Page 1 of 2 12 LastLast
Results 1 to 20 of 25

5.3 or LS6 style Heads

This is a discussion on 5.3 or LS6 style Heads within the Internal Engine forums, part of the LSx Technical Help Section category; Hey, To all that know their stuff. I am fixing to buy a head cam package. What are the 5.3 ...

  1. #1
    Member ksupersport02's Avatar
    Join Date
    Nov 2007
    Location
    Villa Rica, Georgia
    Posts
    105

    RED
    2002 SS Camaro LE

    5.3 or LS6 style Heads

    Hey,

    To all that know their stuff. I am fixing to buy a head cam package. What are the 5.3 heads that i keep seeing. Are these not truck heads. And if so, why would you want to use these smaller heads vs a 5.7 ls6 head. I am fixing to buy and dont want to sound stupid when i place my order. Also what difference is there between the ported, stage 2 and stage 3 heads. I want a very thumpy cam, looking at the MS4, due to the fact that car is not daily driver. Any way, i have seen thousands of threads on here about these topics, but no one really answers them.. Hopefully, all of the tech gods will read this.

    Any help is greatly appreciated.

    KD
    Kenny D
    2002 SS LE #2505

  2. #2
    Member WARP211's Avatar
    Join Date
    Feb 2007
    Location
    FairField, CA
    Age
    36
    Posts
    398

    RED 35TH ANIVERSARY PKG
    2002 CAMARO SS 35th LE

    5.3L heads are truck heads. and from my understanding they have better flowing and port capabiltes on them than the 5.7L Bascially the 5.3L are better for porting than the 5.7L head. check out TEA 5.3L vs 5.7l vs LS-6 heads.. check out their web site.

    http://www.totalengineairflow.com

  3. #3
    Senior Member INMY01TA's Avatar
    Join Date
    Jan 2006
    Location
    The great red state of MD.
    Posts
    5,755

    Black
    2001 Trans Am (sold)

    5.3 heads raise the compression and work well on a 346. Hate to redirect you to another site but read some good threads lately on this.
    http://www.ls1tech.com/forums/showthread.php?t=839480
    http://www.ls1tech.com/forums/showthread.php?t=819108

  4. #4
    Member ksupersport02's Avatar
    Join Date
    Nov 2007
    Location
    Villa Rica, Georgia
    Posts
    105

    RED
    2002 SS Camaro LE

    Ok, Those are great articles . They help clear up alot.
    One more question. Will the MS4 or other big thumpy cams work good with these or should i just get the patriot LS6 heads.

    Thanks

  5. #5
    Member ksupersport02's Avatar
    Join Date
    Nov 2007
    Location
    Villa Rica, Georgia
    Posts
    105

    RED
    2002 SS Camaro LE

    Hey also cant seem to find any information referring to diff between Stage 1, 2 , 3 heads. Are the flow numbers diff or hp gains.

  6. #6
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
    Posts
    22,520

    98 Formula
    06 duramax

    stage number reflects the amount of work done to the heads such as port, polish, larger valves, and things like that. The higher the number the more the heads have been worked.

  7. #7
    Visualize°Design°Create SSwt00SS's Avatar
    Join Date
    Dec 2005
    Location
    Dallas, TX
    Posts
    9,287

    '12 Silver SS 1SS
    '00 Black SS #8617

    I have Ls6 Style Stage II heads from Patriot Performance. The are the old 6.0L truck castings welded up to 59cc chambers (2.02"int/1.57"ext). they happened to increase my C/R to about 11.5:1.

    the difference between stage II and III heads from Patriot are that the stage III are made for larger displacement engine like a 383, 402, 408, etc. the stage II heads are perfect for any stock or close to stock bore engines.

    what you need to have in mind is the size of the 'CC' chambers as you will need to make sure that you wont have piston to valve clearance issues. the smaller the 'cc' chambers the chances that you will run into this problem increase. if that is the case you will have to flycut your pistons to get the proper clearance.

    my setup is a little 224 cam and the Patriot stage II heads. with that setup I am putting down 437/404 to the wheels. i also know for a fact that with this set up i am putting down more power (HP/TQ) than a fellow member who has 5.3 heads (1.5 stage) and an MS4. both our cars are m6...

    my dyno sheet from Dec 2007 (yes i know the year is wrong on the sheet)...my old numbers were 444/395 before simply swapping from a catback to TSP TD's (no retune)...


    old dyno sheet from August 2007...SLP LM catback
    Last edited by SSwt00SS; 01-09-2008 at 06:43 AM.
    2000 SS - The Wicked Witch: °°Cammed 'n Slammed°° 458rwhp/410rwtq
    Quote Originally Posted by Bowtie_girl30
    I was hoping to just hump her up the exhaust cause she is so damn sexy....
    "Never argue with an idiot. They drag you down to their level, then beat you with experience."

  8. #8
    Member ksupersport02's Avatar
    Join Date
    Nov 2007
    Location
    Villa Rica, Georgia
    Posts
    105

    RED
    2002 SS Camaro LE

    Ok thanks, thats the best explanation i have heard
    So what CC should i get to avoid clearance problems. I have seen the 64cc. Will these be a problem with the MS4 cam. I obviously have a stock 346. headers will be changed at the same time, Hopefully the group purchase will come through...

  9. #9
    Senior Member INMY01TA's Avatar
    Join Date
    Jan 2006
    Location
    The great red state of MD.
    Posts
    5,755

    Black
    2001 Trans Am (sold)

    Quote Originally Posted by ksupersport02 View Post
    Ok thanks, thats the best explanation i have heard
    So what CC should i get to avoid clearance problems. I have seen the 64cc. Will these be a problem with the MS4 cam. I obviously have a stock 346. headers will be changed at the same time, Hopefully the group purchase will come through...
    If your dead set on the MS4 I'd call Texas Speed and have them pick the best LS6 heads for your 346.

  10. #10
    Member maxpit's Avatar
    Join Date
    Jan 2007
    Location
    San Diego, CA
    Age
    36
    Posts
    251

    pewter
    02' Z28

    LS6 heads r the way to go. Awell ported ported LS6(not even talking about race porting) will perform just as good as a set of AFR's.

  11. #11
    Visualize°Design°Create SSwt00SS's Avatar
    Join Date
    Dec 2005
    Location
    Dallas, TX
    Posts
    9,287

    '12 Silver SS 1SS
    '00 Black SS #8617

    i love my patriot heads. i got them brand new for $900 off a member of this site. compared to the price of AFR's i couldnt justify spending $1000+ for only 5-7rwhp difference...

    im not saying AFR's arent good, but out of my price range and sometimes the price range of many...

    personally i would go Ls6 heads and have them milled down to increase your C/R. then find a good cam or even a custom grind cam that will work with your setup without having to flycut your pistons...

  12. #12
    I'm running Texas Speed PRC stage 2.5 5.3L heads and the MS4 cam. They work EXTREMELY well together, and made significant more power than my old very expensive "best money can buy" setup from years ago. THe 5.3L truck heads give a higher compression ratio, which the bigger cams absolutely love. However I don't believe you can run this combo without cutting the pistons. The PRC stage 1 LS6 heads would clear, but you're leaving a lot of power on the table with that combo. My car runs high 10s on stock shortblock naturally aspirated. Sounds good too: http://s165.photobucket.com/albums/u...95_toMPEG1.flv

  13. #13
    Senior Member Wheeler99WS6's Avatar
    Join Date
    Jul 2006
    Location
    indiana
    Age
    35
    Posts
    1,018

    black, 05 Roush
    black, 99 T/A WS.6

    I havent done heads and cam just yet so I am not sure but I always heard that if you were going with FI then get the 5.3L heads but if going NA then get the LS6 heads.

  14. #14
    Quote Originally Posted by Wheeler99WS6 View Post
    I havent done heads and cam just yet so I am not sure but I always heard that if you were going with FI then get the 5.3L heads but if going NA then get the LS6 heads.
    No no no. 5.3L heads are better suited for an NA application due to the increase in compression ratio. An LS6 would work, but again they increase compression ratio as well. For a boosted engine lower compression is better. So a 6.0L is more ideally suited, and that's what most guys use

  15. #15
    Member ksupersport02's Avatar
    Join Date
    Nov 2007
    Location
    Villa Rica, Georgia
    Posts
    105

    RED
    2002 SS Camaro LE

    Quote Originally Posted by Marc 85Z28 View Post
    I'm running Texas Speed PRC stage 2.5 5.3L heads and the MS4 cam. They work EXTREMELY well together, and made significant more power than my old very expensive "best money can buy" setup from years ago. THe 5.3L truck heads give a higher compression ratio, which the bigger cams absolutely love. However I don't believe you can run this combo without cutting the pistons. The PRC stage 1 LS6 heads would clear, but you're leaving a lot of power on the table with that combo. My car runs high 10s on stock shortblock naturally aspirated. Sounds good too: http://s165.photobucket.com/albums/u...95_toMPEG1.flv

    Car does sound good , thats exactly what i was looking for. However, did you have to flycut your pistons or did you have a shop do the work. A buddy and i will be installing these. Should i just ask the guys at TS. I have emailed them several times about packages, but dont ever get a response.

  16. #16
    With my particular setup I did have to cut the pistons. But that's due to the fact that I had the heads milled down to 59cc, ran a thinner than stock head gasket at .040", and had the cam ground on a different LSA than standard. Other than the tune, all work was done by me.

  17. #17
    Member ksupersport02's Avatar
    Join Date
    Nov 2007
    Location
    Villa Rica, Georgia
    Posts
    105

    RED
    2002 SS Camaro LE

    awsome.. i figured you had them milled or something. That means i will prob be alright as long as i run 64cc or so. You said you have the MS4.. what LSA did you get?

  18. #18
    Quote Originally Posted by ksupersport02 View Post
    awsome.. i figured you had them milled or something. That means i will prob be alright as long as i run 64cc or so. You said you have the MS4.. what LSA did you get?
    110 LSA. GMHighTechPerformance did a PRC stage 1 LS6 and MS4 cam buildup last year. They did NOT cut the pistons, and had outstanding results. I believe they sink the valves into the head a little on the LS6 stuff for PTV clearance. Detailed buildup with all power figures can be found here: http://www.gmhightechperformance.com...ech/index.html

  19. #19
    Member ksupersport02's Avatar
    Join Date
    Nov 2007
    Location
    Villa Rica, Georgia
    Posts
    105

    RED
    2002 SS Camaro LE

    Ok nice. Did TSP give you everything you needed in a package.. Or did you have to piece mill.. Also ball park,, not being nosy,, how bad did they set you back?

  20. #20
    Senior Member Wheeler99WS6's Avatar
    Join Date
    Jul 2006
    Location
    indiana
    Age
    35
    Posts
    1,018

    black, 05 Roush
    black, 99 T/A WS.6

    Quote Originally Posted by Marc 85Z28 View Post
    No no no. 5.3L heads are better suited for an NA application due to the increase in compression ratio. An LS6 would work, but again they increase compression ratio as well. For a boosted engine lower compression is better. So a 6.0L is more ideally suited, and that's what most guys use
    You know what that does sound right. Thanks for clearing up my mispost though. I hate to steer some one in the wrong direction.

Page 1 of 2 12 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Replies: 18
    Last Post: 01-25-2014, 04:54 PM
  2. Replies: 0
    Last Post: 03-16-2011, 10:30 AM
  3. Replies: 0
    Last Post: 02-04-2011, 03:00 PM
  4. Older Style TSP PRC Stage 2.5 5.3l Cylinder heads
    By johnnybz28 in forum Parts For Sale / Trade
    Replies: 22
    Last Post: 06-29-2010, 08:00 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •