Custom Built Stock, Performance, and Race engines

Custom Crate Engines by Proformance Unlimited is one of the leaders in the muscle car industry. We build all kinds of hot rods engines that will suit the needs of nearly every car enthusiast. Our dedication to detail in our engine build separates us from the rest. Check out our reviews and take a look at some of our YouTube videos. You will spend hours watching them. All of our crate engines are hand assembled one at a time using only the finest parts available. Every one of our complete turn-key crate engines we build are dyno tested to ensure durability and power output. With these standards we can assure you that you will receive a 100% perfect engine that will stand up to the test of time. People choose to have a crate engine built by us over building their own since we can customize the engine to your desired spec’s and it’s assembled by our highly experienced staff. So the day’s of back and forth trips to the machine shops, trial and errors and expensive mistakes are a thing of the past.


Chevy Crate Engines


Ford Crate Engines


Chrysler Crate Engines


Oldsmobile Crate Engines


Cobra Crate Engines


Pontiac Crate Engines

I would like to take this opportunity to thank you for your interest in Custom Crate Engines and introduce you to our company. As you can see from our photos and videos each engine is built to precision with much pride and care. 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. This statement reminds me of a quote i heard once “Those who can, do. Those who can't, teach”. We dyno test literary 100’s of engine combinations each year and with our skills and knowledge you will know you made the right choice. We personally custom design the proper power plant to match you to your vehicle and its needs. We will be up front and honestly tell you, If your engine selection is right for you and the final application. Doing this ensures that you end up with your dream engine that will stand the test of time. We are most proud of our satisfied customer base. When you purchase an engine from Custom Crate Engines you become part of a growing family and you can be assured you made the right choice. You have my personal guarantee that I will build you a product we both can be proud of.

Thank you,

Doug Mascaritola - President

Great Engines Come From Great Tech Support

We know what business is, so we understand "schedule & budget". With Custom Crate Engine, you control your project completely, everything is tailored to your needs and wants. If you choose us, you will be working with an expert in the field of engine building and driveline design. We are constantly expanding our knowledge to help find the latest trends in technology to serve you better. The owner is involved in every engine design and build. We have over 38 years of machine shop experience, Owner is an award winning engine builder All of our engines are dyno proven horsepower. Tech support on all engines sold. Only top quality parts used One on one customer support All engines are custom built to your specifications making it more personal. We have been selling engines world wide for over 12 years with satisfaction guaranteed.

Big Block Engine

Chevy Big Block Engine

Crate Engine

Ford Crate Engine

Crate Engine

Pontiac Crate Engine

Performance Engine

Chrysler Performance Engine

Street Performance Engine

Oldsmobile Street Performance Engine

Kit Car Engine

Cobra Kit Car Engine

  • Kim Sellers

    Hey Doug, Just wanted to thank you and your staff for the great service. My 69 Judge is strong! Proformance Unlimited is number one in my book. Kim Sellers Lancaster, SC

    - Kim Sellers

  • Larry

    These are pictures taken of Larry Six's 1967 Camaro SS/RS 383-475 HP. You guys did a great job--runs great, sounds great. By they way, this is my first new car I bought in April of 1967. Still a GREAT ride! Thanks so much, L...

    - Larry

  • Jeff DiMauro

    Here are some of the pictures of a 1940 Chevy 2 Door Sedan with the 350/375 HP engine I got from ya'll several months ago. The engine is great and all I expected. Still have some work on the car and going to take awhile. Thanks Regards Jeff...

    - Jeff DiMauro

  • Scott in Maryland

    Doug, Steve and the Pro-Formance Unlimited Team -- Just a short note here to let you all know how pleased I am with my 302-380 HP custom engine by Pro-Formance Unlimited. The engine runs great and is every bit of product you advertised...

    - Scott in Maryland

  • Tom T.

    Great group to work with. Won't hesitate to get my next motor from these guys. Tom T. Bordentown, NJ

    - Tom T.

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