Mark the TDC line on the harmonic balancer with whiteout or white chalk. Hook up the timing light to the #1 cylinder spark plug wire (closest to radiator on drivers side). Start engine and spin distributor until the mark moves to 8 degrees before TDC. This is the factory timing.
The base ignition timing for a 1974 Chevy 454 engine is between 8 and 12 degrees below top dead center. A timing light is needed to accurate set ignition timing.
How to set the timing mark on kia clarus
what are the factory timing specs for a 1977 chevy 454
The timing mark for the Mazda 626 is in front of the engine. The marks for it belt are on the belt itself. The time for this can be set with a timing gun. A mechanic can set this for you.
you can purchase an aftermarket timing tab which bolts to the timing cover.
what is the ignition timing for a 1988 Chevy 454 engine
Between 8 and 12 degrees before TDC... My 454 is set at 10 degrees BTDC and it runs great.
My Motorhome still has the tune-up specs. on the 454 air cleaner housing. It says to undo the vac. at the distribator and plug it. Make sure the engine is runing at 700 RPMs and set the timing at 4BTC.
timing for the 454 engine is 10 degree's at TDC at 700 rpm in neutral or park
8 btc , vac off distributor, in drive , prk brk. set.
A timing CHAIN
adjust the timing to the correct spot then make a mark on the distributer