Results 1 to 4 of 4

5.3L heads?

This is a discussion on 5.3L heads? within the External Engine forums, part of the LSx Technical Help Section category; is it worth the time to change the heads off my z28 to the 5.3L heads? what exactly do they ...

  1. #1
    Junior Member Steve's LS1's Avatar
    Join Date
    Dec 2010
    Location
    Southington, Ohio,
    Posts
    80

    Silver
    98 Camaro Z28

    5.3L heads?

    is it worth the time to change the heads off my z28 to the 5.3L heads? what exactly do they do?

  2. #2
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
    Posts
    22,520

    98 Formula
    06 duramax

    you would definitely have to swap the valves out if they're the stock valves....tiny. Just swapping them stock for stock you will make less power due to the valves being smaller. Overall though if you get some worked 5.3's you get a smaller chamber which will up your compression a bit and you can mill for even more compression.

  3. #3
    Junior Member Steve's LS1's Avatar
    Join Date
    Dec 2010
    Location
    Southington, Ohio,
    Posts
    80

    Silver
    98 Camaro Z28

    Quote Originally Posted by 0rion View Post
    you would definitely have to swap the valves out if they're the stock valves....tiny. Just swapping them stock for stock you will make less power due to the valves being smaller. Overall though if you get some worked 5.3's you get a smaller chamber which will up your compression a bit and you can mill for even more compression.
    ok thanks, i picked the heads up for $50 so i couldnt pass it up. and i heard somethings bout the heads on an ls1 but never really paid attention. ill take the heads to the shop to see whay i can get done to em in my price range. any ideas on a good valve combo?

  4. #4
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
    Posts
    22,520

    98 Formula
    06 duramax

    I have 2.04 intake and 1.575 exhaust valves in mine but most people run 2.02 intakes I believe. The 2.04 was an option when I bought mine.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Replies: 0
    Last Post: 03-16-2011, 10:30 AM
  2. Replies: 0
    Last Post: 02-04-2011, 03:00 PM
  3. AFR heads VS. Ported and beefed up stock heads.
    By hutcher04 in forum Internal Engine
    Replies: 10
    Last Post: 03-14-2010, 09:27 AM
  4. New Heads or Port/Polish Stock Heads?
    By Black02LS1 in forum Internal Engine
    Replies: 32
    Last Post: 06-23-2007, 12:29 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
  •