Whether your vehicle is a GTO, Fire Bird, Trans Am, Lemans, or a timeless classic, here at Pro-formance Unlimited we are here to help design and build the engine combination that will match you with your vehicle. Please browse our crate engines listed below or custom design one of your own. From that special built stroker engine to that turn-key drop in ready crate engine, call Doug or Steve we will be happy to answer any of your questions.
The Pontiac V-8 was the power plant for a whole generation of muscle cars, including the legendary GTO and Firebird Trans Am from the late 60’s to early70’s. The renewed popularity of muscle cars has restored the interest of hobbyist rebuilding and modifying these engines. Although these blocks are few in numbers, they can be found and can also be totally custom rebuilt to any specific horsepower. The 350, 400, and 455 are interchangeable but today most Pontiac enthusiasts want the 455 with aluminum cylinder heads. With this combination we can make over 550hp with incredible torque for the dream machine muscle car.