Chevy crate performance engines, 350, 383, 402, 396, 427, 454, 502

Small Block Chevy Engine's:

327 375HP 350 270HP 350 295HP 350 320HP 350 335HP 350 375HP		350 425HP 350 440HP 383 400HP 383 450HP 383 500HP 427 550HP

Big Block Chevy Engine's:

427 450HP 454 475HP 454 550HP		502 550HP 540 630HP

     As most Chevy enthusiasts know, the '55 Chevy made a huge impact on the automotive market when it showed up, and much of that impact came from the all-new 265-inch V-8 engine. An engineering milestone, the small-block almost instantly changed the poky image that Chevrolet had earned with its Stove bolt six. The new V-8 was peppy, compact, and, unlike competitors' V-8 power plants, it was light. It became known as the mouse motor, made big strides in its first few years. As most Chevy enthusiasts know, the '55 Chevy made a huge impact on the automotive market when it showed up.

     A new generation of big-block V-8s made a big impact in the '60s as well. The 396 made its debut in 1965, and was a standout performer in Corvette trim, pumping out 425 hp. A 375-horse version made it into a select few '65 Chevelle's (Z-16s), and by '66 the SS396 package was a big seller in the Chevelle’s line. A larger, 427-inch big-block added more heat to the Corvette that year, paving the way for the legendary L88 the following few years. The big-block eventually grew to 454 cubic inches, and by 1970 cranked out 450 hp in LS6 trim.

     Throughout the '60s the small-block V-8 really came into their own. Fuel-injected 327s making up to 360 hp were highlights of the next generation of Corvettes, the Sting Rays. Carbureted 327s found their way into the '65-67 Nova SS's. The '66 Nova SS, when equipped with the available 350hp (L79) version of the 327 "Turbo-Fire" V-8, was one of the hottest performers in the compact class. In 1967, the most popular configuration of the small-block V-8, the 350, made its debut. It found a welcome home in the newly introduced Chevrolet Camaro.

    Of course, a new generation of big-block V-8s made a big impact in the '60s as well. The 396 made its debut in 1965, and was a standout performer in Corvette trim, pumping out 425 hp. A 375-horse version made it into a select few '65 Chevelle's (Z-16s), and by '66 the SS396 package was a big seller in the Chevelle’s line. A larger, 427-inch big-block added more heat to the 'Corvette that year, paving the way for the legendary L88 the following few years. The big-block eventually grew to 454 cubic inches, and by 1970 cranked out 450 hp in LS6 trim.

     Today 38 years after introduction the small-block is the most popular engine in the enthusiast market with the vast array of performance parts available to turn them into a mild 325 horse power to a wild tire smoking stroker engine with 510 horse power. The big-block Chevy or the rat motor as it was referred to in the early hot roding became the standard for brute power for the serious street machine to all out competition racing.
If you are restoring your early Chevy we can upgrade the horse power and still keep it looking original. Please call us for details.

    Whether your vehicle is a Corvette, Camaro, Nova, Chevelle, or just and early 60's muscle car here at Pro-formance Unlimited we are here to help design and build the performance engine that best suits your vehicles needs. Please browse our performance crate engine combinations listed below or custom design one of your own. Pro-formance Unlimited is best known for our precision custom designs. From that special built stroker engine to that turn-key drop in ready crate engines, call Doug or Steve we will be happy to answer any of your questions.