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

Nations Leader In Custom Built Turn-Key Performance Crate Engines

Being on the worlds stage, Proformance Unlimited is one of the most sought after engine builders. We build a variety of hot rods engines that will suit the needs of every car enthusiast. Our dedication to detail and quality parts is what separates us from the rest. Check out our customer reviews and crate engine videos and you will see that our muscle car engines will exceed your expectations. Our customers tell us they spend hours watching our dyno videos.

With our strict standards, you can be rest assured that you will receive a 100% perfect engine that will stand up to the test of time. Our highly experienced staff knows what it takes to customize your engine and tailor it to your needs. The days of back and forth trips to the machine shops, trial and errors and expensive mistakes are a thing of the past.

Is your current Chevy, Ford, Pontiac, or Chrysler engine tired and worn out? Are you unable to keep up with the Honda Civic down the street from you? If so then you are in serious need of an upgrade from Proformance Unlimited Custom Crate Engines. With that being said, Let the experts design and build you a crate engine that will allow you to dominate the street. We can also custom paint the engine to match your project. If you are in the market for a transmission to match your application we work with some of the best transmission builders in the country. We are a one stop shop for all your complete drive train needs.

Check out our complete line of Custom Built Crate Engines.

Chevy Crate Engines

Ford Performance Crate Engines

Mopar Turn-Key Crate Engines

LS Crate Performance Engines

MK4 Roadster Engines

Pontiac Crate Engines

We Also Build Airboat Race Engines!

Engines Powered By Proformance Unlimited Are “Street Smart & Track Tough.” If Horse Power and Torque Is What You Want, Look No Further! The Quality Of Our High Performance Engines Are Second To None! We Build, Test, And Tune All Our Engines Start To Finish!

Thank you for taking the time to look at our engine products. Each build is hand assembled one at a time. All engines are custom built to order to assure that your crate engine will arrive just the way you need it.

Our staff is also available to answer any technical questions you may have before and after your engine arrives. We are most proud of our satisfied customer base. When you purchase an engine from Proformance Unlimited you become part of a growing family and you can be assured you made the right choice. You have our personal guarantee that we will build you a product we all can be proud of.

Pontiac 461CI Stroker Customer Testimonial

Another Happy customer of Performance Unlimited!I can speak to longevity since I purchased the build 6 years ago. Still running very strong, no problems at all. It took me a while to do the complete frame off restore of my 68 GTO. I chose Performance Unlimited for my 461ci engine build with great results. I specified that I wanted drivability, longevity, …. oh yeah and...

Proformance Unlimited Review 400CI Pontiac Crate Engine

Hello, Just putting the finishing touches on the 66 GTO, you guys built me an awesome Pontiac 400 engine and I can’t thank you enough for helping me bring my son (Jeremy) dream car into a reality. It looks outstanding with outstanding sound and power. THANK YOU, THANK YOU, THANK YOU!!! Arthur Palm Coast, FL

From Total Wreck to Beautiful Street/Show Car

From Total Wreck to Beautiful Street/Show Car John MachaqueiroApril 24, 2019 After a very long and tumultuous journey, 2016 marked Sue Pellegrino’s baptism by fire when she entered her 1966 Mustang fastback into its first car show. To her surprise, she took a First Place trophy for her efforts, and later found out that the coordinator of the show had told her husband,...

Differences In Stroker Engines

To have an engine make more power a common technique is to increase cubic inches. That can be done 3 different ways: increase bore size, the length of the stroke, or a combination of the two. The term stroker is used when referencing high-performance engines but let's get into what it really means.A stroke is an engine that has the stroke of its crankshaft increased...

The therapeutic benefits of a hotrod

The therapeutic benefits of the far-from-perfect, anything-goes rat rodSome see junk, I see treasure…art on wheels. Photos by the author except where noted.Your first car may have been like mine. Rust everywhere, peeling paint, torn upholstery, smelly interior, worn out clutch, engine that burned oil…you name it, my 1951 Mercury had it.That was about 60 years ago. You...

Remembering Nitro Drag Racing Legend Frank Rupert

On Friday, January 4, 2019 nitro funny car legend Frank Rupert passed away at 77 after suffering a heart attack. He spent his final days with his family and friends and his son, decorated Nostalgia Nitro Funny car driver Jason Rupert, carries his father’s racing legacy forward.Frank’s career began in the 1960s when at age 19 he began racing in the B/ and C/dragster...

Modern Cars Equate to Higher Insurance Bills

As the vehicles we drive evolve into massive computers on wheels, they are becoming increasingly delicate and lead to higher insurance bills.Chips and dents to the body of your ride a decade ago wouldn’t have been a big deal, but now small dents can push important sensors out of alignment or break them entirely.For example, today’s cars house sensors in places like...

Proformance Unlimited Review 383CI SBC Stroker Crate Engine

Hey Steve! I just got my car back last week after the engine swap and I'm actually still alive! You guys built a fabulous 383 Stroker - 450H.P. engine for my '80 corvette and it runs and sounds every bit as good as i had hoped. It really screams, and afterwards, I do too, like an 8-year old girl gettin' a pink ribbon. So...THANK YOU, THANK YOU, THANK YOU!!!Stuart...

Proformance Unlimited Review Chevy 383CI Stroker Engine

Thank you guys so much for building an awesome engine! This 383 stroker screams at 400 hp! The shop that installed my motor was very very inpressed! The engine was shipped already tuned and all dialed in! They had a Roush mustang and they said that my engine that was built by profornance unlimited was heads above the Roush. The roush couldn't touch it! The car drives...

Proformance Unlimited Chevy 383 Stroker Engine Customer Review

In 2014, I decided that I wanted to upgrade and rebuild a 1937 Ford Cabriolet that had been my father-in-law's for over 20 years. So....I began with the engine and transmission. I contacted Performance Unlimited at the time in NJ. Steve worked with me to design the engine of my dreams for this car. We build a 383 Stroker using a GM 350 block. This engine is a standard...

Customer Testimonial Chevy 383CI Crate Engine Proformance Unlimited

I purchased this 383/510 back in 2004 and now have it in an 85 Blazer with 5 speed. 13 year old motor runs better than ever! Fastest combo I've ever had. Proformance Unlimited delivers QUALITY performance.

Chevy 454CI Crate Engine Review Proformance Unlimited

WOW!! Great experience dealing with Steve. He was very helpful with any question and resolving any questions.This is the car that your 454 engine promotion video went in. It was the 2017 Second place winner in its class at World of Wheels in Pittsburgh and First Place 2017 Street Achievement Award in paint. The car and 454 engine are head turners.Tim Rodgers...

Customer Testimonial Chevy 427 Crate Engine Proformance Unlimited

Steve,Here are some pics of the bad ass 427 stroker you guys built for my 1966 Chevy II.

Proformance Unlimited Customer Review Chevy LS7 427CI Crate Engine

Customer review of Proformance Unlimited's Chevy LS7 427CI crate engine which was installed into a '64 Pontiac GTO.

Customer Review Chevy Camaro Crate Engine Proformance Unlimited

Steve,The car is being broken in as I type. I have about 100 miles on the new engine and it is perfect.I can`t thank you and your team enough for building this for me and assisting me through the process.I had it installed over a weekend and then did the modification for the vacuum.Here are a few pictures. If there are any certain pics you want let me know. My son has a...

Proformance Unlimited Customer Review Chevy LS Crate Engine Melbourne, FL

Steve, My name is Mike C. I’m the mechanic that installed the LS you guys built for Robs 69 Chevelle. I would like to say you guys did an awesome job. You delivered exactly what you said you would. A turn key engine that produces gobs of torque and HP. I literally had to do nothing after the install except program the computer to turn on the fans. Great job. I’m...

Customer Review Chevy 383CI Corvette Crate Engine

The 383 stroker that you built for my 77 vette is just awesome! The car sits in a storage unit months at a time. However, it always fires right up without any hesitation and runs fantastic! I can't tell you enough good things about this motor and how reliable it is! I haven't have one single issue with this engine. thank you for building me a FANTASTIC motor! you guys...

Ford 408CI 351W Stroker Engine Customer Review

Hello Steve, Doug and Team Thank you so much for the wonderful build of my Ford 408 Stroker motor. I bought this 1965 Mustang fastback at age 19 just before I went into the Navy. I traded a 1965 Mustang notchback (my first car), a dirt bike, and 900 dollars for it. It was wearing Shelby clothes when I got it but it is not a Shelby. I drove it for a while and then put it...

Customer Review Of Proformance Unlimited’s Ford 347CI Stroker Engine

Steve,Finally got the transmission issues behind me and have the C6 installed. Can't thank you enough for the awesome motor! Here is the burnout video you asked for. I will be racing at Hemmings "Musclepalloza" on Labor Day weekend and will let you know how it does.I will be using you again if I get another project in the works. Again thanks for the fantastic...

Proformance Unlimited Ford Mustang Crate Engine Customer Review

Steve I can't thank you enough for the great engine you built for me . We started it yesterday for the first time and it fired on the first crank and ran great!

Customer Review Ford 347CI Crate Engine Proformance Unlimited

I would like to thank Steve, Doug and all the team at Proformance Unlimited for a fantastic job on my 400 HP 347 build that actually did 360 HP on the dyno. The quality of craftsmanship was much better than it needed to be for my satisfaction. The attention to detail was the best I have ever seen. I would highly recommend Proformance Unlimited to any one looking to...

Proformance Unlimited Customer Review Ford 408CI Crate Engine

This is the difference in who you get to build your crate engines.We contracted Proformance Unlimited to work with us in building the 408 Injected Roller Windsor for the XY build for one reason.......experience!There have been literally hundreds of "Crate Engine" companies starting up since they became popular 🙄 but nearly every one of these are simply "fitters".....they...

Customer Review Proformance Unlimited Ford 302CI Crate Engine

I have had my 302 for around 5 years now, and i must say it is faultless and exceeded all expectations. A quality build couldn't be happier, the only time i have had to put a spanner on it is for servicing.A big thanks to the guy's at Proformance Unlimited.Craig

Customer Review Ford 347CI Stroker Engine Proformance Unlimited

Thanks to you guys. I love my 347 stroker that you built for me. It's torque powerful and it's not bad with gas. You are very nice and professional people. I'm very pleased. Keep up the good work and thanks a million!

Customer Review Ford Mustang 347CI Crate Engine

A big thank you to Steve and the crew at Custom Crate Engines.My 64 1/2 Mustang turned out better than I anticipated. I receive compliments ever time I take the car out for a ride.Steve was instrumental in helping me with my install and set up. If you want the best, buy from the best !Custom Crate Engines !!

Proformance Unlimited Ford 347 Crate Engine Customer Review

Just wanted to drop you a note. I bought this 347 from you in December and have put about 5000 miles on it so far. We just got back from the Falcon Nationals. We drove from just South of Baton Rouge to Wichita Kansas and back a total of 1665 miles. We had absolutely no trouble with the engine. It still has plenty of power and runs great. Everything is still clean and...

Proformance Unlimited Ford 347CI Stroker Engine Customer Testimonial

Hey Guys,Just wanted to send an update on my 56 Ford F-100. I'm sure u recognize that 347 stroker , Cant wait to get it started so i can hear that thing Purr especially with the cutouts !!Thanks again guys , after researching many engine builders I'm sure i chose the right one.Dean S


733 North Drive
Suite B
Melbourne, FL 32934
PH: 800-267-3940

Shop Hours:
Mon–Thur 7am – 4pm EST
Friday Closed

Phone Hours:
Mon–Thur 8am – 5pm EST
Friday 8am – 3pm EST

*Engine shown with optional upgrades