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You are here: Home > Pistons > Probe Forged Pistons > PRS - Professional Race Series > Ford > Ford - FE Series > Flat Top
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390 FE Base Block 427 FE Base Block
428 FE Base Block

Flat top pistons in a Ford 390 t0 427 FE Series engine will generally provide compression ratios in the 10.5 to 13.5:1 range which makes them a good option for engines with aluminum heads and larger than stock camshafts. Valve reliefs are configured to work with most types of standard and aluminum cylinder heads and will normally fit camshafts to well over .600 valve lift.

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Probe Forged Pistons
Probe PRS Series - Ford 416FE - Flat Top - 1.665 C/H - 4.050 Base Bore - -4.0cc - OEM Head

P/N: 8005-1-14472
  • 1.665 Compression Height
  • 3.980 Stroke
  • 6.490 Rod Length
  • .975 Wrist Pin Diameter
  • 1.5 1.5 3.0 Rings
  • Nitrous - 300 H/P
  • Forced Induction - 15 lbs
Available Bores Sizes: 4.080, 4.090, 4.100
Price includes pistons, pins, locks and oil rail spacers (as required)
Probe Forged Pistons
Probe PRS Series - Ford 427FE - Flat Top - 1.775 C/H - 4.250 Base Bore - -4.0cc - OEM Head

P/N: 8007-1-10300
  • 1.775 Compression Height
  • 3.780 Stroke
  • 6.490 Rod Length
  • .975 Wrist Pin Diameter
  • 1/16 1/16 3/16 Rings
  • Nitrous - 300 H/P
  • Forced Induction - 15 lbs
Available Bores Sizes: 4.250, 4.270, 4.280
Price includes pistons, pins, locks and oil rail spacers (as required)
Probe Forged Pistons
Probe PRS Series - Ford 427FE - Flat Top - 1.775 C/H - 4.250 Base Bore - -4.0cc - OEM Head

P/N: 8007-1-10301
  • 1.775 Compression Height
  • 3.780 Stroke
  • 6.490 Rod Length
  • .990 Wrist Pin Diameter
  • 1/16 1/16 3/16 Rings
  • Nitrous - 300 H/P
  • Forced Induction - 15 lbs
Available Bores Sizes: 4.250, 4.270, 4.280
Price includes pistons, pins, locks and oil rail spacers (as required)
Probe Forged Pistons
Probe PRS Series - Ford 428FE - Flat Top - 1.665 C/H - 4.130 Base Bore - -4.0cc - OEM Head

P/N: 8006-1-14471
  • 1.665 Compression Height
  • 3.980 Stroke
  • 6.490 Rod Length
  • .975 Wrist Pin Diameter
  • 1/16 1/16 3/16 Rings
  • Nitrous - 300 H/P
  • Forced Induction - 15 lbs
Available Bores Sizes: 4.130, 4.150, 4.160, 4.170, 4.190
Price includes pistons, pins, locks and oil rail spacers (as required)
Probe Forged Pistons
Probe PRS Series - Ford 431FE - Flat Top - 1.390 C/H - 4.050 Base Bore - -4.0cc - OEM Head

P/N: 8005-1-14795
  • 1.390 Compression Height
  • 4.125 Stroke
  • 6.700 Rod Length
  • .990 Wrist Pin Diameter
  • 1.5 1.5 3.0 Rings
  • Nitrous - 300 H/P
  • Forced Induction - 15 lbs
Available Bores Sizes: 4.080, 4.090, 4.100
Price includes pistons, pins, locks and oil rail spacers (as required)
Probe Forged Pistons
Probe PRS Series - Ford 431FE - Flat Top - 1.765 C/H - 4.050 Base Bore - -4.0cc - OEM Head

P/N: 8005-1-14833
  • 1.765 Compression Height
  • 3.780 Stroke
  • 6.490 Rod Length
  • .975 Wrist Pin Diameter
  • 1.5 1.5 3.0 Rings
  • Nitrous - 300 H/P
  • Forced Induction - 15 lbs
Available Bores Sizes: 4.080, 4.090, 4.100
Price includes pistons, pins, locks and oil rail spacers (as required)
Probe Forged Pistons
Probe PRS Series - Ford 445FE - Flat Top - 1.330 C/H - 4.050 Base Bore - -4.0cc - OEM Head

P/N: 8005-1-14473
  • 1.330 Compression Height
  • 4.250 Stroke
  • 6.700 Rod Length
  • .990 Wrist Pin Diameter
  • 1.5 1.5 3.0 Rings
  • Nitrous - 300 H/P
  • Forced Induction - 15 lbs
Available Bores Sizes: 4.080, 4.090, 4.100
Price includes pistons, pins, locks and oil rail spacers (as required)
Probe Forged Pistons
Probe PRS Series - Ford 449FE - Flat Top - 1.390 C/H - 4.130 Base Bore - -4.0cc - OEM Head

P/N: 8006-1-14798
  • 1.390 Compression Height
  • 4.125 Stroke
  • 6.700 Rod Length
  • .990 Wrist Pin Diameter
  • 1/16 1/16 3/16 Rings
  • Nitrous - 300 H/P
  • Forced Induction - 15 lbs
Available Bores Sizes: 4.130, 4.150, 4.160, 4.170, 4.190
Price includes pistons, pins, locks and oil rail spacers (as required)
Probe Forged Pistons
Probe PRS Series - Ford 452FE - Flat Top - 1.675 C/H - 4.250 Base Bore - -4.0cc - OEM Head

P/N: 8007-1-10302
  • 1.675 Compression Height
  • 3.980 Stroke
  • 6.490 Rod Length
  • .975 Wrist Pin Diameter
  • 1/16 1/16 3/16 Rings
  • Nitrous - 300 H/P
  • Forced Induction - 15 lbs
Available Bores Sizes: 4.250, 4.270, 4.280
Price includes pistons, pins, locks and oil rail spacers (as required)
Probe Forged Pistons
Probe PRS Series - Ford 452FE - Flat Top - 1.675 C/H - 4.250 Base Bore - -4.0cc - OEM Head

P/N: 8007-1-10303
  • 1.675 Compression Height
  • 3.980 Stroke
  • 6.490 Rod Length
  • .990 Wrist Pin Diameter
  • 1/16 1/16 3/16 Rings
  • Nitrous - 300 H/P
  • Forced Induction - 15 lbs
Available Bores Sizes: 4.250, 4.270, 4.280
Price includes pistons, pins, locks and oil rail spacers (as required)