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How far advanced or retarded do you set the timing for a stock 1970 Chevy 350 with pertronix ignition?
Wiki User
∙ 18y ago
The basic timing should be 5 to 10 degrees BTC, NO VACUUM @ IDLE (600 RPM, not much higher or you'll be out of adjustment) I'm not familiar with your particular ignition but you can be sure that the timing MUST NOT be more than 36-38 BTC (no vacuum) @ any engine speed over 2600- 2800 RPM. if your'e running it on say 96 -98 Octane....other wise youv'e got to adjust it to run so that it doesn't ping under load or you'll damage the motor.If it pings under load, sounding like marbles rattling in a can you need to back down the timing. CHEERS, WG- Australia
Wiki User
∙ 18y ago
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What is the difference between advanced and retarded timing?
Advanced timing is when the spark plug fires AFTER Top Dead Center, retarded timing is when it fires BEFORE TDC.
Would advanced or retarded timing cause intake backfire?
yes, backfiring is always due to ignition or timing problems. Backfiring through the carb can be a symptom of a lean condition.
What are the benefits of running advanced timing or retarded timing?
You will get pinging if you advance it and you will loose gas mileage and power if you slow it.
What is advanced ignition timing?
Ignition Timing Advancers are mechanical 'bolt-on' pieces to advance the ignition timing of the engine to a specific degree of timing advance. The majority of its application for these parts are for motorcycles or on racing applications.
What does vtec stand for?
Variable Timing Electronic Control. Meaning the timing is advanced/retarded electronically by the computer when needed ie. you stomp on the gas pedal and the timing changes to compensate.
What causes a gasoline engine to diesel?
pree ignition timing is advanced
Why advance fire is important in four stroke petrol engine?
It isn't a necessity to have an advanced fire timing but it can help if you want to run engines at higher ends but you can suffer power at the lower ends. It's important to time your ignition between retard and advance, but it depends on the application you are running the engine on. Passenger cars should run a little retarded timing or at tdc (top dead center) because the engine can warm up a bit faster if the engine runs retarded. Older cars use something like a vacuum timing system so they can run retarded and the vacuum from the intake manifold can turn the ignition coil slightly advanced to have a better power curve. Motorcycles should run a bit advanced so they don't run lean at top ends. And since the engine is considered small, they have enough response time to allow advanced timing while having enough low end power.
What is the ignition timing on a 1976 ford 460 v 8?
I beleive the factory spec is 4-6 degrees retarded.
Can you use regular gas instead of premium in a Mercedes E350?
You can but your ignition timing and cam timing, if you have adjustable cams will be retarded to stop detonation. Fuel economy and performance will drop.
What is the ignition timing for a 1968 Chevy 396 big block?
6 degrees advanced, or BTDC.
What is the ignition timing for a 1986 Chevy 366 big block?
6 degrees advanced, or BTDC.
What is the ignition timing for a 1980 Chevy 454 big block?
4, to 6 degrees advanced or BTDC.
