Hotrocker - Off-Road Forums & Discussion Groups
Go Back   Off-Road Forums & Discussion Groups > Chevy and GM > GM Standard IFS Trucks & SUV's

GM Standard IFS Trucks & SUV's All discussion of full sized IFS Trucks, SUV's to include Suburban

LinkBack Thread Tools Display Modes
Old 05-01-2000, 05:26 PM
Posts: n/a
Default Hotrocker

Has anyone seen or heard of this:

It looks like they make it for the Chevy small block.

This came off their site:

The Hotrocker gives the equivalent of multiple camshafts in an engine, each taking its turn when that design is the best for a given engine speed, with the valve actuation changing as engine speed (RPM) changes. Our device is notable for being more simple than any of the other VVT or VVA designs. It uses the valve train parts already found in standard engines; it merely machines them differently. It is disarmingly simple in concept, and as trouble-free as the standard components already on production engines. Hotrocker replaces the stock rocker arms in an engine with rocker arms that have different ratios at different engine speeds. Typical ratios on most engines are 1.5-to-1 or 1.6-to-1, and are fixed. The variable ratio rocker arms can operate with ratios from as little as 1-to-1 and as big as 1.9-to-1. Each position produces a different power curve as though the camshaft had been replaced by a different one. This means an engine so equipped will get the benefits of a mild camshaft so desirable for most traffic driving, a more radical camshaft for faster cruising and an even more radical camshaft producing the most power at higher RPM.

In dynamometer tests, this device has shown significant increases in the power and torque created by the engines. These tests show that utilizing the Hotrocker in place of the usual rocker arms will enable virtually any camshaft to produce more power both at low speeds and at high speeds.

In short, this device does give the equivalent of multiple camshafts that engineers have long wished for. It does it with great simplicity, is easily incorporated in most engine designs currently in production and should have the durability of the valve trains currently being used. An automobile in which this device is incorporated will perform as though a measurably larger engine has been installed in place of the existing one. Yet, due to the increase in efficiency achieved by the Hotrocker, the fuel consumption will be less.


87 K5

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote Quick reply to this message
Sponsored Links
Old 05-01-2000, 11:42 PM
Posts: n/a
Default Re: Hotrocker

The April issue of Hot Rod (I think) did an article on this. I'd love to try a set.

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote Quick reply to this message
Old 05-02-2000, 03:50 PM
Posts: n/a
Default Re: Hotrocker

I would think that there is some benefit to be achieved from this "variable valve lift" system, but production VVT systems change the valve timing and duration, instead of, or in addition to the amount of lift. I would be real interested in seeing some independent test results on a real engine.

1970 CST Blazer - 350, SM465, NP205. 1st gen. Blazers rule
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote Quick reply to this message
Old 05-03-2000, 09:54 AM
Old Hand
Join Date: Feb 2000
Location: Minot, ME
Posts: 1,181
Thanks: 0
Thanked 0 Times in 0 Posts
v8jeep is an unknown quantity at this point
Default Re: Hotrocker

I have seen similar hydrolic lifters that produce similar results. Summit sells some that are made by Rowes ( or something that sounds likes? sp?) They compress when you first get on the gas resulting in less lift, which produces more bottom end, then stiffen up on the top end resulting in more lift. Most drag racers use something similar.

[img]/wwwthreads_images/icons/cool.gif[/img] Big Ed
<font color=red>'88 YJ, 4" susp,3" body,33's,283 Chevy V8,TH350,4.11's,D30,D35c</font color=red>
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote Quick reply to this message
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Off-Road Forums & Discussion Groups forums, you must first register.
Please enter your desired user 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:
Where you live
Primary Off-Road Vehicle
Primary Off-Road Vehicle
Secondary Off-Road Vehicle
Secondary Off-Road Vehicle
A few details about yourself
Your hobbies, etc
Your job
Please select your insurance company (Optional)
Date of Birth
Your date of birth and age are displayed in several places on the forum. Only the administrator will have access to your date of birth should you choose to hide it via the privacy option below.
Month Day Year


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.

Thread Tools
Display Modes

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

All times are GMT -5. The time now is 04:35 AM.

Powered by vBulletin® Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.2.0
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1994-2009, VerticalScope Inc. // Off Road forums & discussion groups sitemap
side by side | atv | dirtbike | snowmobile | sandsport | competition | land use | Jeep | Toyota | Ford | GM