Key Specs

MFG. Part #
BrandSpeedway Motors

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Cast aluminum 3.75" bore piston set for 1955-1959 Ford 292 Y-Blocks. Specify .030", .040" or .060" oversize.

  • Cast from high silicon A-332 aluminum alloy
  • Machined on modern CNC machinery
  • Precision balanced & weight-matched sets
  • Balanced to within 8 grams from the lightest to the heaviest piston

Rings sold separately, see part # 910-568.

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.


MFG. Part #
BrandSpeedway Motors
Piston StyleFlat Top
Piston MaterialCast Aluminum
Piston Diameter
Wrist Pin Diameter0.9120"
Sold in QuantitySet