Description
KB Hypereutectic Pistons Set 10cc suit 331 Windsor Stroker Crank 3.250″ Stroke 5.400″ Rod. Available in 030 040 sizes. We ship STD unless specified at checkout.
Compression Ratio approx. 9.2:1 (with 64cc chambers).
KB Pistons’ hypereutectic 390 alloy pistons are engineered for high-performance applications, featuring precision CNC machining, accumulator grooves for improved ring seal, and diamond-finished skirts for reduced scuffing and durability under extreme conditions. Designed for marine, drag, circle track, and towing use, these pistons deliver strength, reliability, and performance.
Specifications:
- Piston Set: 8 x Piston & Pins
- Std Bore Size: 4.000″
- Size: 0.75mm / .030″
- Head Type: Dish Top with 2 Valve Reliefs (10.0cc)
- Con Rod Length: 5.400″
- Stroke: 3.250″
- Piston Type: Hypereutectic 390
- Comp Height: 1.170″
- Pin Size: .927″ x 2.160″
- Pin Type: Press & Full Floating
- Weight: 461/143 Grams
- Skirt Coating: No
- Piston to Bore: See Label on Box
- Top Ring Width: 1/16″
- 2nd Ring Width: 1/16″
- Oil Ring Width: 3/16″
- Ring Set: 43M5505 or 43M5523
Suits the following engines:
- Ford 289 Windsor 4730cc V8 OHV 16V Carb Lead
- Ford 302 Windsor 4944cc V8 OHV 16V Carb Lead
- Ford 5.0L Windsor EFI 302ci 4944cc V8 OHV 16V ULP
Manufacturer Part Number: 8KB355-030
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