Blown Big-block Built for the Street Pulls 1,000-Plus Horsepower

Thousand-horsepower street engines are not that uncommon in a variety of configurations these days — including LS, Mod motor and import V6 platforms. Besides more emphasis on boost, there have been incredible advancements in late-model head design and street-friendly cam profiles.

But a blown big-block like this 572ci Rat built by Tennessee-based Precision Race Engines still commands the most attention while cruising the boulevard. The eye-catching 8-71 blower and imposing exhaust rumble make it the most jaw-dropping powerplant on the street — even if it isn’t the fastest or most nimble.

“We’ve built a number of these engines,” says Precision’s Mark Davis, noting that idle quality and off-idle response are often the top priorities for customers.

This engine is based on a Dart iron block and includes a Callies forged-steel crank, Callies steel rods and RaceTec 9.5:1 pistons. The bottom side comprises a Moroso 7-quart pan and Melling high-volume oil pump.

“The cam is just big enough for the cubic inches with a lobe separation to keep the idle friendly,” says Davis.

Precision massaged a set of Pro-Filer heads before joining the short-block along with a Weiand manifold, Dyer’s 8-71 supercharger and a pair of Quick Fuel 950 cfm carbs. Then it’s up to the MSD ignition to light the candle.

Running with a 4-percent underdrive and on 93-octane fuel, the engine pulled 1,019 horsepower at 7,000 rpm on the dyno with 860 lb-ft of peak torque.

“You could step up to 10 or 15 percent overdrive and get 1,150 or more horsepower,” says Davis, noting that the engine will go into a ’79 Camaro.

Such an engine will cost around $25,000 but for those car owners looking for the ultimate expression in street muscle, here’s the ticket!

About the author

Mike Magda

Mike Magda is a veteran automotive writer with credits in publications such as Racecar Engineering, Hot Rod, Engine Technology International, Motor Trend, Automobile, Automotive Testing Technology and Professional Motorsport World.
Read My Articles

Hardcore Chevys in your Inbox.

Build your own custom newsletter with the content you love from Chevy Hardcore, directly to your inbox, absolutely FREE!

Free WordPress Themes
Chevy Hardcore NEWSLETTER - SIGN UP FREE!

We will safeguard your e-mail and only send content you request.

Chevy Hardcore - The #1 Performance Bowtie Online Magazine

We'll send you the most interesting Chevy Hardcore articles, news, car features, and videos every week.

Chevy Hardcore - The #1 Performance Bowtie Online Magazine

Chevy Hardcore NEWSLETTER - SIGN UP FREE!

We will safeguard your e-mail and only send content you request.

Chevy Hardcore - The #1 Performance Bowtie Online Magazine

Thank you for your subscription.

Subscribe to more FREE Online Magazines!

We think you might like...



Hot Rods & Muscle Cars

Corvette Enthusiasts

Street Rods

Chevy Hardcore - The #1 Performance Bowtie Online Magazine

Thank you for your subscription.

Subscribe to more FREE Online Magazines!

We think you might like...

  • Hot Rods & Muscle Cars
  • Corvette Enthusiasts
  • Street Rods

Chevy Hardcore - The #1 Performance Bowtie Online Magazine

Thank you for your subscription.

Thank you for your subscription.

Chevy Hardcore - The #1 Performance Bowtie Online Magazine

Thank you for your subscription.

Thank you for your subscription.

Loading