what is the ignition timing for a 1988 Chevy 454 engine
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.
timing for the 454 engine is 10 degree's at TDC at 700 rpm in neutral or park
Between 8 and 12 degrees before TDC... My 454 is set at 10 degrees BTDC and it runs great.
What is the freon capcity 1992 454 pace arrow motorhome
4, to 6 degrees advanced or BTDC.
First of all, the size of the motorhome has absolutely nothing to do with how to repair the engine. Specify which make of engine it is, and you may get better results. Tgzzzz: I don't understand how someone could write the above incredibly ignorant comment. If you don't know what a 454 is, stop talking and start listening! Hi! I have a 1984 motorhome (31' ;-) with a Chevy P30-series chassis, 454 engine. The timing is on the air filter cover and is listed as 4 deg. BTDC. I tried looking this up online for myself--the Chevy-published info for this chassis & engine didn't indicate a timing, and directed me to look other than where the timing info _was_ located--and I haven't found it (and I've found a lot of red herrings). You might start w/4 deg., but perhaps a "history of the 454" would indicate model changes which might help with whether or not what I'm seeing would be of use to you.
6, to 8 degrees advanced, or BTDC., will work best.
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
More info needed but my first guess is the cat is bad. Drive it at night and look under it. If it is bad it will glow.
what are the factory timing specs for a 1977 chevy 454
Check if you have secondary timing marks installed. Mine are bolted to the oil pan and easily accessible from the bottom. Instead of using cyl #1 for setting the timing, you will have to use #5 or #8 (to make up for the 90 degrees offset to the factory timing marks