Results 1 to 9 of 9
  1. #1
    casual poster
    Join Date
    Feb 2017
    Location
    Melbourne
    Posts
    257

    Default LS3 6.2 Cam Selection (821 heads)

    Ok LS gurus, Iíve got hold of a standard VF LS3 sedan with an auto trans as the new family weekend cruiser.

    Iíd planned to leave it stock...but Iíve got hold of a full twin DiFillipo exhaust system including extractors, OTR intake cheap that Iím going to fit.

    While Iím at it Iím looking at fitting the biggest cam I can get away with without changing the converter (boring and girly I know, but itís the family cruiser)

    And... while Iím at it I had thought of getting the heads ported and tickled up a bit to make the most of it.

    Iíve looked at a few cams around:
    215-218 @.050 Inlet
    225-231 @ .050 Ex
    Around 600Ē lift
    and 112-113 lsa

    Thoughts on cam selection and heads please...

  2. #2
    Do you ever leave? paulzig's Avatar
    Join Date
    Oct 2008
    Location
    Gold Coast
    Posts
    15,211

    Default

    Yeah something like that will work, large port heads dont need overcamming so. 215/230 113LSA .600 lift If you want to stop it revving up take some exhaust duration out.

  3. #3
    casual poster
    Join Date
    Feb 2017
    Location
    Melbourne
    Posts
    257

    Default

    Quote Originally Posted by paulzig View Post
    Yeah something like that will work, large port heads dont need overcamming so. 215/230 113LSA .600 lift If you want to stop it revving up take some exhaust duration out.
    Thanks Pauly, is something like this pushing the friendship on too big?
    219/235 on 114 LSA and 578 & 592 lift

  4. #4
    Do you ever leave? paulzig's Avatar
    Join Date
    Oct 2008
    Location
    Gold Coast
    Posts
    15,211

    Default

    Well, dont run more lift on the exhaust but something like that. You have to make sure its a proper exhaust lobe. I'd go a touch less due to the stock stall and converter, you'll still be able to go 6500+ RPM.

  5. #5
    LS1 POWERED 2AVOID's Avatar
    Join Date
    Mar 2011
    Location
    Western Sydney
    Posts
    1,801

    Default

    VCM have a range of std converter cams to pick from that work . Ports on heads are bigger than most , porting won't be necessary

  6. #6
    casual poster
    Join Date
    Feb 2017
    Location
    Melbourne
    Posts
    257

    Default

    Quote Originally Posted by paulzig View Post
    Well, dont run more lift on the exhaust but something like that. You have to make sure its a proper exhaust lobe. I'd go a touch less due to the stock stall and converter, you'll still be able to go 6500+ RPM.
    Pauly, you thoughts on these please?

    I found these on Comp Cams site:
    54-453-11 (269LRRHR13)
    219/235 @ .050 .607/.621Ē on 113 LSA
    Has a fair bit lift, especially on the Ex. Will need some good springs to get enough clearance and prevent coil bind.

    It has a little brother more suited to cathedral port heads that a few people seem to have used in square port LSís with good results
    Comp Cam 54-456-11
    219/227 @ .050 .607/.614Ē on 112LSA

  7. #7
    Do you ever leave? paulzig's Avatar
    Join Date
    Oct 2008
    Location
    Gold Coast
    Posts
    15,211

    Default

    I wouldnt use something with more lift on the exhaust lobes, usually they are the same lobe family so they arent really slower exhaust lobes. But for the stock stall something like that would be your limit.

  8. #8
    casual poster
    Join Date
    Feb 2017
    Location
    Melbourne
    Posts
    257

    Default

    Quote Originally Posted by paulzig View Post
    I wouldnt use something with more lift on the exhaust lobes, usually they are the same lobe family so they arent really slower exhaust lobes. But for the stock stall something like that would be your limit.
    Yeh, Iím hearing you there on the exhaust.

    Iíll have more of a look at it all.
    Who knows maybe this might tempt me to go with a bigger cam and bite the bullet and stick a small stall in it....

  9. #9
    Do you ever leave? paulzig's Avatar
    Join Date
    Oct 2008
    Location
    Gold Coast
    Posts
    15,211

    Default

    You dont need bigger cam, just stick a stall in there with the small cam. The heads on these things are huge which make it rev up easy no need for big duration cams, the manifold saves it somewhat being a long runner, put a super victor on it and it'll rev up higher even with a stock cam.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Cam Selection
    By Dizzy Dean in forum Members Lounge
    Replies: 6
    Last Post: 31-08-2015, 05:15 PM
  2. Vt 5.0 cam selection
    By Adam Perth in forum Holden V8's
    Replies: 2
    Last Post: 30-04-2011, 02:13 PM
  3. Cam selection.
    By Grunt. in forum 6 & 4 Cylinder discussion
    Replies: 4
    Last Post: 05-01-2010, 07:34 PM
  4. 355 cam selection help!!
    By tofly304 in forum Holden V8's
    Replies: 9
    Last Post: 04-07-2009, 02:51 PM
  5. Cam selection for 253
    By HX253 in forum Holden V8's
    Replies: 21
    Last Post: 16-11-2007, 09:44 PM

Posting Permissions

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