Go Back  Offshoreonly.com > Owners Forum > Magnum Marine
magnum 27 sport >

magnum 27 sport

Notices

magnum 27 sport

Thread Tools
 
Old 09-07-2010 | 10:52 AM
  #1  
Thread Starter
Registered
 
Joined: Aug 2008
Posts: 2
Likes: 0
Default magnum 27 sport

Hi there,
Got a 1970 sport 27 magnum with blown 454 and bravo one 1.5:1 drive. anyone can tell me about magnum 27 with single bbc? here I have forged crank, pistons, rods, hydr roller cams, aluminium heads (merlin) 250 blower shop with holley 850 cfm marine carb, GIL dry exhaust. motor supposed to spin @5400rpm> Need a clue about how much HP I Have, What speed expected and whith which X dimension... Can anyomne help?.B.R.
Goly magnum 27 is offline  
Reply
Old 09-07-2010 | 11:08 AM
  #2  
Registered
 
Joined: Jun 2006
Posts: 14,914
Likes: 1
From: Lake Conroe, TX.
Default

Originally Posted by Goly magnum 27
Hi there,
Got a 1970 sport 27 magnum with blown 454 and bravo one 1.5:1 drive. anyone can tell me about magnum 27 with single bbc? here I have forged crank, pistons, rods, hydr roller cams, aluminium heads (merlin) 250 blower shop with holley 850 cfm marine carb, GIL dry exhaust. motor supposed to spin @5400rpm> Need a clue about how much HP I Have, What speed expected and whith which X dimension... Can anyomne help?.B.R.
I bet it is close to 600.

My 27 Magnum was in the mid 80's with a similar set up. You will need to spin a 26 or 28 B1

Any pics? They are cool boats
jeff1000man is offline  
Reply
Old 09-09-2010 | 12:17 PM
  #3  
Thread Starter
Registered
 
Joined: Aug 2008
Posts: 2
Likes: 0
Default

Sorry not yet.. boat in the harbor
Goly magnum 27 is offline  
Reply
Old 09-09-2010 | 06:21 PM
  #4  
Registered
 
Joined: Aug 2009
Posts: 66
Likes: 0
From: Baltimore,MD
Default

i have a 25 magnum sport that im putting together a blown 502 mag for with a bravo 3 or i also have a bravo 1 for. does anyone know anything about this set up for a 25? i know 27's and 25's are kinda different appearence wise, but how about hull design and ride? any input on what anyone thinks would be helpful. sorry to jump to another topic on your thread but it kinda relates to your.
lilguber06 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.