SCREAMIN'
EAGLE EVOLUTION 1340 CYLINDER HEADS* Built right at the factory
for unparalleled quality. The re-designed combustion chamber,
optimized for flow and efficiency, works with stock or Hi-Compression
Forged Piston Kits. Heads come up with larger than stock
1.898" intake valves and 1.623" exhaust valves. Valve
Spring Kit P/N 18223-98 is used and can accommodate .520" valve
lift. At 72cc, this equates to a 9.5:1 compression ratio with
stock pistons. Use of Screamin' Eagle Spark Plugs P/N 32320-91
when flat-top pistons are used or P/N 32321-91 with high compression
pistons is recommended. 50-state legal for '93-'99 models when
used with Original Equipment pistons, air cleaner, cam, exhaust, and
ignition. '84-'92 models require Threaded Cylinder Head Inserts
P/N 29304-92. Fits '84-later carbureted Evolution 1340-equipped
models. May also be used on '84-later EFI Evolution
1340-equipped models in conjunction with an approved ECM
calibration.
See your dealer for details.
Harley Davidson
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