Reliable, Custom Built Crate Performance Engines
Toll Free 1-800-267-3940

About Proformance Unlimited

  Award winning engine builder, Doug Mascaritola, is the owner of Proformance Unlimited. He began his business with the passion and desire to be the best. At the age of thirteen, Doug started working at his family’s machine shop. The school bus would drop him off everyday at 3:30 and he would work until dark. Doug had a lot of fun learning the skills of his trade. Back then, his brother-in-law Eddie called it boot camp. Little did he know it would become his way of life. At Proformance Unlimited they build over three hundred engines a year and pay close attention to detail on each and every engine as if it were their own. Doug and his staff are committed in maintaining their reputation through building the finest engines available worldwide on the market today. Doug wants his customers to know that with his skills and knowledge, Proformance Unlimited designs “Engines with an Attitude” to perform for street and/or track use. 

  There is a lot more in technical design than just picking out parts. With so many companies out on the web today to chose from, it’s hard to make a decision. Some may talk a good game and present themselves well, but can they really deliver your dream engine. With Doug’s talent of putting together winning combinations you will know you made the right choice. He personally custom designs the proper crate engine to match you to your vehicle for many years of dependable and pleasurable driving.

Need A Cobra Kit Car Engine

Cobra Replica Engines


Blower Engine

Check Out This Wild 383 Supercharged Engine


We Treat Everyone Like A Celebrity

El Camino

Doug’s Magical Car Is Finally Complete

Sports Car Revolution TV Show


Lovell Rock Racing

Wins First 2 Races Of The 2008 Season. With Proformance Unlimited’s 347 400HP Race Engine

Funkmaster Flex

Funkmaster Flex and Doug

“Flex Some Muscle Together”

Funkmaster Flex Bio

An Engine Builder You Can Trust 24/7

Marine Race Engines

We Also Build Marine Race Engines. You Want To Run With The Big Dogs or do you want to sit on the porch with the puppies. Proformance Unlimited, we are Top Dog!

Driven Racing Oil

Click image to see why Proformance Unlimited only trusts Joe Gibbs Race Oil in our engines

Crate Engines Proformance Unlimited

MAHLE Clevite
Champion Technician Contest 2011 Doug placed in the top 10

Well known muscle car enthusiast, Funkmaster Flex, is the man that celebrities contact when they are building their hot rod. Proformance Unlimited will be flexing some muscle on one of Funkmaster’s Chevy Malibu’s. Check out the build and installation of a 427 big block Chevy.

Doug & Flex At Flex’s Car Show In Edison NJ

Sully Erna Lead Singer Of Godsmack. Joins The List Of Celebrities That Cruises With A Proformance Unlimited Crate Engine

Musa Smith Of The New York Jets Runs With Proformance Unlimited Under The Hood Of His Donk


Doug got pulled over for speeding and this is how the cop found Murphy in the back seat. There was no getting out of this ticket.