To set the timing on a 1963 Cadillac 390 engine, you should aim for an initial timing of around 8 to 12 degrees before top dead center (BTDC). Use a timing light to check this while the engine is idling. Ensure the vacuum advance is disconnected during this process and reconnected afterward. Always refer to the specific service manual for your vehicle, as slight variations may exist based on different configurations or modifications.
1963
There were two engine options available, one was the 390 cubic inch, and the other was the 429 cubic inch.
1963 390 firing order should be 1-8-7-2-6-5-4-3. dwell 30 deg. timing 5 deg BTDC.
1963 tbird 390 cid = 5 qts
1-3-7-2-6-5-4-8
The only motor I've found was standard on all models in 1963 was a 325 horse power 390 cubic inch v-8.
The 1961 Cadillac had a 390 cubic inch engine. The firing order is 18436572 with the number one cylinder on the front of the drivers side.
15426378
Where is the number one cylinder located on a 390 engine 1966 and are they 1357 on one side and 2468 on the other? thanks
1-8-7-2-6-5-4-3 Front of engine driver's side 1-3-5-7 Passenger's side 2-4-6-8
All 61-65 Thunderbirds came with the 390 FE engine. No other engine available from the factory.
Use whatever the original cap was, probably 15 psi.