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Chevy 454 Timing Instructions - It Still Runs
https://itstillruns.com/chevy-454-timing-instructions-7550522.html
The initial timing should be 4 degrees before top dead center (BTDC). If the mark is adjacent to a higher number BTDC, the distributor must be rotated clockwise to bring it down to 4 degrees. If the number is lower or after top dead center (ATDC), turn the distributor counterclockwise. Step 4 Turn the engine off.
454 ignition timing. - Chevy Message Forum - Restoration and …
https://chevytalk.org/fusionbb/showtopic.php?tid/111505/
The 454 has a ratio of 1.53:1 so I would expect the timing to be somewhere in between. Obviously there are all the other factors such as compression ratio, fuel quality, cam, combustion chamber design, etc., etc., etc., but I am talking …
454 Timing - Team Chevelle
https://www.chevelles.com/threads/454-timing.38644/
Take the total timing that you want - say 36*. Divide that number by 360 and multiply the result x 25.136 [the circumference of a 8" diam damper]. So for 36* total timing you would mark your damper at 2.51" ahead of the timing mark. Then rev the motor slowly until you have full mechanical advance.
454 Ignition Timing Question - Hot Rod Forum
https://www.hotrodders.com/threads/454-ignition-timing-question.99643/
When driving down the highway with a light engine load (high vacuum) the timing will be about 55 degrees (35 total + 20 vacuum). This will increase gas mileage! When the throttle is opened, the vacuum advance will drop out and give 35 degrees (total timing). Give it a try. Save L leejoy 72NOVA454 Joined Nov 21, 2004 922 Posts
454 initial timing? - Team Camaro Tech
https://www.camaros.net/threads/454-initial-timing.211824/
Then you need to figure out how much total timing your engine likes, there is no rule stating just how much total by cubic inches so this is where you need to do some testing. Set your total somewhere between 34 and 38 degs and go see if …
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