So my issues resides in a 70 Polara. It has a stock rebuild 440 running an AVS 4640SA carb that was rebuilt. Timing settings are 8 deg BTDC with an idle speed of 800-850 rpm pulling about 13 inHg at idle. I initially had the initial set at 12 BDTC but would ping at moderate to heavy acceleration so I backed it off to where it is now.
So my current issue is the idle speed increases once the engine has been run up for awhile. I noticed this last month when I took it for a drive an hour...
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So my current issue is the idle speed increases once the engine has been run up for awhile. I noticed this last month when I took it for a drive an hour...
Read more
