If this is your first visit, please click the Sign Up now button to begin the process of creating your account so you can begin posting on our forums! The Sign Up process will only take up about a minute of two of your time.

Follow us on Facebook Follow us on Twitter
Results 1 to 3 of 3

Thread: Vortec Heads

  1. #1
    My Boats:
    Chris Craft Stinger 222
    Join Date
    Jul 2008
    Darwin, Australia

    Vortec Heads

    G'day All,

    I have a set of Vortec Heads for my Gev VI 454. Are they any good? I haven't actually seen them yet as they are fresh out of the shop.

    Are they rectangle or oval port and what is the best inlet to match for a Crane 741 cam and a BG Demon 850 carb with IMCO exhaust trying for around 480-500 hp?

    Thanks lads,

  2. #2
    My Boats:
    1993 257 Powerquest
    Join Date
    Jun 2006
    Royal Oak, MI
    With a good porting job, Vortec heads are a good upgrade for a 330hp 454. Especially if you want some fuel economy as well. I made 460hp with a set of them, but I think that's about all they have in them. They are oval port and flow horribly out of the box.

  3. #3
    My Boats:
    Chris Craft Stinger 222
    Join Date
    Jul 2008
    Darwin, Australia
    Thanks mate!
    I've confirmed they are a large oval port design with some mild additional porting for flow. Doesn't help the fact I've got a rectangle port RPM air-gap at home now but hey! If I upgrade heads later I've got an inlet already!
    I've just read Dennis Moore's book on Marine BBC's. Very helpful. I think I'll give these heads a chance and punish them to see what they can really do. Apparently the exhaust profile is pretty good so I'll work some more on the inlet path and see what it gets me.
    As I said, I'm aiming for around 500hp to start so I may have some work to get there yet.
    What's an 0.040" over 454 anyway???

    Man I love this stuff, so much more interesting than TV!

Similar Threads

  1. Help Vortec L29 heads
    By Andy in forum General Q & A
    Replies: 5
    Last Post: 09-08-2005, 08:53 AM
  2. Vortec Heads
    By Sates in forum General Q & A
    Replies: 1
    Last Post: 01-18-2005, 06:55 AM
  3. L-29 Vortec heads
    By bajalome in forum General Q & A
    Replies: 3
    Last Post: 04-03-2004, 12:12 PM
  4. Vortec heads
    By rchevelle71 in forum General Boating Discussion
    Replies: 2
    Last Post: 12-23-2003, 08:48 AM
  5. Vortec heads
    By cartman in forum General Q & A
    Replies: 1
    Last Post: 10-14-2003, 05:06 AM

Posting Permissions

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

OSO Directory
All times are GMT -5. The time now is 03:50 PM.
Powered by vBulletin® Version 4.2.0
Copyright © 2017 vBulletin Solutions, Inc. All rights reserved.
Search Engine Optimization by vBSEO 3.6.1
Original Poster In Postbit provided by Original Poster In Postbit v1.0.0 (Free) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
Copyright 2011 OffShoreOnly. All rights reserved.