Go Back  Offshoreonly.com > Technical > General Q & A
quick question, crankshaft hp vs propshaft hp >

quick question, crankshaft hp vs propshaft hp

Notices

quick question, crankshaft hp vs propshaft hp

Thread Tools
 
Old 02-24-2005, 09:29 PM
  #1  
JGB
Registered
Thread Starter
 
JGB's Avatar
 
Join Date: Feb 2001
Location: Jax, FL
Posts: 585
Likes: 0
Received 0 Likes on 0 Posts
Default quick question, crankshaft hp vs propshaft hp

I'm looking at a 350 chevy that produces 365 hp at the crankshaft. How much less hp do you think it produces through the propshaft of an alpha ss drive? thanks a ton!

Jim
JGB is offline  
Old 02-24-2005, 09:41 PM
  #2  
Registered
 
Whitey's Avatar
 
Join Date: Oct 2000
Location: Eaton Rapids, Mi , USA
Posts: 389
Likes: 0
Received 0 Likes on 0 Posts
Default Re: quick question, crankshaft hp vs propshaft hp

I would guess a 30 hp loss to the outdrive. I am not sure about a ss alpha but I have read that a 30 hp drop is the avg on a B1
Dwight
Whitey is offline  
Old 02-24-2005, 10:01 PM
  #3  
Registered
VIP Member
 
Join Date: Jan 2004
Location: Boca Raton, FL
Posts: 3,682
Likes: 0
Received 4 Likes on 4 Posts
Default Re: quick question, crankshaft hp vs propshaft hp

A 454 Magnum has 365 at the crankshaft and 350 at the prop.
Edward R. Cozzi is offline  
Old 02-25-2005, 07:01 AM
  #4  
Registered
 
Join Date: Jul 2004
Location: SENECA LAKE
Posts: 171
Likes: 0
Received 0 Likes on 0 Posts
Re: quick question, crankshaft hp vs propshaft hp

I talked to Mercury a year or so ago and they told me 11% HP drop thru the drive.
Badtoon is offline  
Old 02-25-2005, 08:10 AM
  #5  
JGB
Registered
Thread Starter
 
JGB's Avatar
 
Join Date: Feb 2001
Location: Jax, FL
Posts: 585
Likes: 0
Received 0 Likes on 0 Posts
Default Re: quick question, crankshaft hp vs propshaft hp

very cool , thanks everybody for their help!
JGB is offline  
Old 02-25-2005, 10:30 AM
  #6  
SORE MEMBER
Platinum Member
 
Wobble's Avatar
 
Join Date: Apr 2004
Location: 29°50'49.74"N 95° 5'17.55"W.......TEXAS
Posts: 6,989
Likes: 0
Received 1 Like on 1 Post
Default Re: quick question, crankshaft hp vs propshaft hp

I looked at this based on published data last year. Looks like 30HP is the average of 25-35HP range I found.
Wobble is offline  
Old 02-25-2005, 12:46 PM
  #7  
Platinum Member
Platinum Member
 
Bullhead's Avatar
 
Join Date: May 2004
Location: Smithfield, VA
Posts: 1,350
Received 68 Likes on 32 Posts
Default Re: quick question, crankshaft hp vs propshaft hp

I know that I should know this but.... are the Mercury racing engines hp rated at the crank or prop?
Bullhead is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
jdub
General Q & A
3
01-21-2008 10:06 AM
Full Force
General Q & A
4
04-22-2007 10:57 PM
9 Lives
General Q & A
4
10-28-2006 10:44 PM
RJBBC
Checkmate
17
05-08-2005 01:07 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: quick question, crankshaft hp vs propshaft hp


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.