Engine Tech
How to Use a Degree Wheel
Join Jeff Smith, former editor of Hot Rod and Car Craft Magazines, as he shows us how to use a…
505ci Mopar Stroker Top End Kit
Our 440 Chrysler stroker build was initiated to show the power potential of Trick Flow's PowerPort…
Manley Expands Turbo Tuff® Tri-Beam Rod Offerings
Manley Performance has expanded the availability of its highly-acclaimed Turbo Tuff® Tri-Beam…
505-CID Mopar 440 Stroker
Step by step prepping and assembling the short block for a 505ci Mopar RB stroker engine for big…
Digital Degree wheel
Digicam digital Degree Wheel makes degreeing a cam a snap with adapter socket sleeves for every…
New Boostline Rods For GM Duramax & Cummins Diesels
New Boostline Rods For GM Duramax & Cummins Diesels offer maximum strength for boosted applications...
Aviaid Dry Sump Pan for Ford Coyote
Aviaid, the company that pioneered dry sump lubrication systems in motorsports, now offers a fabricated…
1700 HP Procharged LSX Engine
A ProCharged 1700+ horsepower Scoggin-Dickey built LSX dragster engine for big money bracket racing…
A Pro Mod Hemi for the Street
An insider's look at Wally Elder's radical new engine for his equally wild 1969 Dodge Daytona Pro…
Milodon 440 Chrysler Main Cap Upgrade
Strengthening a 440 Mopar block is easy with Milodon's redesigned cross-bolted caps.
QMP Racing Shop Tour
For twenty years, QMP Racing has been providing high quality race engine building and machine shop…
495-cid Pontiac Powerhouse
Von Neal goes all-in with a Kauffman MR-1 iron block to accommodate a SCAT 4.5-inch forged stroker…
New API Lubrication Standards Published
Working with the auto industry, oil marketers, additive companies and others, the American Petroleum…
Understanding Tribology
The tribologists at Total Seal use a tool called the Stribeck curve to engineer low friction piston…
Edelbrock Supercharger Kits for 2014-2020 GMC Yukon Denalis Deliver Top Performance
Edelbrock offers a, 150 horsepower, 50-State legal E-Force Yukon Denali...
Your Oil’s Best Friend – The Piston Ring
Have you ever wondered why automatic transmission fluid is “fill-for-life” and motor still…
850 HP HELLCAT KILLER!
"We're calling it The Hellcat Killer", says Mike Petralia, owner and chief engine builder at Hardcore…
JESEL Reintroduces Premium Stud Rocker Systems
Jesel has built its brand of valvetrain innovation with shaft rocker systems there are some race…
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 Piston Damage? Check Your Oil
Low Speed Pre-Ignition or LSPI is a previously unrecognized combustion anomaly that leads to severe…
All New Merlin IV Big Block Chevy
World Products has completely redesigned the famed Merlin Big Block Chevy casting, incorporating…
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 Achieves 50% Thermal Efficiency
The current Mercedes Formula 1 engine achieves over 50 percent thermal efficiency, a major performance…
Mopar Debuts Supercharged Hemi Crate Engine
Mopar brand unleashed a new 6.2-liter supercharged Crate HEMI® Engine Kit that injects 707 horsepower…
Are Your Pistons Round?
A piston’s operating environment strongly influences its overall shape and that form becomes…
GEN III Hemi Lifter Tick Solved
It’s no secret among engine builders and enthusiasts that hydraulic lifter and associated valvetrain…
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…
1290 HP, 421ci Small Block Chevy
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…
Chevrolet 427 Mystery Motor
Most of the testing and development was done with 409ci versions. Development engineers were able…
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…
Wiseco’s New Boostline Connecting Rods
Weisco's new extreme duty BoostLine connecting rods are designed for up to 2000 horsepower applications…
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
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…
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…
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…
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…
How To Build Racing Engines: Cylinder Heads
When selecting a cylinder head for a particular application it is important to closely match the…
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…
How To Build Racing Engines: Choosing the Right Induction System
Intake manifold characteristics and dimensions exert considerable influence on engine performance…
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…
Understanding Dynamic Compression Ratio
Your engine actually has two compression ratios, static compression ratio and dynamic compression…
Smokin’ the Speed Demon
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…
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…
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 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…
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
Engine guys love looking at hot engines to see what everyone else is doing. Here's a selection…
Holley Ultra HP Now For E85
Holley has raised the bar on E85 race carburetors. Holley's popular 4150 Ultra HPs are now available…
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…
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 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
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 Atomic AirForce Wow’s SEMA
MSD's new series of Atomic AirForce intake manifolds opened a lot of eyes at the 2014 SEMA Show.…
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
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.…
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 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 Blocks: Honed to Perfection
A new SV-20 honing system from Sunnen enables Dart to implement high-precision, highly-flexible…
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 Coating’s New Web Site
Calico Coatings has launched a new web site designed to make it easy for engine builders to review…
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…
Smokin’ April Deals on Optima Batteries
Our friends at Optima Batteries are offering a super generous deal on batteries and battery chargers…
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…
Montana Dodge Boys Scorch the Records
The V4F (Vintage 4 cylinder Flathead) engine class at Bonneville requires only an original pre-1935…
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
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…
Quick Fuel Technology Introduces New EFI System
Quick Fuel Technology, known for its innovative carburetors and fuel systems, is introducing QFI…
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 Introduces New Conical Valve Springs for High RPM Stability
Expected to become the new standard in high performance valve spring design, COMP Cams® Conical…
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 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…
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…
New Comp Sportsman Solid Roller Lifters
COMP Cams new Sportsman Lifters are offered in two configurations: a traditional needle bearing…
Chevrolet introduces 400 HP ZZ5 Small Block Crate Motor
Traditional small block Chevy fans just received some love from Chevrolet Performance in the form…
Chevrolet Expands COPO Crate Engines
Nov. 4, 2013, SEMA Show, Las Vegas Chevrolet Performance is expanding the COPO engine family with…
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 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’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 Building Rules Part 1: Planning
Consider a typical performance engine build plan that holds true for many budget based bracket…
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
It’s a time-honored tradition in the hot rod community - the day you take your block to the machinist…
2013 COPO Camaro Engine Lineup Announced
The popular 427 returns since more than half of last year's 69 examples were ordered with the big…
Hemi Head Chevy Big Blocks
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…
The Doomsday Impala
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!
To those who follow NHRA Pro Stock, Warren Johnson needs no introduction. Winner of six Pro Stock…
Finding Vintage Big Blocks
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
For engine enthusiasts the best part is the opportunity to get up close to the open wheel cars…
1 HP/ci Edelbrock 265 Chevy in 1956
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
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…
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
Cheverolet has just release pre-production details of the next generation (Gen V) all aluminum…
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 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…
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…
Engine Building Rules: Part 1
Engine projects frequently evolve in a hap-hazard manner, often based on a few components you may…
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
Parts is parts as they say, but all engine parts are not created equal. Race engine parts are highly…
Engine Dyno Testing
All racing engines should be tested on an engine dyno. Dyno testing fosters proper engine break-in…
Ford 5.0L Aluminator NA V8
Ford Racing has taken the Mustang GT 5.0L 4V TiVCT engine and created another in its series of…
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
Various modifications and adjustments can be applied to intake manifolds to fine tune them for…
Racing Engines
The best definition is an engine configured to meet the specific performance requirements of a…
Engine Builders
Some engines have limited lifespan while others call for durability and the ability to endure extreme…
Lunati Big Block Chevy Rotating Assemblies
Lunati’s Voodoo® Engine Kits deliver big-inch, affordably-priced engine components for the popular…
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…
GM LS-Series General Engine Specs
GM LS Series engines have become the default hot rod engines of the new millennium. Check this…
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 Mongoose Strip Cylinder Heads for GM LS
Increase performance and save yourself the hassle of having the stock heads reworked by replacing…
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˝…
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
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…
How to Use a Deck Bridge
A deck bridge is a basic comparator tool that allows you to easily read dimensional differences…
Engine Building Tools
Anybody can screw an engine together with a socket set, but would you really do that without checking…
Priority Main Oiling
Most OEM and aftermarket race cylinder blocks are configured for priority main oiling to protect…
How to Install ARP Main Cap Studs
Serious race engine builders mostly use high strength ARP studs to anchor the main caps. Studs…
JEGS Adjustable Billet Fuel Log
JEGS adjustable billet fuel log provides an effective fueling solution for single four barrel carburetor…
Straight Shot Oiling
Many years ago racers decided that cross-drilling an additional hole straight through the mains…
How to Avoid Rod Bearing Fillet Ride
Fillet ride is a potential cause of rod bearing failure in racing and high performance engines.…
Checking Crankshaft End Thrust
Checking crankshaft thrust endplay is a basic engine building step that is sometimes frustrated…
ARP Rod Bolt Stretch Gauge How-to
Most engine builders concede that torquing rod bolts during final assembly is no longer an accepted…
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 Selection
The high demand performance requirements of this particular engine application require a cylinder…