S&S Cycle Performance Replacement Cylinder Head Kit for 1984-99 Big Twin Engines and Harley-Davidson Sportster Models - Manual (Page 2)

INTRODUCTION
S&S ® Stock replacement cylinder heads are designed to fit all Harley-Davidson ® Evolution ® big twin engines and Sportster ® models. The
exterior dimensions of these heads are similar to Harley-Davidson ® dimensions and require no additional clearancing when replacing
stock heads on engines installed in stock chassis. Customer will need to purchase proper installation kit.
NOTE: S&S cylinder heads are designed to work with all aftermarket roller rocker arm assemblies also.
The intake and exhaust ports are a cast to shape design that yields approximately 13% more flow than stock heads.
The valve train components are designed to improve flow and work with any present day fuel. Clearances are set for any S&S camshaft
with a lift of up to .630" without modification. If cams with lift of over .630" lift are to be used, head kits may be ordered with special
high lift, racing spring kits, allowing the use of cams of up to .660" lift.
KIT CONTENTS:
● One set of S&S Stock Replacement cylinder head assemblies complete with valves, valve springs, valve guide seals and
keepers installed.
● Installation instructions.
NOTE: Other S&S products such as adjustable chrome moly pushrods, cam, Hydraulic Lifter Limited Travel kit, and Super
carburetor which may enhance the operation of S&S Stock Replacement cylinder heads may be purchased separately.
INSTALLATION INSTRUCTIONS
Installation of an S&S Stock Replacement cylinder head kit is easy and can be performed by any Harley-Davidson repair shop equipped
to do engine overhauls. No special tools other than those used in normal overhaul repair work are required.
Read instructions thoroughly before starting work. When they are completely understood proceed with installation.
1. Remove Components and Inspect Parts
Follow procedures outlined in appropriate Harley-Davidson
® service manual to prepare motorcycle for top end service.
NOTE: Disconnect battery and drain all gasoline from gas tanks before doing any work.
Gasoline is extremely flammable and explosive under certain conditions and toxic when breathed. Do not smoke. Perform
installation in a well ventilated area away from open flames or sparks.
2
WARNING
S&S ® Performance Replacement Stock Cylinder Heads