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 2 of 2
  1. #1
    Join Date
    Apr 2010

    454 Mag MPI Mods - HP Guesses???

    Did a full rebuild on my motor but didn't get to put it on the dyno, looking for guesses on the new HP. There are a lot of discussions on mods with the carburated version but not as many with the MPI.

    454 Mag MPI (originally 385 HP, w/flat tappet cam)
    10:1 Compression
    Bore .030 over
    EMI Exhaust
    Inconel Valves
    H-Beam connecting rods
    Mahle pistons
    Liberty Rocker Arms
    Manley Push rods
    Edelbrock lifters
    Hydr. Roller Cam
    Intake Net Lift .569"
    Exhaust Net Lift .561"
    Intake Gross Lift .335"
    Exxhaust Gross Lift .330"
    Duration @ .050"

    Also, how do I read the balancing results for the Bobweight card and final spin numbers?
    Last edited by stlawrence17; 10-10-2010 at 08:47 AM.

  2. #2
    Charter Member # 55 Charter Member Griff's Avatar
    My Boats:
    ..........32........... Active Thunder
    Join Date
    Oct 2000
    The only thing thats looks like it will increase HP is the higher compression, cam and exhaust. Maybe 450hp.

    How is the ECM tuned if you didn't dyno it???????

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
All times are GMT -5. The time now is 05:57 PM.
Powered by vBulletin® Version 4.2.0
Copyright © 2016 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 © 2016 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
Copyright 2011 OffShoreOnly. All rights reserved.