Ford Performance Parts M-6303-C340 | Engine Crankshaft

Part Number
Crankshaft| Finished Forged

Fits: Ford Country Sedan, Ford Country Squire, Ford Custom, Ford Custom 500, Ford E-100 Econoline, Ford E-100 Econoline Club Wagon, Ford E-150 Econoline, Ford E-150 Econoline Club Wagon, Ford E-200 Econoline, Ford E-250 Econoline, Ford E-250 Econoline Club Wagon, Ford E-300 Econoline, Ford E-350 Econoline, Ford E-350 Econoline Club Wagon, Ford F-100, Ford F-150, Ford F-250, Ford F-350, Ford Fairlane, Ford Fairmont, Ford Falcon, Ford Galaxie 500, Ford Gran Torino, Ford Granada, Ford LTD, Ford LTD Crown Victoria, Ford LTD II, Ford Maverick, Ford Mustang, Ford Mustang II, Ford Ranch Wagon, Ford Thunderbird, Ford Torino, Lincoln Continental, Lincoln Mark VI, Lincoln Mark VII, Lincoln Town Car, Lincoln Versailles, Mercury Capri, Mercury Colony Park, Mercury Comet, Mercury Cougar, Mercury Cyclone, Mercury Grand Marquis, Mercury Marquis, Mercury Monarch, Mercury Montego, Mercury Zephyr

Special Price $708.69 Regular Price $745.99
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Fits 302 production and Ford Performance cylinder blocks. Stock 2.1232" rod journal diameters. Use with M-6200-D50 "Sportsman" rods (5.40" long) and 1.090" CD pistons in standard 302 block for 347 cu. in. Features: Lightening holes, Rounded CW leading edge, tapered trailing edge, Rod and main journals are nitrided and polished. Requires custom pistons, rods and balancing

BRAND: Ford Racing


  • Crankshaft
  • Crankshaft| Finished Forged|
  • Lightening Holes
  • Nitrided And Polished Journals
  • High Strength Forged Steel


Bob WeightN/A
Main DiameterOEM
Pin Diameter2.1
Rod LengthOEM
Stroke3.2 - 3.5

Finished Forged


  • 1969-1974 Ford E-200 Econoline
  • 1975-1975 Ford E-350 Econoline
  • 1987-1991 Ford LTD Crown Victoria
  • 1972-1978 Ford F-350
  • 1968-1969 Mercury Comet
  • 1977-1980 Lincoln Versailles
  • 1980-1980 Ford F-350
  • 1979-1983 Ford E-100 Econoline
  • 1969-1983 Ford F-100
  • 1991-1993 Mercury Cougar
  • 1968-1969 Mercury Cougar
  • 1971-1977 Ford Maverick
  • 1975-1975 Ford E-250 Econoline
  • 1977-1979 Ford LTD II
  • 1971-1972 Ford Country Sedan
  • 1978-1979 Mercury Zephyr
  • 1981-1990 Lincoln Town Car
  • 1987-1991 Ford Country Squire
  • 1987-1991 Mercury Colony Park
  • 1969-1974 Ford E-300 Econoline
  • 1977-1981 Ford Thunderbird
  • 1980-1980 Lincoln Continental
  • 1977-1978 Ford F-250
  • 1979-1996 Ford E-150 Econoline Club Wagon
  • 1968-1970 Mercury Cyclone
  • 1979-1991 Ford E-250 Econoline
  • 1979-1982 Ford E-350 Econoline
  • 1968-1970 Ford Fairlane
  • 1979-1979 Mercury Capri
  • 1977-1986 Ford LTD
  • 1979-1979 Ford Mustang
  • 1979-1980 Ford E-250 Econoline Club Wagon
  • 1979-1991 Mercury Grand Marquis
  • 1982-1986 Mercury Capri
  • 1975-1980 Mercury Monarch
  • 1971-1977 Mercury Comet
  • 1969-1975 Ford E-100 Econoline
  • 1982-1987 Lincoln Continental
  • 1978-1979 Ford Fairmont
  • 1968-1972 Ford LTD
  • 1968-1969 Ford Country Sedan
  • 1972-1974 Ford F-250
  • 1975-1975 Ford E-150 Econoline
  • 1977-1981 Mercury Cougar
  • 1980-1996 Ford F-250
  • 1968-1972 Ford Galaxie 500
  • 1983-1988 Mercury Cougar
  • 1968-1974 Ford Torino
  • 1991-1993 Ford Thunderbird
  • 1983-1988 Ford Thunderbird
  • 1979-1982 Mercury Marquis
  • 1972-1974 Ford Gran Torino
  • 1979-1983 Ford E-100 Econoline Club Wagon
  • 1980-1983 Lincoln Mark VI
  • 1968-1974 Mercury Montego
  • 1968-1972 Ford Country Squire
  • 1968-1972 Ford Custom 500
  • 1975-1978 Ford Mustang II
  • 1968-1972 Ford Ranch Wagon
  • 1982-1995 Ford Mustang
  • 1968-1972 Ford Custom
  • 1968-1973 Ford Mustang
  • 1968-1970 Ford Falcon
  • 1975-1996 Ford F-150
  • 1979-1980 Ford E-350 Econoline Club Wagon
  • 1975-1980 Ford Granada
  • 1984-1992 Lincoln Mark VII
  • 1979-1996 Ford E-150 Econoline
Customer Questions
Will an engine flush clean my pistons?
No, an engine flush is unlikely to clean the pistons.
How to replace engine pistons?
Replacing engine pistons involves removing the engine from the vehicle, disassembling it, removing the pistons, inspecting the engine components, installing the new pistons, reassembling the engine, and testing it. It's a complex process that should only be attempted by experienced mechanics.
When do engine pistons rings go bad?
Engine piston rings can go bad due to wear and tear, inadequate lubrication, overheating, manufacturing defects, or improper installation. Symptoms of failing piston rings include reduced engine power, increased oil consumption, and blue smoke from the exhaust. Regular maintenance and inspection can help identify potential issues.
Why do engine piston rings fail?
Engine piston rings can fail due to wear and tear, inadequate lubrication, overheating, manufacturing defects, or improper installation. Regular maintenance and inspection of the engine can help identify potential issues. Symptoms of failing piston rings include reduced engine power, increased oil consumption, and blue smoke from the exhaust.
Can you replace engine pistons rings without removing the engine?
Replacing engine piston rings without removing the engine is possible but not recommended due to the extensive disassembly required and the risk of damaging other engine components. A full rebuild or overhaul is generally more efficient and effective.
Are oil pump gears necessary?
Yes, oil pump gears are essential for maintaining proper engine lubrication in an internal combustion engine.
How do oil pumps work?
Oil pumps work by creating pressure to circulate engine oil throughout an internal combustion engine.
Where is the oil pump located?
The oil pump is typically located inside the engine's lower oil pan or sump.
Why do oil pump failures happen?
Oil pump failures can arise from wear, contamination, poor maintenance, and manufacturing defects, causing inadequate lubrication and potential engine damage.
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