Notices

Cruise RPM

Old 03-23-2004, 08:03 AM
  #1  
Registered
Thread Starter
 
CHAOS REIGNS's Avatar
 
Join Date: Nov 2002
Location: Huntersville, NC
Posts: 641
Likes: 0
Received 0 Likes on 0 Posts
Default Cruise RPM

what should i be cruising at?

I've got a 454 bored out to 468, gold roller rockers and all new internals.


I was told by the engine builder the motor was good to 5400 and i should top out at about 5200.


but what is a good safe RPM to run for 40 minutes at a time ??


thanks

Mark
CHAOS REIGNS is offline  
Old 03-23-2004, 08:06 AM
  #2  
Registered
 
Downtown42's Avatar
 
Join Date: Nov 2003
Location: 1 Flu Ovr KuKos Nest-WI
Posts: 9,950
Likes: 0
Received 0 Likes on 0 Posts
Default

75% of WOT/RPM.....5200 x .75= 3900rpm
Downtown42 is offline  
Old 03-23-2004, 09:17 AM
  #3  
Registered
 
PatriYacht's Avatar
 
Join Date: Jul 2002
Location: Waterford,MI
Posts: 2,867
Likes: 0
Received 1 Like on 1 Post
Default

A lot depends on your ability to control heat output of your engines and outdrives. If you have drive showers, and your water temps are steady below 160, and your oil temps are steady below 230, I dont see any problems running 4500 or more in a poker run.
PatriYacht is offline  
Old 03-24-2004, 02:41 PM
  #4  
Geronimo36
Gold Member
 
Panther's Avatar
 
Join Date: Sep 2002
Location: Elkton, MD
Posts: 11,972
Received 131 Likes on 36 Posts
Default

I try to keep my cruise RPMs below 3800 rpms, where the secondaries open up and start sucking down the gas. On a fuel injected motor this is different of course.

Listen to your motors, they tell you where they are happy cruising at. For me that is 3600 rpms where the engines sound like they aren't laboring or getting into the powerband.

Just my opinion.

Panther
Panther is offline  
Old 03-24-2004, 02:47 PM
  #5  
Registered
Thread Starter
 
CHAOS REIGNS's Avatar
 
Join Date: Nov 2002
Location: Huntersville, NC
Posts: 641
Likes: 0
Received 0 Likes on 0 Posts
Default

i've been talking to a few others -- sounds like i need an oil temp gauge ASAP !!

thanks for the advice
CHAOS REIGNS is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
SOX
General Boating Discussion
32
02-12-2007 10:53 AM
ratman
General Boating Discussion
17
06-21-2006 10:44 AM
Whiteknuckle
General Q & A
3
09-28-2003 08:17 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: Cruise RPM


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.