Not Every Engine Builder Can Build Chrysler Performance Engines.  Proformance Unlimited Builds Them All!! Our Chrysler engines have both the small block (318 & 360) and big block (383, 400 & 440) drop in ready crate engine packages available. The Chrysler engine was built with non-adjustable valve trains therefore special attention must be considered when choosing your pistons and camshafts. We build these particular engines with adjustable rocker arms to accommodate high compression large lift and longer duration cam shafts. There are a vast array of performance parts available to turn your Chrysler from a mild 275 horse power grocery getter to a wild tire smoking stroker with high horse power. If you are restoring your early Chrysler engine we can upgrade the horse power and still keep it looking original. Please call us for details. Whether your vehicle is a Dodge Charger, or the sharp tooth Barracuda or even a timeless 60's classic, here at Pro-formance Unlimited we are here to help design and build the combination that best suits your vehicles needs. Please browse our crate engine combinations listed below or let us custom design one for you. Pro-formance Unlimited is best known for our precision custom designs. So if you are looking for a special Custom built crate engine call Doug or Steve and we will be happy to answer any of your questions.

Chrysler Performance Engines

408  Stroker 450HP Eagle Forged Rotating Assembly Edelbrock Aluminum Heads Roller Camshaft   440  400HP   440  475HP Edelbrock Aluminum Heads               500 Stroker 525HP Eagle Forged Rotating Assembly Edelbrock Aluminum Heads Roller Camshaft

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PROFORMANCE UNLIMITED INC. RESERVES THE RIGHT TO MAKE CHANGES IN DESIGN OR TO MAKE ADDITIONS TO OR IMPROVEMENTS UPON ANY OF ITS PRODUCTS AT ANY TIME WITHOUT INCURRING ANY OBLIGATION WHATSOEVER TO INSTALL THE SAME OR IMPROVEMENT UPON PRODUCTS PREVIOUSLY MANUFACTURED. OCCASIONALLY DEPENDING ON AVAILABILITY, PARTS MAY BE SUBSTITUTED THAT WILL NOT EFFECT PRICE, PERFORMANCE, APPEARANCE OR QUALITY OF THE PRODUCT.