Chevy 350 with 475 HP full roller dual quad  turn-key crate engine.  This engine can be custom designed to tailor to your specific needs. We can also custom paint your engine to match your vehicle at your request. Check out the quality of parts listed below. We are a dealer for March Performance serpentine belt systems if you choose them as your pulley manufacture.  We can also assist you in choosing the proper transmission and stall speed converter combination for your vehicle and have it shipped directly to you as your performance crate engine is being built.

350 440HP Dual Quad Engine Live Run 

Check Out What Our Customers Think Of Our Engines

• 4 bolt main block two piece rear seal

• Cast steel Scat crankshaft assembled with tri metal Clevite 77 rod and main bearings

• Scat I-beam bushed connecting rods with ARP rod bolts (rated for over 500hp)

• Speed-Pro high performance pistons with coated skirts

• Hand filed performance rings

• Three piece true double roller timing set

• Comp Cams Hydraulic Roller High Performance Street Camshaft With A Muscle Car Chop

• (16) New roller lifters

• Dart Pro One performance aluminum cylinder heads 64cc with 200cc intake runners

• (8) Stainless steel 2.02 intake valves

• (8) Stainless steel 1.60 exhaust valves

• (16) High performance valve springs and retainers (to match camshaft)

• 7/16 screw in studs and hardened guide plates 

• (16) Chrome Moly push rods

• (16) Performance true aluminum roller rockers

• Engine will be assembled with all new bolts

• High volume oil pump and screen

• Chrome oil pan

• Chrome dip stick and tube

• Chrome timing cover

• Professional products performance balancer

• Fel-Pro performance gaskets

• The complete rotating assembly will be balanced

• Edelbrock RPM Air Gap Dual Quad intake manifold with EnduraShine Finish

• Dual Edelbrock carburetors with EnduraShine Finish

• Edelbrock Dual Carburetor Fuel Feed Line

• Edelbrock Dual Carburetor Linkage

• Chrome thermostat housing

• Edelbrock EnduraShine Finish Dual Carburetor Air Cleaner

• MSD Pro Billet Distributor

• MSD 6AL Dual Spark Ignition Control Box

• MSD Blaster II coil and bracket

• (8) Autolite spark plugs

• Custom fit Taylor 8mm ignition wires (color of choice black, red, blue, yellow, green, orange no extra charge) 

• High flow cast iron water pump

• Chrome valve covers

• Chrome breather

• Complete PCV ventilation system

• All engines will come with starter and flex plate (for auto trans), additional $200 for manual transmissions.

• Engines are photo documented during the building process so you can see the quality of parts and workmanship that goes into your engine.

• Each engine is live run tested, timing set, and carburetor adjusted for optimum performance

• We video tape your live run engine, and send you a copy

All of our turnkey engines come with a 1 year warranty with unlimited mileage

Whether your vehicle is a hot rod, street car, race car, or even a tow truck, here at Pro-formance Unlimited we are here to help design and build the combination that best suits your vehicles needs. Please browse our 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.

All engines are custom built to order for total customer satisfaction

All major credit cards accepted

Call us today for a quote

1-800-267-3940