Automatic transmission - 10 degress BTDC
Manual transmission - 6 degrees BTDC
Ignition Timing degree B.T.D.C at idle speed 20 degree plus or minus 2 degree
Generally, 8 degrees before top dead center is typical of Chevrolet V8 engines for many years including your 1985 model.
18436572 same as all Chevy v-8s that is the firing order, not the ignition timing. timing varies between vehicles. a sticker under hood will give timing info, or a Haynes or Chilton service manual
You dont.
The 1985 Chevrolet El Camino ignition switch can be removed by loosening the retaining ring at the top of the switch. The switch will slide out. Remove the wiring harness from the back of the ignition switch.
At what degree do I set my timing for a 1985 GMC s15 pick-up truck?
12 degress after top dead center
Ignition timing is off.
1985 Chevrolet impala
It is 8-10 degree before top dead center with engine warmed to operating temp., RPM's at the proper range and the check engine connector jumped at TE1 and E1.
8 degrees BTDC ( or 10 degrees BTDC if high output engine )
The typical timing for a 1985 Chevy 454 is 8 degrees before top dead center. The vacuum line removed from the distributor and plugged. The engine warm and idling at 700 rpm.