My car has the EGR version, #3156. I don't have a pic handy. I'm likely an outlier in the car hobby community in that I like to keep all the emissions equipment when possible.
As a result, I'm running fully function egr and cats on a '75 car. The dual cats are 200 cell metallics. In the brief time I tried running no cats, I realized I could not be in the garage with the running car and not have to wash my clothes to get rid of the smell.
The emissions equipment once saved my car. The car was running in the garage and all of a sudden, the idle speed went up? There is a switch that goes to manifold distributor vacuum on a hot engine to up fan speed. What had happened is that the thermostat failed closed (for the second time!!).
I've only deleted the EFE as it won't work with the aluminum heads and is not needed with the aluminum performer.
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