JE Pistons Standard 23 Degree Domed Forged Piston Set - SB Chevy 440 C.I. - Bore" 4.185" - Stroke: 4.000" - Rod Length: 6.000" 31020 1976-1978 Chevrolet K5 Blazer

1976-1978 Chevrolet K5 Blazer

2001-2006 Chevrolet Silverado 1500 HD

500" Rectangular Port

The Top Gurney fits most Bell helmet models including the HP7

24" wide at the mounting points and 16" tall but may be trimmed to fit many applications

JE Pistons Standard 23 Degree Domed Forged Piston Set - SB Chevy 440 C.I. - Bore" 4.185" - Stroke: 4.000" - Rod Length: 6.000" 31020 1976-1978 Chevrolet K5 BlazerThese 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