Small block 5.0L 302 with 300HP crate engine with cast iron heads. The 302 300 HP engine combination can be custom designed to tailor to your specific needs. All engines can be custom painted to match your vehicle at your request. We can outfit your engine with the exclusive March Performance serpentine belt system.  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.

• Precision machined 302 roller block (painted color of choice)

• Cast iron precision ground micro polished crankshaft

• Tri metal Clevite 77 rod and main bearings

• I-Beam connecting rods with ARP hardened rod bolts

• New high performance heavy duty flat top pistons w/ a single valve relief

• Hand filed performance rings to match

• Three piece true double roller timing set

• Crane or Comp-Cams  hydraulic performance camshaft (w/ a good muscle car loopy idle)

• (16) high rev lifters (anti-pump up)

• Ford cast iron cylinder heads

• (16) chrome moly push rods

• (16) stamped steel rocker arms

• Melling high volume oil pump

• Melling oil pick up

• Chrome front sump oil pan, and dip stick (additional $150 for rear or double sump oil pans)

• New Aluminum timing cover with scale

• Engine will be assembled with all new bolts

• Edelbrock performer series intake manifold

• Chrome thermostat housing to match intake

• Edelbrock carburetor w/ electric choke

• 14" chrome air cleaner

• MSD Pro-billet distributor (Requires MSD 6AL ignition control)

• MSD blaster II coil and bracket

• (8) AC Delco spark plugs

• A set of custom fit Taylor 8mm ignition wires (color of choice black, Red, Blue, Yellow, Green, Orange  no extra charge)

• Hi-flow water pump

• Chrome valve covers with baffles

• Professional products performance balancer

• Fel-Pro performance gaskets

• Engines will come with flex plate (for auto trans) additional $200 for manual transmissions.

• As we assemble your engine we take several pictures throughout 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, carburetor adjusted for optimum performance.

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

All of our turn-key crate engines come with a 1 year warranty with unlimited mileage

March Alternator Serpentine Kit

Add $870 To Base Price

March Alt, & PS Serpentine Kit

Add $1,430 To Base Price

March Alt, PS, & AC Serpentine Kit

Add $1,870 To Base Price

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

300HP Short Block

300HP Long Block