JE Pistons Standard 23 Degree Domed Forged Piston Set - SB Chevy 400 - 4.125" Bore, 3.750" Stroke, 6.000" Rod Length, 12.8:1 Ratio, 3 cc Gaskets & Seals Deals 736 in Bore

736 in Bore

Variable Valve Timing

Lightweight anodized aluminum

Compatible with most O

1979-1984 Ford Mustang

JE Pistons Standard 23 Degree Domed Forged Piston Set - SB Chevy 400 - 4.125" Bore, 3.750" Stroke, 6.000" Rod Length, 12.8:1 Ratio, 3 cc Gaskets & Seals Deals 736 in BoreThese high compression pistons are compatible with most aftermarket 23 heads and are ideal for drag racing and circle track applications. Valve reliefs will accommodate oversized valves and long duration, tight lobe separation cams. Precision CNC ring grooves are designed for 1 16, 1 16, 3 16 rings. Will not fit Pro Topline or Brodix 11X cylinder heads. Includes: Pin #927 2750 15 51S (130g) Double Spiro locks #927 042 CS Contact reduction grooves