S&S Cycle

ENGINE OVERVIEW S&S offers performance engines in a variety of displacements for 1936–’84 Harley-Davidson® OHV big twins, that provide a vintage vibe and modern muscle. These engines have a deceptively stock appearance, but feature larger displacement and updated internal components for improved performance and reliability. Engineering grade cast iron cylinders are protected with a durable powder coat finish. 1966–’84 BIG TWINS SH93 (93 CID) An excellent upgrade option to replace a worn out Harley-Davidson® shovelhead engine, or to power a retro custom. The SH93 provides a significant increase in power over stock 74”or 80”engines, and since it runs well on pump gas, it’s a great daily driver. Available with generator, alternator, or alt/gen crankcases. SH93H (93 CID HIGH COMPRESSION) The SH93H is a higher compression version of the SH93. It features dual plugged cylinder heads to control knock, and a more aggressive cam to take advantage of the higher compression. Alternator style crankcases only. Complete with S&S Super E Carb and ignition. SH103 (103 CID) The SH103 is the largest engine S&S offers for 1970–’84 chassis. This engine will require frame clearancing when installed in a stock chassis. Available with alternator style crankcases only. Complete with S&S Super E Carb and ignition. 1948–’65 BIG TWINS P74 (74 CID) The P74 engine is preferred by some riders as a replacement engine for bikes with stock drive train that may not be able to take the power of a larger engine. Timken® sprocket shaft bearing makes this engine more reliable. Available with generator style crankcases only. Complete with S&S Super E Carb and ignition. P93 (93 CID) An excellent upgrade option to replace a worn out Harley-Davidson® panhead engine, or to power a retro custom. The P93 provides a significant increase in power over stock 74” engines, and since it runs well on pump gas, it’s a great daily driver. Available with generator, alternator, or alt/gen crankcases. P93H (93 CID HIGH COMPRESSION) The P93H is a higher compression version of the P93. It features dual plugged cylinder heads to control knock, and a more aggressive cam to take advantage of the higher com- pression. Alternator/generator style crankcases only. Complete with S&S Super E Carb and ignition. P103 (103 CID) The P103 is the largest engine S&S offers for 1970–’84 chassis. This engine will require frame clearancing when installed in a stock chassis. Available with alternator style crank- cases only. Complete with S&S Super E Carb and ignition. Complete with S&S Super E Carb and ignition. 1936–’47 OHV BIG TWINS KN74 (74 CID) The KN74 is a stock displacement engine favored by riders replacing an engine in a chassis with stock drive train that may not handle the increased power of a larger engine. Timken® sprocket shaft bearing makes this engine more reliable. Available with generator style crankcases only. Complete with S&S Super E Carb and ignition. KN93 (93 CID) An excellent upgrade option to replace a worn out Harley-Davidson® knucklehead engine, or to power a retro custom. The KN93 provides a significant increase in power over stock 74”or 61”engines, and since it runs well on pump gas, it’s a great daily driver. Available with generator, alternator, or alt/gen crankcases.

120 S&S Vintage 1926–1999 Order 608-627-1497