Engine Tech / 170 posts found
1969 Z/28 Canted Valve 302
An in depth look at a one-off all aluminum canted valve, crossram inducted Chevrolet small block evaluated for the '69 Z/28. A glimpse of something so unique and bad ass for its day...
How To Build Racing Engines: Cylinder Heads
When selecting a cylinder head for a particular application it is important to closely match the desired RPM range based on port dimensions that include port length, cross section, and mid- and high-range flow rates...
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 Dart Big Chief Pro 1 aluminum cylinder heads. Following the step-by-step procedures is designed to simplify the mating of all the important components in the engine...
How To Build Racing Engines: Choosing the Right Induction System
Intake manifold characteristics and dimensions exert considerable influence on engine performance with respect to power band shape and positioning on the RPM scale. Race applications deal with three basic manifold types: dual-plane intakes, single-plane intakes, and tunnel ram intakes...
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 Winternationals on February 12th. Day one was a success as a full field of 16 cars showed up to qualify. All but one car made successful qualifying runs and indications point to some close racing...
Understanding Dynamic Compression Ratio
Your engine actually has two compression ratios, static compression ratio and dynamic compression ratio.
Smokin’ the Speed Demon
George Poteet's Speed Demon streamliner is the fastest piston powered car in the world with Duttweiler horsepower and here's a look at the new wind tunnel test designed to find the perfect ride height and aerodynamic balance for record setting...
Turbocharged Y-Block for Bonneville
A turbocharged Ford Y-block in a GMC pickup truck seems a rather illogical choice for racing at first glance, but that's the nature of class racing at Bonneville and the El Mirage dry lakes. No other venues offer the broad choice of classes and...
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 today as the pioneering old timers and new young guns join forces to build powerful new pieces that other hot rodders can use. That's quite encouraging, not just for Hemi fans, but for hot rodding itself.
Early Hemi Single Plane 4V Intake Test
Legendary racer and engine builder Gene Adams has been one of the most successful navigators of the Hemi's long progression of power. Most Hemi race engines were either supercharged for dragster or Gasser racing or outfitted with dual four barrel carburetors for Super Stock racing...
Dart Reveals New Billet LS Cylinder Head
Dart Machinery has revealed some details of its forthcoming all-new billet LS cylinder head which breaks new ground by coming with full water jacketed cooling. Its the last of the OEM level pushrod style engines that offers grass root enthusiasts...
Why is the Speed Demon So Damned Fast?
Exclusive! What makes George Poteet's awesome Speed Demon streamliner consistently able to crack off seemingly effortless 400 mph plus runs on the Bonneville salt flats?
Lingenfelter C7 Intercooler Manifold
Lingenfelter Performance Engineering's liquid to air intercooler intake manifold for turbocharged or centrifugal supercharged 2014-2015 C7 Corvettes with the LT1 engine offers a unique combination of performance enhancements...
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 supercharger pumping up the power. The supercharged 5.0L Coyote engine has proved to be remarkably reliable when operating at maximum capacity which is said to approach if not exceed 1000 horsepower...
Chevy’s New 405 HP ZZ6 Smallblock
Chevrolet introduces the newest member of the small-block family, the ZZ6 Turn-Key crate engine. Delivering a solid 405 horsepower and 406 lb-ft of torque at 4,600 rpm, the ZZ6 remains a solid competitor...
New Boost Lock Prevents Boost Loss
Boost Lock is an innovative new product specifically designed to prevent the separation of inlet boost tubes under high boost conditions. When this occurs during a race you lose...
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 of great looking engines that were seen that the 2015 Street Machine Nationals. No doubt, you'll find more than few to your liking...
Holley Ultra HP Now For E85
Holley has raised the bar on E85 race carburetors. Holley's popular 4150 Ultra HPs are now available with components and calibrations making them ready for ethanol. They’re available in 600, 650, 750, 850 and 950 CFM and all come in the exclusive Hard Core Gray hard-anodized finish...
RTST Ported Flow Testing Valves
The RTS kit permits precise mapping of the airflow values around the circumference of the valve at any lift value. It helps identify shrouded...
Supercharged! Design, Testing and Installation of Supercharger Systems
Corky Bell is widely acknowledged for his expertise in turbocharging and supercharging. His new book Supercharged! Design Testing and Installation of Supercharger Systems is the ideal reference book for both novice and experienced forced induction fans. The book primarily covers fuel injected applications with very little mention of carbureted setups. That said, many of the calculations and math still apply and a dedicated effort can still make use of them. In effect this is a near textbook treatise on fuel injected forced induction and it includes the planning, construction and implementation of an intercooled BMW engine with electronic fuel injection […]
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 end operating in a pent-roof combustion chamber and actuated by dual overhead camshafts. One hundred years and millions of racing miles later this configuration is still the most desirable racing design...
Fifty Years with Valley Head Service
Fifty years ago this month Larry Ofria began porting cylinder heads in a run-down old chicken coup at the family property on Sherman Way in Reseda, California. Larry and the engine savvy crew at Valley Head Service are recognized far and wide for their contributions to the advancement of high performance engine...
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 bolts? Call ARP. Need a complete fastener kit? Call ARP...
Holley Introduces Vent Tube Spill Reduction Valves
Holley's new Vent Tube Spill Reduction Valves feature an internal valve ball that reduces fuel spillage from carburetor vent tubes in crash situations and reduces fuel slosh from vent tubes during hard launches/stops or while traversing rough terrain in...
Lunati Bootlegger Cams
The most powerful series of street performance cams ever produced by the Lunati design team. They build on the popular Voodoo® Series, but feature even faster opening rates, a controlled closing and far more area under the lift curve.