V80 Long-Block EngineStock-height basic engine is direct bolt in replacement for aging 80" H-D Evolution engines Does not include carb or ignition; use stock or aftermarket carburetor and air cleaner 508 cam Forged rocker arms 585 valve springs Flat top cast pistons S&S standard oil pump S&S performance replacement heads 3-1/2" bore x 4-1/4" stroke 8.4:1 compression ratio Wrinkle black finish Fits 1984-1999 Harley Davidson® big twin chassis and custom frames designed for Evolution® big twin engines