1985-1995 Polaris Snowmobiles Master Repair Manual, Page 279Get this manual
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ENGINES Engine Specifications 1989 Models
CylHead CC's Uninstalled
26.5 21.0 21 .0 22.6 26.6 31 .2 19.5
CylHead CC's Installed
23.7 17.2 17.2 21 .8 24.0 28.6 20.7