276 flathead test drive big improvement.........but?
Shifts well through the 4 speed top loader and with the '40 steering box it's like night and day versus the '36 box. Was having ignition problems but advanced the distributor one tooth and that cleared up 90° of engine problems but still doesn't run as smooth as it should. The exhaust has a intermittent "snapping" sound at all engine speeds, plugs are clean, compression 130-142lbs. on all cylinders. The distributor is Mallory electronic with no vacuum advance and is showing 30° of dwell. Am only showing 5" of vacuum at idle & 18 1/2" when I goose it; has a L-100 cam. I found a very small piece of gasket material that is located between the carb. adapter ( spread bore to square) & carb. laying on top of block where intake mates to the block. This gasket material was located on the corner of the adapter & carb. where mounting bolt passes through.........could this be enough to cause a vacuum leak? Can't put a timing light on it, no degreed pulley. All things considered still somewhat pleased considering where I was.
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