O TDC, Top dead center
0 degrees TDC.
Use a timing light with vacuum advance disconnected set base timing to 6 degrees
what is the timing specifications for 1985 Chevy with a 5.7 liter 350?
You need a timing light to set the correct timing. Once the truck has been set at base timing at 0-2 degrees by disconnecting the timing wire and setting the dist., the computer adjusts the timing by itself to the proper setting.. There is not an adjustment for the the idle speed on this truck.
0 top dead center.
advance your timing 6 degrees due to this ethanol crap fuel we run now
set timing on 1991 c2500 5.7 liter
It has a Timing Chain.
Chain
You need to disconnect the timing plug for the computer, then time it to zero degrees. Once you plug the timing plug back in, the computer will self time the motor from there.
The 1.6 liter four cylinder has a timing BELT and the 2.0 liter four cylinder has a timing CHAIN
The 4.3 liter V6 engine in a 1997 Chevy Blazer has a timing CHAIN