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.
what are the factory timing specs for a 1977 chevy 454
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
The correct timing for a Chevrolet 454 engine made in 1984 is 4 degrees before top dead center with the idle speed set at 600 Rpm's, the distributor vacuum hose disconnected and plugged, and all accessories like the A/C turned off.
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were dos the dots need to be on the timing chain together or apart
Yes.