News & Reviews

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 issues have plagued GEN III Chrysler Hemi engines for years. Internet forums are awash with tales of engine failures, high repair bills and annoying noises often referred to as the “Hemi Tick”.
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 the first piston powered 450 mph speed record at Bonneville. And we just showed you how they're going to do it...
edelbrock efi sump pump

New Edelbrock Universal EFI Sump Fuel Kits

Edelbrock Universal EFI Sump Fuel Kits are designed to provide the necessary high fuel pressure required for EFI applications in vehicles equipped with a low pressure carbureted fuel system. It’s a complete self-contained compact system that can be...

Factory 409 Fuel Injection: No Really!

In a bid to improve power and economy, GM engineering staff undertook extensive research on fuel injection options for W-motored cars and trucks back in the day. This research was conducted in the late fifties as you will note from the accompanying GM memo...
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 options and supporting components. Whether carbureted or fuel injected, the responsive aftermarket has provided...
ARP Metric bolts

ARP Expands Metric Bolt Selection

June 13, 2017
Automotive Racing Products, ARP, has grown its selection of “bulk” metric bolts to cover sizes from very tiny M6 with a 12mm underhead length to a large M12 x 100mmn UHL offering. The M6 bolts are made with a 1.00 pitch count, the M8 fasteners have a 1.25 count, M10s come...
Ford Canmer engine

Boosting a 482ci Ford SOHC Cammer: Part 1

When exotic excess isn't quite enough to satisfy the power demons lurking within, artificial aspiration frequently brings the heavy heat. Jim Ring's 1964 Galaxie is an off-the-hook Pro Street ride that demands an over the top powerplant to help make the Pro Street statement.

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 few sour comments by desktop experts still insisting it was a revised 409 W-motor. So we decided to solicit more facts straight from the horses’ mouth. We consulted an old...
427 mystery motor

Chevrolet 427 Mystery Motor

Most of the testing and development was done with 409ci versions. Development engineers were able to generate the required power at that displacement, but in October of ‘62 negotiations with NASCAR resulted in approval to enlarge it to 427ci to gain parity with Ford. A mad rush ensued to design longer 3.65-inch...

Featured Story

Exclusive! Inside the Speed Demon's 450 MPH+ Turbo Engine Packages
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?

Engine Builds

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 the first piston powered 450 mph speed record at Bonneville. And we just showed you how they're going to do it...
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 options and supporting components. Whether carbureted or fuel injected, the responsive aftermarket has provided...
Ford Canmer engine

Boosting a 482ci Ford SOHC Cammer: Part 1

When exotic excess isn't quite enough to satisfy the power demons lurking within, artificial aspiration frequently brings the heavy heat. Jim Ring's 1964 Galaxie is an off-the-hook Pro Street ride that demands an over the top powerplant to help make the Pro Street statement.

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 Enterprises. It's also noteworthy that the 383 originated from the performance community in the late seventies and became so popular that...

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 a strong single four-barrel engine based on an all Windsor parts collection. The result is one bad ass...
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 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 ...

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 pump gas.

383 Beyond the Crate LT1 Parts List

The following parts for the Beyond the Crate 383 project are all available through Summit Racing except where noted. These are the Summit part numbers which you can use to find them on Summit's web site.

Tech Tips

compression ratio

Understanding Dynamic Compression Ratio

Your engine actually has two compression ratios, static compression ratio and dynamic compression ratio.
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...
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 shrouded...
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 insufficient research and planning can steer an engine project down the wrong path right from the beginning. The first mistake is...
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. Engine builders can refer to these characteristics often to determine the likely effect of any cam timing alterations they may contemplate...

Camshaft Basics

Pushrod based engines use two basic types of camshaft; either flat tappet or roller tappet. It’s a little more complicated than that, but it basically comes down to the type of lifter. Up until the mid-eighties most production engines used flat tappet lifters with a crowned face that rides directly on the camshaft lobe...