Quick Answer: What Should The Timing Be Set At On A 454?

How do you set the timing on a olds 455?

Step 1: Align the engine balancer mark with the “0” on timing tab @TDC on #1 cylinder on compression stroke.

Step 3: Start the engine, make sure balancer mark is still align with timing tab “0” with timing light.

Step 4: Set timing light advance to 32-34 and raise engine RPMs to 3000-3500..

How much horsepower does a 454 big block put out?

The 454 EFI version was rated from 230 hp (172 kW) to 255 hp (190 kW) and from 385 lb⋅ft (522 N⋅m) to 405 lb⋅ft (549 N⋅m) of torque.

What are the symptoms of a bad timing?

Symptoms Of A Failing Or Broken Timing BeltYou Hear Odd Noises Coming From The Engine. … Your Check Engine Light Is On And Flashing. … Your Car Starts Hard And Occasionally Misfires. … You Notice A Loss Of Power And Your Car Runs Or Idles More Roughly Than Normal.

How can I get more horsepower out of my 454?

How Do I Get More Power out of a Chevy 454?Improve the fuel and air intake system. The more fuel and air you are able to get into your Chevy big block engine, the more power it will be able to produce. … Replace the stock exhaust system with a high-flow system. … Replace the stock timing parts with ones tuned for racing. … Bolt on a supercharger.

What happens if you advance timing too much?

Advancing the timing means the plug fires earlier in the compression stroke (farther from TDC). Advance is required because the air/fuel mixture does not burn instantly. It takes time for the flame to ignite the all the mixture. However, if the timing is advanced too far, it will cause an Engine Knock.

What happens if ignition timing is too advanced?

If ignition timing is too far advanced, it will cause the fuel-and-air mixture to ignite too early in the combustion cycle. This can cause the amount of heat generated by the combustion process to increase and lead to overheating of the engine.

Does advancing timing raise idle?

If the base timing is retarded 5 degrees from spec the engine will become lazy, and harder to start. It will produce less power(torque) off idle and rev slower. Advance timing, and response increases, easier to start, more power(torque) off idle. … Some engines use the vacuum advance to advance timing at idle.

How do you set the timing on a vacuum advance?

How to Adjust Vacuum Advance TimingSet the mechanical timing of the engine. … Loosen the distributor hold-down bolt. … Turn the distributor and use the timing light to set the timing to the vehicle manufacturer’s specifications. … Remove the vacuum advance hose at the carburetor.More items…

How do you do ignition timing?

Connect a timing light to the engine and check the ignition timing. The initial timing should be 12°11°BTDC (Before Top Dead Center). If the ignition timing is not within specifications, loosen the distributor body installation bolt and adjust the ignition timing by turning the distributor.

How do you adjust the timing on a distributor by ear?

Timing by ear simply eliminates the sometimes tedious first step of getting the timing close. When I do mine, I set the idle to about 1500 rpm and rotate the distributor until I get maximum rpm. I then retard it slightly until I get a 100 rpm drop and then take it out for a test drive.

What happens when your timing is off?

If the timing is off, damage can occur. In some engines, called “interference engines,” the consequences can be especially bad. … You could end up having to have your engine rebuilt, or even replaced. If your cam timing is off, chances are you’ll know because your car will not be running well, if it’s running at all.

What should timing be set at on BBC?

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.

How do I know if my ignition timing is too advanced?

Symptoms of incorrect ignition timing are poor fuel economy, sluggish acceleration, hard starting, backfiring, or “pinging” or “spark knock”. Too little spark advance will cause low power, bad gas mileage, backfiring, and poor performance. Too much advance will cause hard starting and pre-ignition.

How do you set timing without a timing light?

to set your base timing without a light, you just turn the motor over in it’s normal direction of rotation until the mark lines up with where you want it.. loosen up the distributor and hook up a spare spark plug to the #1 plug wire.. turn the distributor until it sparks..

Will an engine run if timing is 180 degrees off?

If you are exactly 180 degrees out when the plug fires you will have open valves, which could get a bit messy as well as noisey since any unburnt fuel in the cylinder would get ignited. I can’t imagine it would even try to start since there is now way it would get any compression.

Which is better a 454 or a 350?

In a light to medium weight car, a 350 will probably offer you the happiest experience, especially in a daily driver role. In a truck, the 454 will probably feel better to your foot. In an all out performance car, the 454 will probably be more likable as long as the car is a straight line car (drag racing etc).

What is the best Chevy big block?

10 Most Powerful Production Chevy Big Block Motors454 LS5 390 hp. Chevrolet brought out the 454 Big Block just as the curtain was lowering on the Classic Muscle Car Era. … 427 L36 390 hp. … 427 L68 400 hp. … 427 L72 425 hp. … 396 L78 425 hp. … 427 L88 430+ hp. … 427 ZL1 430+ hp. … 427 L71 435 hp.More items…•

Where should I set the timing on my performance engine?

Most naturally aspirated engines like a total timing of 34 to 36 degrees BTDC, (Before Top Dead Center) AKA “Advance”. Nitrous and supercharged engines usually run less than that, unless you plan on blowing the heads off the engine or blowing holes through your pistons.

What should timing advance be at idle?

In addition, the WSM says spark advance should be between 6 to 18 degrees BTDC at idle.