News & Reviews

dart Little M block

1200 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...
sohc cammer

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 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...
ARP BOLTS

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 your high performance engine and other performance components together under high stress dynamic conditions. No one understands this better than ARP...

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?

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 Builds

dart Little M block

1200 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...
sohc cammer

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 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 ...