Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

5.3 heads on ls1

Thread Tools
 
Search this Thread
 
Old Aug 9, 2008 | 12:25 AM
  #1  
whitew01ws6's Avatar
Thread Starter
12 Second Club
iTrader: (12)
 
Joined: Feb 2008
Posts: 407
Likes: 0
From: westminster MD
Default 5.3 heads on ls1

aight im jumpin around again on what i wanna do boost or NA CHEAP??

i have a set of 317 heads that i got for 40 bucks, i can get a set of 5.3 heads also for 40 bucks

my ??? is if i snatched those heads up and did some hand porting would it be benificial to put on my car with a 224 226 562 564 @114 cam

if so would there be decent gains, for some reason i really really really hate 241's why i dont know lol i just dont like em.

so what should i do with what i got


remember im a cheap *** k!!
Reply
Old Aug 9, 2008 | 12:33 AM
  #2  
NemeSS's Avatar
TECH Senior Member
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (127)
 
Joined: Sep 2005
Posts: 6,889
Likes: 9
From: Houston,TX
Default

the 5.3 are good for nothing more than cores, or if u need an emergency head
sell the 317's and offset the price of another mod with the profit made.
or mill the 317's .030 and install on your ls1
the 241 heads flow better than the 5.3 heads and have a 2.00 intake
5.3 heads have a 1.89 intake valve
all use same 1.55 exhaust valves
Reply
Old Aug 9, 2008 | 12:35 AM
  #3  
whitew01ws6's Avatar
Thread Starter
12 Second Club
iTrader: (12)
 
Joined: Feb 2008
Posts: 407
Likes: 0
From: westminster MD
Default

what englUsh
Reply
Old Aug 9, 2008 | 12:42 AM
  #4  
Pro52R's Avatar
TECH Enthusiast
15 Year Member
iTrader: (15)
 
Joined: Nov 2006
Posts: 708
Likes: 0
From: Jax, FLA
Default

Holy Sheet.....

Impliment the search button batman
Reply
Old Aug 9, 2008 | 12:46 AM
  #5  
whitew01ws6's Avatar
Thread Starter
12 Second Club
iTrader: (12)
 
Joined: Feb 2008
Posts: 407
Likes: 0
From: westminster MD
Default

hey eat it batman, i dont care about this "search" button

i wanna get advice specific to what iam doin is that so much to ask?

plus what happen if i have ??'s that arent answered on the "searched" field huh




huh?
Reply
Old Aug 9, 2008 | 12:52 AM
  #6  
blwn_00gt's Avatar
11 Second Club
iTrader: (17)
 
Joined: Mar 2006
Posts: 323
Likes: 0
From: Noff Cakylak
Default

i guess you would have to ask a question...lol
Reply
Old Aug 9, 2008 | 12:54 AM
  #7  
whitew01ws6's Avatar
Thread Starter
12 Second Club
iTrader: (12)
 
Joined: Feb 2008
Posts: 407
Likes: 0
From: westminster MD
Default

basically what would the results be GOOD OR BAD this is how i learn

like power ratings GOOD OR BAD what could i do with either head ya kno the " cool" stuff

i almost have a endless supply of stuff like these heads

i would have had a 6.0 but the starter was bent therefore bend the block with a lil crack
Reply
Old Aug 9, 2008 | 09:57 AM
  #8  
SOMbitch's Avatar
TECH Senior Member
iTrader: (8)
 
Joined: Sep 2007
Posts: 6,881
Likes: 3
Default

Ported 5.3's can be a nice bang for the buck head (see sig) but you will need to run 2.02'/1.575' valves to make it worthwhile.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Aug 9, 2008 | 12:20 PM
  #9  
BIG_MIKE2005's Avatar
12 Second Club
20 Year Member
iTrader: (116)
 
Joined: Jun 2005
Posts: 5,221
Likes: 1
From: Skiatook, OK
Default

I'm running port/polished stock cast 5.3 heads milled .018" with the bigger 241 head valves & I'm perfectly happy. Especially for the money I have in my heads compared to buying a brand new set.

Using the 5.3's will bump the compression & milling them will bump it even more. I have plenty of toqrue down low & they flow great to .590" lift which is perfect for me since my 224 cam has a .581" lift on each side.
Reply




All times are GMT -5. The time now is 08:41 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE