The S&S T143 long block is a 143 cubic inch Twin Cam crate motor that fits a stock '99-'17 chassis with no cutting or frame modification. No Shipping to California. Engines do not ship for free. Please call or fill out a contact form for a shipping quote. 143 cubic inches is the top of the T series, and S&S makes roughly double the horsepower of a stock motor without asking you to modify the frame. That combination is the whole appeal: the output of a purpose built race motor inside a chassis that still looks and mounts like the one that left the factory. Inside the T143 Long Block Engine S&S B3 cylinder heads are CNC machined and use two bolt exhaust flanges. Underneath them sit Super Stock T2 crankcases with a reed breather valve and three piece flywheels. A TC3 oil pump and cam plate keep oil moving where it belongs, and 635 easy start gear drive cams pair with 1.725:1 rocker arms for .674" of total lift. Compression comes in at 10.5:1. Oil line routing was revised for '99-'07 applications, which removes the need for an additional kit on those bikes. Designed and manufactured in the USA. T143 Long Block Specifications 143 cubic inch displacement Bore x stroke: 4.425" x 4 5/8" Compression ratio 10.5:1 S&S B3 CNC machined cylinder heads with two bolt exhaust flanges S&S Super Stock T2 crankcases, reed breather valve, three piece flywheels S&S TC3 oil pump and cam plate 635 easy start gear drive cams, 1.725:1 rocker arms, .674" total lift Fits stock chassis with no frame modification Fitments: '07-'16 Touring except Twin Cooled, '06-'17 Dyna, '99-'06 Touring and '99-'05 Dyna What Else You Need With the T143 Top motor mounts are required on '08-'16 Touring models: T143 top engine mount bracket. An oil line installation kit is required for '07-'16 Twin Cam engines: oil line kit. A T143 specific or custom exhaust is required. The motor does not include a carburetor, intake or ignition system; those come from the Tuners and Fuel Systems section. The '07-'16 engines are not recommended for Trike models. Professional installation and tuning are strongly advised on a motor at this output level.
