1975 Chevy Van Rough and missing after warm up

1975 CHEVROLET VAN
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NOMORE57
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Engine Performance problem
1975 Chevy Van V8 Two Wheel Drive Automatic

This is a 1 ton camper van with 350 and about 89,000 miles. Always ran like a top until now.
After starting up from cold, the engine will race for awhile, where upon I'll goose the throttle to get it to idle. Lately, after a minute or two, it'll start missing and eventually die. Kind of acts as if the choke was closed but that is not the case. Driving it around the block is a struggle
I've replaced the plugs, and made sure the timing and dwell were right on. I don't think it's a fuel issue because of how it runs at fast idle when cold. I was told that the ignition should be electronic, but it has points.
Any advice on where to go from here is much appreciated.
Mar 18, 2010 at 3:16 PM
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RASMATAZ
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Clean out the EGR and PCV valves, test the coil's primary and secondary winding resistances and check fuel pressure
Mar 19, 2010 at 4:54 AM