spark plugs on dart 270 1964

[macke]

HELLO
WHAT KIND OF SPARK PLUGS CAN I PUT ON MY DODGE DART 6 CYL 1964 170 CI.
I HAVE SOME BA D STARTING
WE HAVE CHANGE POINTS AND CONDENSER
WHAT MARK ON THE ENGINE CAN I TAKE TO MAKE A GOOD
TIMING . THERE IS 4 MARKS .
THANK YOU FOR ANSWERING.
REGARDS FROM FRANCE

[Sean C]

I would use the Champion RN12YC or it's equivalant.

Try to run your timing at 35 degrees BTDC total or roughly 5-10 BTDC on idle. Make sure you disconnect the vacuum advance to the distributor, before making adjustments.