Webb19 jan. 2024 · With 16 degrees of initial timing and a properly adjusted idle circuit in the Holley carburetor, the engine struggled to idle with the in-gear vacuum dropping to … Webb20 jan. 2013 · An alternative method of setting timing is using a vacuum gauge plugged into manifold vacuum. Set your idle as slow as you can get it to go. That improves this …
Secrets Of Camshaft Power - Car Craft Magazine - MotorTrend
Webb19 okt. 2024 · Dial-back timing lights offer a quick check of both initial and total mechanical advance. This light displays timing and engine rpm on the same screen. … Webbat idle, and timing changes as the rpm changes. Fact is, the timing spec at idle speed is provided as a simple way for most people to set the timing, and is not a good … physics mathematical
Blueprint Tuning the Pontiac V-8
Webb10 mars 2010 · Not sure what your HEI setup is, but I'd recommend spending a little time playing with the advance curve to limit the centrifugal advance to ~18-20 degrees and crank in the initial to 16-18. The added timing down low really helps the driveability and low end trq. B BillsCamino Premium Member Joined Feb 9, 2000 22,931 Posts #4 · Mar … Webb22 feb. 2013 · To start the engine with 14-22 degrees initial timing advance, the engine must have between 9:1 to 9.5:1 compression ratio. If the engine has 9.6:1 to 10:1 static compression ratio, 10-13 degrees initial advance would be correct. More initial advance with 9.6:1 to 10:1 SCR with a short (224 deg.) duration camshaft and the engine would … Webb23 aug. 2010 · You should have more than 15" of vacuum at idle. Plug all the vac ports to the dist., brake booster and trans. Hook up a vacuum gage to the bottom port of your carb and see what it is when the engine is idling. If it's still low, pull the carb and see if the gasket is bad or even missing. tools for pentesting