4 to 8 degrees BTDC/ before top dead center. light duty 454 is 4 degrees BTDC
Heavy duty 454 is 8 degrees BTDC.
what are the factory timing specs for a 1977 chevy 454
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.
Which 454? The LS5 and LS6 are two VERY different engines even though they are both 454's. Timing specs are different as well. 8 degrees before TDC at idle will work for either, but may not be optimal.
what is the ignition timing for a 1988 Chevy 454 engine
9 to 13 LBS ( PSI ) is factory specs.
timing for the 454 engine is 10 degree's at TDC at 700 rpm in neutral or park
A timing CHAIN
the timing specs are 17 to 18 degrees btdc.
the 7.4 vortec 454 has 290 horsepower and 410 ft lb or torque
timing specs 96 5.8 engine
the engine's timing is computer controlled. What timing specs are you looking for. What engine is it? 2.0l VVT engine?
what do you mean timing specs. your question is a little vague. are you talking about cam specs or ignition timing. the cam you line up the marks on the gear to the head and the ignition timing is about 15 degrees before top dead center