Go Back  Offshoreonly.com > Technical > General Q & A
525sc upgrades for more hp >

525sc upgrades for more hp

Notices

525sc upgrades for more hp

Thread Tools
 
Old 09-03-2016 | 01:47 AM
  #11  
Registered
 
Joined: May 2014
Posts: 206
Likes: 3
From: Buffalo NY
Default

Originally Posted by Donzi38ZX525SC
Hello,
Just reading your post here from quite a while back. Sounds like you're in the know with the 525s. I have a pair of 1999 525SC that are in very good condition, but looking to increase my output. The obvious goal is as much power/torque as possible, without having to go into the bottom ends. In other words, I'd like to shoot for the biggest bang for the buck. Thinking definitely a larger blower to start, but if it make more sense to to blower, heads, and cams, then that's the route I'd take. Having said that, inter-cooling is interesting as well; just really wanting to find the combination that will achieve the most gain. Your thoughts are appreciated.
Thank you
I would be interested in the original blower if you upgrade
AWOL is offline  
Reply
Old 09-03-2016 | 12:40 PM
  #12  
Griff's Avatar
Charter Member # 55
25 Year Member
Charter Member
Super Moderators
 
Joined: Oct 2000
Posts: 20,241
Likes: 2,490
From: Omaha/LOTO
Default

With 250 blowers and a cam change you should get to just over 600hp. Add better heads and you should get around 650hp.
Griff is offline  
Reply
Old 09-04-2016 | 08:15 PM
  #13  
Registered
 
Joined: Aug 2013
Posts: 621
Likes: 0
From: Newark, DE
Default

Had a 525sc in my old 27 fever, did AFR 265 partially CNC'd heads with a 106cc chamber which bumped compression to around 8.6:1, and converted to hydraulic roller cam from Bob Madara. With a 3" top pulley it made 5.6lbs of boost at peak power and was 689.4hp@6300rpms and 675ft lbs@4200. With the stock top pulley it made 3.5lbs of boost and was 649.6hp@6200rpms and 625.9ft lbs@4200.
ealesh33 is offline  
Reply

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



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

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.