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Cylinder Head Design, Selection for Engine Builds

Choosing the “right” cylinder heads for an engine build can make all the difference in an engine that delivers and one that falls short of its potential. Horsepower, torque and throttle response all depend on how well the cylinder heads, camshaft and induction system work together. Choose the right combination and you’ll build a winner.

There’s No Simple Formula to Choosing the Perfect Camshaft

The camshaft design affects valve timing, compression and the engine’s ability to breathe. From pistons to manifolds, valve grind, piston pin offset, rod length, etc. Once the camshaft has been tabbed correctly for the application, the rest of the build can focus off that selection.

Edelbrock Rollin’ Thunder Camshaft For Chrysler Gen 2 Hemi Engines

Edelbrock has a new Rollin’ Thunder camshaft for Chrysler 426-572 Hemi engines. Edelbrock Rollin’ Thunder hydraulic roller camshafts are designed to improve horsepower and torque, produce a great sounding performance idle and provide sufficient vacuum.

Edelbrock Performer-Plus Camshaft for EFI Systems

Edelbrock now offers a new Performer-Plus camshaft for use with throttle-body style Electronic Fuel Injection systems on a small-block Chevrolet. Edelbrock Performer-Plus camshafts feature profiles that deliver a major improvement in throttle response and torque from off-idle to 5,500 rpm.

Edelbrock Rollin’ Thunder Camshaft For Small-Block Chevrolet Engines

Edelbrock is now offering a new Rollin’ Thunder camshaft for small-block Chevrolet engines. Edelbrock Rollin’ Thunder camshafts are designed to improve horsepower and torque, produce a great sounding performance idle and provide sufficient vacuum.

Choosing the Right Camshaft for a Performance Engine

A camshaft is nothing more than a cast iron or steel shaft with a series of lobes strategically placed along its length. Each lobe opens and closes a valve by moving a lifter, pushrod and rocker arm, or in the case of an overhead cam engine by moving a cam follower or direct valve action. However, choosing the right camshaft is not only the cornerstone of building a performance engine, but also its centerpiece.

COMP Cam LSR Series Hydraulic Roller Camshafts

The LSR Series is a lineup of hydraulic roller camshafts featuring COMP Cams’ most modern lobe designs for popular GM LS engines. Designed specifically for radical street performance and all-out race applications, these aggressive-profile cams take advantage of today’s newer, better-flowing aftermarket cylinder heads. The LSR Camshafts feature higher exhaust duration and overall lift, making them

Put Real Horsepower Into Your Hot Rod with COMP Cams’ Thumpr Camshafts

You’ve built your dream car. Now make your dream of an aggressive-sounding, high-performance ride come true with a Thumpr Camshaft. With the combination of early intake valve opening, long exhaust duration and a generous amount of overlap, Thumpr Cams from COMP Cams maximize your engine’s nasty-idling characteristics without negatively impacting streetability. Thumpr Cams offer performance and aggressive

Choosing Camshafts – Picking Performance

  Choosing the “right” cams­haft is not only the cornerstone of building a performance engine, but also its centerpiece. Choosing a cam can give anyone a headache – especially if they choose the wrong cam for a given application. There’s a lot of science involved in cam selection, so keep reading and we’ll help you

Camshaft Selection

When it comes to racing, sometimes the belief is that only custom-designed parts are good enough for a winning team. The question here is, do off-the-shelf components automatically have a performance handicap? In order to get to the bottom of the “Custom Grinds vs Catalog Specs” debate Engine Builder magazine reached out to experts at

Tuning Your Camshaft for Maximum Oval Track Power

Driver style plays a big part in the picture. A driver who can keep the rpm up in the turns will be able to use a bigger cam than one who drops a lot of rpm. The same cam in the car with lower turn speeds will not have enough torque at the turn exit

Camshaft & Valvetrain Technology Overview

Camshaft and valvetrain technology is a topic we’ve written much about over the years. A rotating eccentric lobe on a camshaft still opens the valves. In the case of an overhead valve engine, the cam lobe pushes a follower or bucket tappet to open the valve. With a pushrod engine, the cam lobe pushes a

Fuel Injected Engine Camshafts

To create a vacuum signal, that stands a reasonable chance at working in an application without having to re-flash the ECM computer, a camshaft needs to be: A) Short duration, 220-222 degrees @ .050? maximum. B) Wide lobe separation/centers, 112 to 114 degrees minimum. Do not attempt to install a camshaft with a 108 lobe

Designing and Building a World-Record Beating Porsche V8

We would build for the Blown Gas Modified Sports (BGMS) class where the record is currently 231.5 mph. Another record we were after was the Porsche marquee record for the 928 of 205.6 mph. Our math told us that – because we knew our final drive ratio, tire diameters and engine redline; and if our

Hydraulic Camshafts and Lifters 101

Closing up the gap between the tip of the rocker arm and the top of the valve stem reduces the pounding effect that can accelerate valve and rocker wear. Because of this, most of the push rod engines that have been built for the last 60 years have come factory-equipped with hydraulic camshafts and lifters.

Inside Flat Tappet Camshaft and?Lifter Technology

Roller cams have a couple of advantages over traditional flat tappet camshafts: they reduce friction, and they can be ground with more aggressive cam lobe profiles to make more power. You can also swap roller cams without having to replace the lifters. But the roller cam’s main disadvantage compared to flat tappet cams is its

Evolving Crankshaft Designs and Applications

In the early days, a crank didn’t have to be very sophisticated or strong because most engines were an inline design, and the loads and speeds were relatively low. Fast forward to today. The evolution in engine technology, power and performance has led to a whole new generation of performance crankshafts that are a mechanical

Diesel Performance: Camshafts, Lifters and Valvetrain

Diesel performance is nothing new. What is new is the level of interest in diesels for all kinds of racing; everything from traditional truck and tractor pulling to drag racing, even sports car and endurance racing. Diesel engines are a different type of animal when compared to gasoline engines. While both use the same four-stroke

How to Degree A Camshaft

These items are:     • A large Degree Wheel, such as LUNATI CAMS P/N 80000     • A Dial Indicator & Magnetic Base Stand, such as LUNATI CAMS P/N 80012     • A Steel Deck Strap Kit, such as LUNATI CAMS P/N 80013     • All of the above is available as LUNATI CAMS DEGREE

Howards Cams Completes Purchase of Custom Camshaft Co.

The purchase fof CCC will enable increased production capacity and new production capabilities, according to a spokesman for Howards Cams. Engine builders will now have even more options for custom grind development. Included in the assets of the purchase is a Landis 3L CNC cam-grinding machine, a well regarded name in cam grinding equipment. According