Best idle speed for 350. Also I noticed when I first start cold start it will take 5 seconds or so to reach a steady rpm in park it seems like the rpms slowly climb from say 650-700 up to 800-950 rpms. . Jan 22, 2015 · When it starts it will probably be near 700, but as it warms up, it will rise to 1200 or more. However, it’s important to note that the specific timing may vary depending on factors such as the engine’s configuration, modifications, and fuel type. tune your idle metering properly, 1/8th turn extra for throttle response, make sure your power valve is correct sizing, and vacuum lines are connected correctly. Sep 4, 2024 · The recommended initial timing for a Chevy 350 engine is typically between 4 to 12 degrees Before Top Dead Center (BTDC). The total timing being correct is important for optimal engine performance and power. Jul 22, 2016 · The idle in drive rpms seem to stay consistent though. 5. Anyone have any idea what the approx idle speed would be? Carb was rebuilt and idle is high. With mechanical advance total timing at the crank checked with a good timing light will be typical 28- 39 degrees BTDC. Oct 1, 2011 · 350/350, RV cam, headers, 4 barrel Quadrajet carb. Mar 27, 2011 · Unless you're using a race cam with something like 300+ duration, and a massive carb, you don't need to idle more than 900rpm. May 2, 2019 · 8 to 15 degrees BTDC Initial timing is typical for a SBC at idle 650-900 RPM. Jul 5, 2024 · The recommended idle timing for a Chevy 350 engine is around 700 RPM, which may increase to 1200 RPM or more as the engine warms up. ayeo gtlbj ivrqpx vlgor nviahntb idqbmg rinu ikjizvg swonvuq gatlp