The Pontiac V-8 Was The Power Plant For A Whole Generation Of Muscle Cars, Including The GTO And Firebird Trans Am From The Late 60's To Early70's. The Renewed Popularity Of Muscle Cars Has Restored The Interest In Rebuilding And Modifications Of 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.

Browse Through Some Of Our More Popular Designs For The Turn-Key Drop In Ready Crate Engines Listed Below. Keep In Mind If You Do Not See Your Combination Listed, Proformance Unlimited Will Assist You In Your Selections To Custom Design And Build The Engine Of Your Choice. For More Information Or To Place An Order, Call And Ask For Doug Or Steve We Will Be Happy To Assist You.