Engine Tech / 153 posts found
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 all know the time honored method of offsetting the seal parting lines so they do not match the main cap to block interface...
Building the 750 HP Ford Cobra Jet
Ever wonder how carefully your Cobra Jet drag racing engine gets assembled at the factory? No doubt you've seen old newsreels with sweaty line workers ramming pistons into cylinder blocks on an endless conveyor line or...
663hp 434ci Small-Block Street Engine
When tasked to build a 650hp+ street engine with lots of restrictions, Mike Petralia's Hardcore Horsepower, LLC in Franklin, TN crafted this 434ci beast ...
How to Build Racing Engines: Guide to Torque and Horsepower
Competition engines are designed and built to generate maximum torque and horsepower for their size and intended operating environment. Torque is the heart of the matter. Defined as...
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 people still don't take advantage of them ...
Earl’s New Vapor Guard Hose and Fittings
Earl's new Vapor Guard hose and hose ends provide a complete, economical solution that virtually eliminates fuel permeation issues common with...
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 capabilities, the 90 year old company functions seamlessly within the high stress, low tolerance OEM environment where quality control inspections are mandatory and frequent. An essential part of Johnson Lifter’s quality control program is identifying and solving common lifter issues. In particular, hydraulic valve lifters have long suffered the notion that they are no good for performance use, but that is far from accurate. Johnson puts a check mark on that fallacy and points to the success of Chevrolet’s ultra high performance COPO […]
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...