custm72chevy

when did they finally put the aluminum 5.3L blocks in the trucks and SUVs? im lookin to stroke it..also thought about the 6.2l?? idk let me know what yall think cause im newer than most to the LS series engines

5.3LJimmy

iTrader: (10)

I think they started in 2004, but not positive. The Trailblazers and Envoys with the optional V8 all had aluminum blocks, but the aluminum motor was optional in the silveradoes and sierras(dubbed 5.3HO). I don't think any full size SUV's ever got the aluminum 5.3.

silver-mod-o

iTrader: (15)

05 and 06 Chevys and GMCs with the Z71 package, this was the L33 motor, it came with the good 243/799 casting heads and 10:1 compression... Putting a stroker crank one would be nice!!!

custm72chevy

alright..thanks alot yall


idk if yall will find this funny..but im goin to NADC and this guy was talkn straight **** to this other dude...about how hed pull him 4 lengths..yadda yadda yadda..long story short i asked what each of them was runnin..one was runnin an 83 c-10 2wd with a 305..and the other a 99 cobra with some decent mods. and dude with the 83 c-10 said he had a stout rear end..i was like..what size and ratio you runnin.."a 10 bolt with 2.73 gears" i mean im a chevy guy all the way..but i died laughin and just walked away at that point

5.3LJimmy

iTrader: (10)

Maybe the c-10 has a 200 shot.

custm72chevy

naw it was stocker then hell..he even said that..but he was proud of the missin grill! guess its his idea of ram or somethin..idk..lol but i need your opinion..would you use the 5.3L(i like it cause of the availablilty) or an 6.2L..im stuck between the two

chevyls10

iTrader: (2)

07-08 fullsize trucks that are 4x4 with the 5.3L no matter what trims or options. The 2wd trucks got the iron block

5.3LJimmy

iTrader: (10)

If you can afford it, you should go for the 6.2. Look at it this way: If you got a 5.3, bored it to it's max(3.905) and installed a 4" crank, you would have a 6.28 liter. That is not much more than the starting point of the 6.2, will cost quite a bit to achieve, and will be maxed out. You can install the 6.2 as is and have room for growth in the future. As an added bonus you also get some of the best production heads GM has ever made.

erskine

iTrader: (5)

my 08 does and has 243 heads on it also

custm72chevy

alright..sounds good =) im gonna start my search from some used blocks

slydwys

iTrader: (2)

I've got an aluminum 5.3 that is supposedly out of an '02 avalanche 4x4. I was under the impression that it was an option, and it just has the standard 5.3l heads. Nothing fancy.

Tom@SpeedInc

iTrader: (5)

Almost bought me a Colorado with a 5.3, darn; it was $5500 more then the same colorado with I5 instead.

deuce_454

if you intend to stroke, upgrade or otherwise go fast.. i would start with a 4 inch bore engine... before you but the aluminum 5.3, mashine it and add stroker crank etc you are out as much money as a new or slightly used ls3 shortblock...

i mean a brand new ls2 6.0 aluminum block is 1100 bucks... and it will take l92 heads... you are throwing away horsepower starting with a 5.3

Ls1Rx-7

iTrader: (4)

you can get those engines complete for 600-1000. accessories and everything else adds up so its much cheaper to get one of these compared to an ls1.

deuce_454

thats true... but the second you start talking, boring, stroking etc.... its the wrong engine to start out with, if you are going to run it as is.. its a great deal... if you want to make the most power for your money you should do a 4 inch bore engine with l92 heads as a minimum

custm72chevy

yeah i agree with yall..ive consulted a few specialists and they said go bigger..so ive found a LQ9 block from a fellow member for 200..im pickin it up next weekend..would yall go with the FBW or a manual cable for the TB? btw im boring the LQ9 .30 over and puttin a 4" crank in it so i can get it up to a 408..what yall think?