning. Everything you need to know is here you just have to take some time and do some reading. It's much faster than posting up questions and waiting for responses when everything has already been answered over and over again.
Find out what route you want to take, what power you want to make, what your goals are, and what your budget is and then we can help you narrow things down.