Does advancing timing raise idle?
Does advancing timing raise idle?
Our experience shows that connecting the vacuum advance to a manifold vacuum source will add timing at idle and improve idle quality in gear with an automatic transmission.
What should my SBC 350 idle at?
idle speed for chevy 350 [Archive] – Cobra Club Forums. around 7-800, any more and it can run on when you turn off the ignition. around 7-800, any more and it can run on when you turn off the ignition. Yes, mine runs better at 800rpm.
What should a SBC idle at?
Premium Member. That cam should idle good at less the 1000-1100 RPM.
Will advance timing cause backfire?
However, if the spark timing isn’t just right, the spark could fire too early before the intake valves are closed, or too late when the exhaust valves have already opened. When this happens, the air/fuel mixture in the exhaust or the intake can combust, leading to a backfire.
What rpm should my SBC be running at?
SBC’s normally run 32-34 degrees total Mechanical advance. Should be “all-in” by about 2,500-3,000 RPM’s. Disconnect and plug the vac. advance line, hook up a timing light and read the timing while you or a friend opens the throttle a little.
How to set initial timing on a small block Chevy SBC?
Setting initial timing on a small block Chevy (SBC) Once the distributor is re-installed and the rotor is pointing in the direction of cylinder one, you need to be sure that the rotor and the post are closely aligned as possible. That is, the rotor should be aimed directly at the post for cylinder one under the cap.
How do I know if my SBC is fully advanced?
SBC’s normally run 32-34 degrees total Mechanical advance. Should be “all-in” by about 2,500-3,000 RPM’s. Disconnect and plug the vac. advance line, hook up a timing light and read the timing while you or a friend opens the throttle a little. Check to see what your total timing is when it’s fully advanced.
How many degrees should the idle be at idle?
If it’s way higher than the 2,500-3,000 start trying lighter advance springs to get it down in that range. You will probably end up with 8-10 degrees at idle, but the important is not the idle timing…it’s the fully advanced total as well as the “advance curve”…ie: the rate that it will advance as RPM’s increase.
