Speed Pro TRW Ford Mercury 428 Super & Cobra Jet Forged Coated Skirt Piston Set/8 10.3:1 +.060
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Speed Pro TRW Ford Mercury 428 Super & Cobra Jet Forged Coated Skirt Piston Set/8 10.3:1 +.060
Speed Pro/TRW Ford 428 Super Cobra Jet Forged Coated Skirt Pistons set of 8 in +.060" Over Bore or 4.190" Bore. Pistons only, Rings not included. Bore: 4.190" (at +.060"); Comp Distance: 1.674"; Head Style: Recessed head .085" deep x 2.620" diameter with 4-valve reliefs; Dome Volume:-10.3cc. Pin Size: .975" (included); Floating or press-fit; For stock 3.980" stroke crankshaft and stock length connecting rods. Appx Compression Ratio (w/+.030" bore): w/68.0cc chambers 10.66:1; w/71.0cc 10.35:1, w/74.0cc 10.07:1; DurOshield Coated Skirts. 1969-70 Car Cobra Jet& Super Cobra JetUse in sets only