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
