Engine Tech

JESEL ROCKERS

JESEL Reintroduces Premium Stud Rocker Systems

Jesel has built its brand of valvetrain innovation with shaft rocker systems there are some race…
arp bolts

ARP’s Secret Fastener Technology Lab

ARP's test lab has quantified the potential for a 20% or more loss in clamping force with used…

540ci All Motor Pump Gas Brute

The new AFR cylinder heads are the central component of this remarkable piece; a real world engine…

Blown Hi-Torque E85 Chevy Small Block

The key to power for this 628 HP 383ci blown street small block was the 177-cid Roots-style Weiand…

383 Chevy: Beyond the Crate!

Is the 383 Chevy the Most Popular Small Block Ever? That's easy to believe based on the number…

Understanding the Rod Length and Pin Height Connection

The relationship between connecting rod length, piston compression height and compression ratio…
direct injection Corvette engine

Direct Injection Piston Damage? Check Your Oil

Low Speed Pre-Ignition or LSPI is a previously unrecognized combustion anomaly that leads to severe…
Merlin IV big block

All New Merlin IV Big Block Chevy

World Products has completely redesigned the famed Merlin Big Block Chevy casting, incorporating…
Holley Dominator

Holley Releases 1050 CFM Gen 3 Marine Dominator Carbs

Holley/MSD is pleased to announce the release of Holley 1050 CFM Gen 3 Marine Dominator Carburetors,…
Mercedes F1 engine

Mercedes F1 Engine Achieves 50% Thermal Efficiency

November 2, 2017
The current Mercedes Formula 1 engine achieves over 50 percent thermal efficiency, a major performance…
hemi crate engine

Mopar Debuts Supercharged Hemi Crate Engine

October 30, 2017
Mopar brand unleashed a new 6.2-liter supercharged Crate HEMI® Engine Kit that injects 707 horsepower…
race pistons

Are Your Pistons Round?

October 20, 2017
A piston’s operating environment strongly influences its overall shape and that form becomes…
GEN III Hemi lifters

GEN III Hemi Lifter Tick Solved

It’s no secret among engine builders and enthusiasts that hydraulic lifter and associated valvetrain…
speed demon

Speed Demon’s A/Blown Fuel Streamliner Motor

Engine builder Kenny Duttweiler's thoughtful approach to torque-managed small block LS power and…

Factory 409 Fuel Injection: No Really!

In a bid to improve power and economy, GM engineering staff undertook extensive research on fuel…
blown small block Chevy

1290 HP, 421ci Small Block Chevy Build

Sportsman racers have pretty much gone big league thanks to a broad performance market that offers…

Mystery Motor Development Engineer Bill Howell Tells All

Our first story on Chevrolet’s legendary mystery motor generated a lot of new questions and a…
427 mystery motor

Chevrolet 427 Mystery Motor

Most of the testing and development was done with 409ci versions. Development engineers were able…
ARP BOLTS

Understanding Engine Fastener Quality with ARP

To some its just nuts and bolts, but the science behind the parts plays a critical role in keeping…
weisco boostline rod

Wiseco’s New Boostline Connecting Rods

Weisco's new extreme duty BoostLine connecting rods are designed for up to 2000 horsepower applications…
aeromotive

Aeromotive’s New EFI to Carb Regulator

Aeromotive’s New EFI to Carb Regulator (P/N 13220) allows any car or truck, originally equipped…

Profiling JE Pistons for Maximum Performance

December 2, 2016
There's a lot that goes into piston design and one of the most important aspects is the skirt design.…

A 735hp 438ci Small-Block Ford Bullet

This 438ci 735 HP Ford drag racing engine represents Hardcore Horsepower's unconventional, but…

Digitizing Combustion Chambers to Increase Engine Power

Extracting maximum power from racing engines requires extraordinary attention to small details…
GST seals

One-Piece Rear Main Seals for Big Block Chevys

Rear main seal leakage remains a problem on engines that still use 2-piece rear main seals. We…
cob ra jet

Building the 750 HP Ford Cobra Jet

Ever wonder how carefully your Cobra Jet drag racing engine gets assembled at the factory? No doubt…

663hp 434ci Small-Block Street Engine

When tasked to build a 650hp+ street engine with lots of restrictions, Mike Petralia's Hardcore…

How to Build Racing Engines: Guide to Torque and Horsepower

Competition engines are designed and built to generate maximum torque and horsepower for their…

Koul Tools Braided Hose Assembly Kits

Koul Tools hose end assembly kits have been on the market for some time, but its amazing how many…

Earl’s New Vapor Guard Hose and Fittings

Earl's new Vapor Guard hose and hose ends provide a complete, economical solution that virtually…
383 Chevy

Why Johnson Hydraulic Roller Lifters Belong in Your Engine

Johnson Lifters wants to be your valve lifter source.  A primary supplier with  top tier manufacturing…

1969 Z/28 Canted Valve 302

An in depth look at a one-off all aluminum canted valve, crossram inducted Chevrolet small block…
CNC Dart Big Chief Chamber

How To Build Racing Engines: Cylinder Heads

When selecting a cylinder head for a particular application it is important to closely match the…
565 cubic inch BBC

565ci Dart BBC Race Build

Our sample engine build is a 565-ci big-block Chevy based around a Dart Big M cylinder block and…
Sonnys 932 engine

How To Build Racing Engines: Choosing the Right Induction System

Intake manifold characteristics and dimen­sions exert considerable influence on engine performance…
NHRA Pro Stock

Holley Pro Stock Electronic Fuel Injection Debuts at Winternationals

Anticipation finally crested as the NHRA Pro Stock entries began qualifying for the Circle K NHRA…
compression ratio

Understanding Dynamic Compression Ratio

Your engine actually has two compression ratios, static compression ratio and dynamic compression…

Smokin’ the Speed Demon

February 7, 2016
George Poteet's Speed Demon streamliner is the fastest piston powered car in the world with Duttweiler…

Turbocharged Y-Block for Bonneville

A turbocharged Ford Y-block in a GMC pickup truck seems a rather illogical choice for racing at…
hemi

Fabricating a Single Plane Hemi Intake

This is how hot rodders used to build the parts they needed back in the day. Its still happening…
Hemi

Early Hemi Single Plane 4V Intake Test

Legendary racer and engine builder Gene Adams has been one of the most successful navigators of…

Dart Reveals New Billet LS Cylinder Head

Dart Machinery has revealed some details of its forthcoming all-new billet LS cylinder head which…

Why is the Speed Demon So Damned Fast?

Exclusive! What makes George Poteet's awesome Speed Demon streamliner consistently able to crack…
lingenfelter

Lingenfelter C7 Intercooler Manifold

Lingenfelter Performance Engineering's liquid to air intercooler intake manifold for turbocharged…

Ford Debuts 2016 Mustang Cobra Jet Drag Package

The new 2016 Cobra Jet Mustang sports a blown Coyote 5.0L V8 engine with a refined Whipple 2.9L…
ZZ6 small block

Chevy’s New 405 HP ZZ6 Smallblock

Chevrolet introduces the newest member of the small-block family, the ZZ6 Turn-Key crate engine.…

New Boost Lock Prevents Boost Loss

Boost Lock is an innovative new product specifically designed to prevent the separation of inlet…

A Few Hot Engine Pics from the 2015 Street Nats

June 28, 2015
Engine guys love looking at hot engines to see what everyone else is doing. Here's a selection…
e85 Holley

Holley Ultra HP Now For E85

June 16, 2015
Holley has raised the bar on E85 race carburetors. Holley's popular 4150 Ultra HPs are now available…
RTS PD Valve

RTST Ported Flow Testing Valves

The RTS kit permits precise mapping of the airflow values around the circumference of the valve…

Supercharged! Design, Testing and Installation of Supercharger Systems

Corky Bell is widely acknowledged for his expertise in turbocharging and supercharging. His new…

World’s First DOHC, 4-Valve per Cylinder Racing Engine

The key concept to this timeless racing masterpiece is the airflow enhancing inclined 4-valve top…

Fifty Years with Valley Head Service

Fifty years ago this month Larry Ofria began porting cylinder heads in a run-down old chicken coup…
arp bolts

Why You Want ARP Bolts for Your Engine

ARP is the first thing you think of when you need fasteners for your race engine. Need some head…

Holley Introduces Vent Tube Spill Reduction Valves

Holley's new Vent Tube Spill Reduction Valves feature an internal valve ball that reduces fuel…

Lunati Bootlegger Cams

The most powerful series of street performance cams ever produced by the Lunati design team. They…
Holley Coytote EFI

Holley EFI Harnesses for Ford Coyote and Mod Motors

Holley has announced the release of plug & play EFI harnesses to use Holley EFI on Ford Coyote…

2015 Grand National Roadster Show

January 25, 2015
If you couldn't make it to the 2015 Grand National Roadster Show at Pomona, here's a look at some…

French Flathead V8 Block Prep Handbook

Vern Tardel's French Flathead V8 Block Prep Manual is a valuable reservoir of tips and knowledge…

Melling Debuts “Shark” SBC Oil Pumps at PRI Show

Melling has re-engineered the traditional small block Chevy oil pump with newly designed asymmetrical…
MSD

MSD Atomic AirForce Wow’s SEMA

MSD's new series of Atomic AirForce intake manifolds opened a lot of eyes at the 2014 SEMA Show.…
Holley

High Flow LS Throttle Bodies from Holley

Holley has released its new high flow throttle bodies for GM LS series engines. These feature-laden…

BHJ’s Cool New Deck Height Caliper

October 27, 2014
Quick and accurate deck height checks are a snap with BHJ’s new Deck Height Caliper! (Part# DHC-1)…

New Edelbrock LS3 Super Victor Intakes

Edelbrock announced the release of its new Super Victor intake manifold for Chevy LS3 engines.…
Pontiac

Top Pro Street Engines from the Car Craft Street Machine Nationals

Hot Pro Street engines were in plentiful supply at the 2014 Car Craft Street Machine Nationals…
2015_Dodge Hemi

2015 Dodge Challenger SRT Hellcat Boasts 707 HP

Dodge outpowers GM and Ford! They now claim the highest horsepower and torque figures offered by…

100+ Awesome Hot Rod Engines from the LA Roadster Show

Hot Rods and cool engines filled the Pomona, California fairgrounds for the 50th annual father's…

Corvette LT4 Most Powerful & Drivable Production Small Block Ever

The all-new 2015 Corvette Z06 is the most powerful production car ever from General Motors and…
dart block

Dart Blocks: Honed to Perfection

A new SV-20 honing system from Sunnen enables Dart to implement high-precision, highly-flexible…
Edelbrock

Edelbrock’s New BBC Victor Tunnel Ram

Edelbrock's new Victor Tunnel Ram is a modern updated design to its very successful Victor Ram…
calico coatings

Calico Coating’s New Web Site

Calico Coatings has launched a new web site designed to make it easy for engine builders to review…
holley carburetor

New Holley Ultra HP 2 Barrel Carbs

Holley is proud to introduce the all new Ultra HP 2 Barrel. Holley 2 barrels have been a mainstay…
optima

Smokin’ April Deals on Optima Batteries

Our friends at Optima Batteries are offering a super generous deal on batteries and battery chargers…
CP Products

New CP-Carrillo SBC and LS Bullet Rods

Inspired by the top forms of motorsports, our goal is to offer a piston and rod alternative by…
dodge

Montana Dodge Boys Scorch the Records

The V4F (Vintage 4 cylinder Flathead) engine class at Bonneville requires only an original pre-1935…
header kit

New Crate Engine “Header Kits” from Burns Stainless

Burns Stainless LLC Offers Crate Engine “Header Kits” Optimized For Performance Engine swap…

622 HP Blown Street Small Block

Sometimes a simple straightforward combination is best for a particular application. No tricks,…

Meaux Racing Heads tests 2101 HP Mud Truck Engine

December 6, 2013
This C&S Performance Engines bad boy made made 2,101 HP on a very easy nitrous squeeze, 1,611 HP…

Performance Distributors Releases New GM LS/VORTEC SOS Coils

Performance Distributors(Davis Unified Ignition) introduces the LS S.O.S.(Sultans Of Spark) ignition…
quickfuel

Quick Fuel Technology Introduces New EFI System

Quick Fuel Technology, known for its innovative carburetors and fuel systems, is introducing QFI…
holley efi

Holley EFI Shares Data with Racepak Data Systems

Racers that take advantage of the performance and advanced tuning of Holley’s Dominator or HP…
comp conical springs

Comp Introduces New Conical Valve Springs for High RPM Stability

Expected to become the new standard in high performance valve spring design, COMP Cams® Conical…
Aluminator 46x

New Ford Aluminator 46x 5.0L Shortblock

The Ford Racing 46X Modular 5.0L Stroker shortblock is a great way to build modular power – from…
Ford Z460 crate engine

Ford Z460 Crate Engine Pumps Big Power

Ford Racing has taken its Boss Block to the max with the biggest small block Windsor crate engine…

Ford Racing Performance Parts Announces New Z460 Short Block

Ford Racing Performance Parts has taken its line of Boss block based crate engines to the max displacement…
LS7 cam and heads

New LS7 Cam and Cylinder Head Package for 2010 and later Camaros

Chevrolet engineers have developed a new cylinder head and camshaft package designed to be a direct…
comp sportsman roller lifters

New Comp Sportsman Solid Roller Lifters

COMP Cams new Sportsman Lifters are offered in two configurations: a traditional needle bearing…
ZZ% crate motor

Chevrolet introduces 400 HP ZZ5 Small Block Crate Motor

Traditional small block Chevy fans just received some love from Chevrolet Performance in the form…
COPO 427 crate engine

Chevrolet Expands COPO Crate Engines

Nov. 4, 2013, SEMA Show, Las Vegas Chevrolet Performance is expanding the COPO engine family with…
chevy small block

Hardcore Horsepower’s 692 HP 406ci Chevy

A 406 cubic inch small block is one of the most popular choices for Chevy powered sportsman drag…

Coated Carbs for Cooler Fuel

Quick Fuel Technology™ (QFT) has introduced a highly durable coating that lowers fuel temperatures…

Sonny’s 1,005ci Billet V8 Cranks 2150 HP

Sonny's Racing Engines is now offering the first V8 racing engine to top 1000 cubic inches. The…

304ci Y-block, 147 MPH…’62 Ford Pickup

Y-Block powered Ford pickup busts a move at 2013 Bonneville Nationals with a 147 MPH pass that…
summit racinf

Summit Racing Engine Swap Specs

Summit Racing has published a handy list of common dimensions for the most popular engines selected…

Garrett Announces SFI Spec Turbos for Drag Racing

The introduction of Garrett's new SFI 61.1 Drag Race Spec Turbos is accompanied by a certified…
Holley Terminator EFI

Holley’s New Terminator EFI System

Holley Performance Products has introduced the new Terminator™ line of carburetor replacement…

Watch the Doomsday Impala Buildup, then Ride Along on an 8.69 Pass!

Hey fellas, All you drag racing fans will probably enjoy watching these videos of our Doomsday…
Engine Builing

Engine Building Rules Part 1: Planning

Consider a typical performance engine build plan that holds true for many budget based bracket…
V8 Firing Order

American V8 Firing Orders

There’s nothing more frustrating than finishing up a build late at night and not remembering…

Basic Engine Block Prep 101

March 2, 2013
It’s a time-honored tradition in the hot rod community - the day you take your block to the machinist…
2012 COPO Camaro

2013 COPO Camaro Engine Lineup Announced

March 1, 2013
The popular 427 returns since more than half of last year's 69 examples were ordered with the big…
World Products Warhawk block sporting Arias heads

Hemi Head Chevy Big Blocks

February 28, 2013
Mitech Racing Engines in Placentia, California sports a lengthy list of record setting engines,…

1/8 Scale Ford 427 Sideoiler

One of those models is this Ford FE V8 427 sideoiler engine with Weber carbs; the engine that Carroll…
doomsday impala

The Doomsday Impala

February 7, 2013
According to Andy, the single 4-barrel car has run a best of 8.80 at 150mph with 489ci naturally…

Inside Warren Johnson’s Pro Stock Engine!

January 15, 2013
To those who follow NHRA Pro Stock, Warren Johnson needs no introduction. Winner of six Pro Stock…

Finding Vintage Big Blocks

December 27, 2012
Vintage Big Blocks www.vintagebigblocks.com stands out with an easy to use web site that lists…

Cool Cars and Engines at Riverside International Automotive Museum

December 18, 2012
For engine enthusiasts the best part is the opportunity to get up close to the open wheel cars…
Edelbrock

1 HP/ci Edelbrock 265 Chevy in 1956

December 5, 2012
In the mid-1950s, Ronnie Householder (who later headed up Chrysler’s NASCAR program) was the…

Kaase Racing Engines Debuts P-38 Cross Ram Induction System

Jon Kaase Racing engines has debuted its new Ford Windsor P-38 cross-ram induction system incorporating…

The Leo Goossen Archive

November 14, 2012
Readers interested in vintage Miller and Offy racing engines may be pleased to learn that the Leo…

The Duntov “Performance” Manifesto

“I ask him if he recalled when the small-block Chevy had been introduced in ’55, and if he…
Jay Brown FE Ford Expert

Ford FE Engine Power Secrets

Ford built FEs from 1958 through 1976, in a wide variety of configurations. Displacements included…

Next Gen Chevy LT1 Small Block Unveiled

October 24, 2012
Cheverolet has just release pre-production details of the next generation (Gen V) all aluminum…
Cam Lobe Profile diagram

Effects Of Changes in Cam Timing and Lobe Separation Angle

The following tables provided by COMP Cams illustrate how variations in lobe separation angle and…
Zora Duntov Interview

Zora Arkus Duntov’s Last Public Interview

Ever wonder where the "Z" came from in RPO codes like Z28, ZL1, Z06 and so forth? It stands for…
Gen VI Chevy block

Top 10 Reasons to Build GEN VI Based Chevrolet Big Blocks

Unless you require a specific block casting for a numbers matching restoration project, there is…
camshaft installation

Engine Building Rules: Part 1

September 22, 2012
Engine projects frequently evolve in a hap-hazard manner, often based on a few components you may…
Meaux Racing Heads

PipeMax Creator Larry Meaux on Race Engine Head Porting

Larry shares some great porting tips that you can apply to your own engine building projects. His…

Camshaft Basics

Pushrod based engines use two basic types of camshaft; either flat tappet or roller tappet. It’s…

Engine Parts

August 7, 2012
Parts is parts as they say, but all engine parts are not created equal. Race engine parts are highly…

Engine Dyno Testing

August 7, 2012
All racing engines should be tested on an engine dyno. Dyno testing fosters proper engine break-in…

Ford 5.0L Aluminator NA V8

August 4, 2012
Ford Racing has taken the Mustang GT 5.0L 4V TiVCT engine and created another in its series of…
Piston Speed

Calculating Piston Speed

Mean piston speed has long been used as an indicator of component durability under severe service.…

Porting Pointers

The objective of porting a cylinder head is to improve engine performance via constructive enhancements…

Tuning Tips for Intake Manifold Deficiencies

July 28, 2012
Various modifications and adjustments can be applied to intake manifolds to fine tune them for…

Racing Engines

July 21, 2012
The best definition is an engine configured to meet the specific performance requirements of a…
Engine Builder

Engine Builders

July 20, 2012
Some engines have limited lifespan while others call for durability and the ability to endure extreme…
Lunati BBC_assy

Lunati Big Block Chevy Rotating Assemblies

Lunati’s Voodoo® Engine Kits deliver big-inch, affordably-priced engine components for the popular…
Holley High Ram

Holley Hi–Ram Intake for Cathedral Port LS1 LS6 and Rectangle Port LS7 GM Engines

Holley's cast aluminum Modular Hi-Ram™ Intake System is now available for GM LS1/LS2/LS6 cathedral…

LSX 454

Chevrolet Performance delivers the LSX454 without an intake manifold and other accessories leaving…

LSX 376

GM's LSX376 (PN 19171049) is an affordable street performance engine perfect for engine swaps.…
LS9 Crate Engine

GM LS-Series General Engine Specs

July 14, 2012
GM LS Series engines have become the default hot rod engines of the new millennium. Check this…
Jim Mcfarland

A Conversation with Jim McFarland

When you want straight talk from an industry insider it's always best to ask someone who has been…
AFR LS Mongoose Cylinder Heads

AFR Mongoose Strip Cylinder Heads for GM LS

Increase performance and save yourself the hassle of having the stock heads reworked by replacing…
Goodson Valvespring Bench

Goodson Valve Spring Bench

Designed to work with virtually any cylinder head, units available in pneumatic and manual models…

Trend Performance New Hard-Tip Self-Lubricating Pushrod

Trend Performance has introduced what they believe to be the world’s first self-lubricating 5/16˝…
RHS Pro elite heads

Make More Power With An RHS Pro Elite Cylinder Head

RHS Pro Elite cylinder heads set the standard with unrivaled performance, superior quality and…

Elgin Industries 1-piece Thickwall Pushrods

Elgin Industries new thick wall 1-piece pushrod design allows higher spring loads and RPM in performance…

How to Use a Dial Indicator

June 5, 2012
Dial indicators are one of the primary measuring tools used in precision engine building. They…

Dart 18° Big Chief Cylinder Head Selection

We selected a set of Dart 18° Big Chief cylinder heads for this project. They are offered as cast…
deck bridge

How to Use a Deck Bridge

May 17, 2012
A deck bridge is a basic comparator tool that allows you to easily read dimensional differences…

Engine Building Tools

May 17, 2012
Anybody can screw an engine together with a socket set, but would you really do that without checking…

Priority Main Oiling

May 13, 2012
Most OEM and aftermarket race cylinder blocks are configured for priority main oiling to protect…

How to Install ARP Main Cap Studs

May 13, 2012
Serious race engine builders mostly use high strength ARP studs to anchor the main caps. Studs…
Jegs Fuel Log

JEGS Adjustable Billet Fuel Log

JEGS adjustable billet fuel log provides an effective fueling solution for single four barrel carburetor…
Stgraight Shot Oiling

Straight Shot Oiling

Many years ago racers decided that cross-drilling an additional hole straight through the mains…
Fillet Radius

How to Avoid Rod Bearing Fillet Ride

April 19, 2012
Fillet ride is a potential cause of rod bearing failure in racing and high performance engines.…
Crank Thrust

Checking Crankshaft End Thrust

April 18, 2012
Checking crankshaft thrust endplay is a basic engine building step that is sometimes frustrated…
ARP rod bolt stretch gauge

ARP Rod Bolt Stretch Gauge How-to

Most engine builders concede that torquing rod bolts during final assembly is no longer an accepted…
Drilling for pin oiler

CV Products Chevy Pin Oiler Installation

Most dedicated race blocks for Sprint Cup racing, Formula 1 and other high end applications are…
Dart Big M block, 3/4 front view

Dart Big M Block Selection

The high demand performance requirements of this particular engine application require a cylinder…