News & Reviews

QMP Racing Shop Tour

September 2, 2020
For twenty years, QMP Racing has been providing high quality race engine building and machine shop services to the greater Los Angeles…

Speed Demon Blasts 481 MPH with BBC Duttweiler Power

August 19, 2020
George Poteet’s Speed Demon blown fuel streamliner is now officially the world’s fastest...

Normally Aspirated C7 Z06 Build

The core structure of this engine is a new GM Gen V LT1/LT4 cylinder block both of which share the same part number. As seen here,…

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 crank yielding 495 cubic inches…

New API Lubrication Standards Published

Working with the auto industry, oil marketers, additive companies and others, the American Petroleum Institute (API)...

Understanding Tribology

The tribologists at Total Seal use a tool called the Stribeck curve to engineer low friction piston rings. The Stribeck curve utilizes…

AFR Introduces New SBC Dual Plane Intake

February 7, 2020
AFR is proud to announce the release of its new #4812 dual plane aluminum intake manifold for the popular small block Chevy engine…

Holley Modernizes Classic Carb Line

January 30, 2020
Holley is pleased to announce the revamp of its existing "Classic Carburetor" lineup - Beginning with the 0-1848-2...

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 has to be changed every 5,000 to…

850 HP HELLCAT KILLER!

"We're calling it The Hellcat Killer", says Mike Petralia, owner and chief engine builder at Hardcore Horsepower & Dyno...
JESEL ROCKERS

JESEL Reintroduces Premium Stud Rocker Systems

Jesel has built its brand of valvetrain innovation with shaft rocker systems there are some race sanctioning bodies that still prohibit…

Featured Story

Exclusive! Inside the Speed Demon's Blown Fuel Streamliner Engine
 George Poteet's new Speed Demon streamliner knocks off another speed record with turbocharged LS Power

Engine Builds

Normally Aspirated C7 Z06 Build

The core structure of this engine is a new GM Gen V LT1/LT4 cylinder block both of which share the same part number. As seen here,…

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 crank yielding 495 cubic inches…

850 HP HELLCAT KILLER!

"We're calling it The Hellcat Killer", says Mike Petralia, owner and chief engine builder at Hardcore Horsepower & Dyno...

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 supercharger combined with E85…

383 Chevy: Beyond the Crate!

Is the 383 Chevy the Most Popular Small Block Ever? That's easy to believe based on the number of rotating assemblies sold by Scat…
hemi inlet stucks

Hardcore Hemi Attacks the Engine Masters Challenge

The Adams and Smithberg team injected Hemi entry at the 2017 Engine Masters Challenge displayed one of the most unique active-tuning…
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 rear wheel drive may soon deliver…
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 a remarkable variety of supercharging…
pro street

Boosting a 482ci Ford SOHC Cammer

When exotic excess isn't quite enough to satisfy the power demons lurking within, artificial aspiration frequently brings the heavy…

A 735hp 438ci Small-Block Ford Bullet

This 438ci 735 HP Ford drag racing engine represents Hardcore Horsepower's unconventional, but forward-thinking effort to create…
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 you've seen old newsreels with…

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…

Tech Tips

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 nuts...
compression ratio

Understanding Dynamic Compression Ratio

Your engine actually has two compression ratios, static compression ratio and dynamic compression ratio.
RTS PD Valve

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…
Engine Builing

Engine Building Rules Part 1: Planning

Consider a typical performance engine build plan that holds true for many budget based bracket racing builds and illustrates how…
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 cam timing affect engine behavior.…

Camshaft Basics

Pushrod based engines use two basic types of camshaft; either flat tappet or roller tappet. It’s a little more complicated than…
Piston Speed

Calculating Piston Speed

Mean piston speed has long been used as an indicator of component durability under severe service. It is a good rule of thumb for…

Porting Pointers

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

Tuning Tips for Intake Manifold Deficiencies

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

How to Use a Dial Indicator

June 5, 2012
Dial indicators are one of the primary measuring tools used in precision engine building. They are typically used to measure deck…
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 between adjacent surfaces like the…

Priority Main Oiling

May 13, 2012
Most OEM and aftermarket race cylinder blocks are configured for priority main oiling to protect the main bearings at high RPM.…