Go Back  Offshoreonly.com > Owners Forum > Powerquest
7.4 MPI to 496 Mag >

7.4 MPI to 496 Mag

Notices

7.4 MPI to 496 Mag

Old 02-21-2008, 04:40 PM
  #1  
Registered
Thread Starter
 
Join Date: Jun 2007
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
Default 7.4 MPI to 496 Mag

Thinking about re-powering my 260 Legend from the 7.4 MPI to a 496 mag. Has anyone out there made this made this switch on a 260 or comparable boat? If so were you happy with the performance increase and what was the performance increase? How much more performance would be gained by an HO? From what I have been reading depending on the hull the average increase would be about 2-3 mph.

Also going to be installing thru-hull exhaust at the same time as re-power. any input would be appreciated.
bdubs1 is offline  
Old 02-22-2008, 07:18 AM
  #2  
Registered
 
Knot 4 Me's Avatar
 
Join Date: Jun 2005
Location: Central IL
Posts: 8,361
Received 742 Likes on 400 Posts
Default

Bdubs1, do a search on this topic. There have been a couple of differet threads in the technical section outlining the swap from a 454/502 to a 496.
Knot 4 Me is offline  
Old 02-23-2008, 02:07 PM
  #3  
Registered
 
Fast Forward's Avatar
 
Join Date: Jul 2002
Location: S.W Michigan
Posts: 1,393
Likes: 0
Received 1 Like on 1 Post
Default

I'm assuming you have 7.4 MPI non mag?? If you have the mag you'd be better off doing a little freshening and moding on that platform as well as you'd save some $$$ . The mag has all the right components to build off of as opposed to the standard 7.4 which does not.
Fast Forward is offline  
Old 02-24-2008, 04:29 PM
  #4  
Registered
Thread Starter
 
Join Date: Jun 2007
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
Default

Yup it is the 7.4 MPI. I bought the boat with the intentions of doing a repower (got a great deal) but I figured I would ask the masses if anyone had been successful with any type of modifications to increase HP. From what I am reading here there is not much that can be done.
bdubs1 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
mg503
Baja
14
04-03-2013 04:50 PM
brick1932
General Q & A
7
09-21-2007 08:07 AM
Sick Stinger
General Boating Discussion
1
12-08-2006 08:35 PM
drylander
General Q & A
2
03-21-2004 08:30 AM
Kokopelli
General Q & A
2
01-18-2004 02:56 PM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Quick Reply: 7.4 MPI to 496 Mag


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.