Whats the difference between the old HP ratings vs. the net ratings? - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum

Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > General Discussion> Hotrodders' Lounge
User Name
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 06-24-2011, 01:50 PM
CometCyclone's Avatar
Registered User
Last photo:
Join Date: May 2011
Location: Mid Atlantic
Age: 49
Posts: 23
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Whats the difference between the old HP ratings vs. the net ratings?

What I'm trying to figure out, is how do you translate the power differences between the pre-1971 cars and the post 1971 cars. They changed to net ratings in 1971, but what does that mean, and how are they measured versus how horsepower was previously measured?

I now hear that there is an even newer method that they now use to measure HP and torque...... How is it done, and how is it compared/translated to older methods?

Did cars made in the US after 1974 really have that much less power, or is it partially a difference between net and gross measurements? I know they had less power after 1972-1974, but I dont know how to compare the net vs gross measurements........

I think there should just be one consistent way to measure. Like from the rear wheels only.........

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 06-24-2011, 01:56 PM
Valkyrie5.7's Avatar
www.generationhighoutput. com
Last wiki edit: Painting chrome wheels
Last journal entry: Stopping my journal entries here
Last photo:
Join Date: Feb 2010
Location: Phoenix
Age: 30
Posts: 897
Wiki Edits: 15

Thanks: 147
Thanked 72 Times in 63 Posts
Anything you ever wanted to know about measuring horsepower can be found here:

Wikipedia - Horsepower
Reply With Quote Quick reply to this message

Recent Hotrodders' Lounge posts with photos

Quick Reply

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

Posting Rules
You may post new threads
You may 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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Torque ratings 460 vs 454 Mertz Engine 12 04-05-2011 11:06 PM
HP ratings STUDE55DOG Hotrodding Basics 1 11-29-2010 09:08 AM
Chevy HP ratings Eric64 Engine 1 02-11-2008 05:20 PM
Connecting Rod Ratings BringBackTheCamaro Engine 2 03-26-2007 07:19 AM
CFM ratings syclone Engine 4 08-18-2005 10:06 PM

All times are GMT -6. The time now is 03:17 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.