5.3L, want more power!!!!!!!!!

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Jun 20, 2013 | 05:10 PM

#61

N20zuki

TECH Enthusiast

Joined: Jun 2009

Posts: 653

Likes: 0

From: Elizabeth City NC

Quote:

Originally Posted by eds01sierra

yes we bought the heads, and they are high performance street heads, and a friend of mine had them and said after he put them on he had it dynoed and he gained about 45-50 HP

When people have something Dyno'd they don't use the term "about"... So what your trying to convince us is those cheap Chinese heads are going to bolt on more performance they CNC GM castings?

Kid you have a lot to learn...

Jun 20, 2013 | 09:48 PM

#62

rj2

Launching!

Joined: Feb 2011

Posts: 272

Likes: 0

From: indiana

Th8s is awesome. Lol. First time on here in konths and this is first thread I read...right after I caught up on project man van...anway I had a hard time following exactly what was bought. Got the cam and heads. Did u buy the shorty headers that everyone told u not to? Also have you made plans to get the truck tuned? Probably would have been better off getting work done on your stock heads for now instead of the ebay ones and what are you dremel tooling on or tb? Please post a list of what exactly youve bought so far. And if by some miracle and luck you get close to the 400 mark with this setup if you havent payed any attention to your tranny I can guess what your next thread will be. But before I offer any advice id like to know exactly what youre working with right now

Oct 18, 2013 | 09:15 PM

#63

cody.carnahan

Teching In

Joined: Sep 2013

Posts: 4

Likes: 0

Quote:

Originally Posted by dmelvin

You're going to spend $300 on a custom tune, 300 on a cam, not including everything needed for a swap including the gaskets, new crank bolt, etc. 500 for a set of LS6 heads if you're wanting a budget build.

Unless your dad's friend is building a turbo kit out of scrap pieces of stuff lying around, there is no way that he's getting 400 RWHP out of a 5.3 in a truck for $1000. Unless he's dropping a 150 shot of nitrous on one, but that can be done for less than $1000.

would ls6 heads work on a 5.3? what about not really goin for that much power but would ls3 heads and that cam work on a 5.3?

Oct 19, 2013 | 06:14 AM

#64

RezinTexas

TECH Fanatic

Joined: Jun 2011

Posts: 1,292

Likes: 5

From: Houston

Quote:

Originally Posted by cody.carnahan

would ls6 heads work on a 5.3? what about not really goin for that much power but would ls3 heads and that cam work on a 5.3?

go to LS1tech.com and search the Generation III Internal Engine section. This topic is well documented.

LS6 heads are an upgrade for a 5.3 (although some 5.3's came with 799 heads which are the same thing as 243)

LS3 heads will not fit on the small-bore 5.3 engine.

Jun 29, 2018 | 03:26 PM

#65

Grayson mcmillin

Registered User

Joined: Jun 2018

Posts: 5

Likes: 0

2000 5.3 vortec motor

I’ve got a highmileage (332xxx) never been rebuilt Chevy Silverado z71 4x4. Grandfather bought it with 80xxx miles back in 04. It’s been passed down and it’s a tradition in my family to build our first vehicle. It’s getting painted right now, and it’s going to cost 5 grand for me to get it painted. I would like to add more horsepower, maybe around 350ish. Since stock only has 285 horses. other than rebuilding the motor and transmission what would be good for it. Other than cold air intake and hotter ignition which will be done. I’ve even got a tuner for it if that helps

Jun 30, 2018 | 01:35 AM

#66

07NBSChevy

Launching!

Joined: Apr 2013

Posts: 252

Likes: 6

From: Las Vegas, Nevada

Not this thread again........

Also, I think he was trolling us. No pictures, no proof, insane numbers, no knowledge.

Grayson, Is there a reason there bud you didn't post your own thread.
No idea what you mean by hotter ignition, but that is not going to do anything for you. Best to make your own thread to get better answers.