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Cadillac Engines Quick Reference

Cadillac supplied three engines for our cars during the 1979 to 1985 period: The 368 cu.in. V8 from earlier years, the new 368 cu.in. variable displacement V8, and the new HT_4100 V*.

Maintenance Items

Engine Type VIN Comp PSI Oil Cap# Coolant S plug/Gap* Air Filt* Oil Filt* Fuel Filt*
368ci V8 Y 100min 20% var 4+1 qts 16 qts RS-46SZ/.060 A329C
368ci var.displ. V8 9 Carb 4+1 qts 16 qts RS-46SZ/.060 A329C
HT-4100 V8 R Carb 4+1 qts 16 qts RS-46SZ/.060 A329C
# +1 = with filter change * A.C. Delco or equivalent