I generally like to stay as close to stock as possible, but I have an Edelbrock 1406 and a GM HEI purely for the performance and maintenance aspect. These two mods have made a massive difference... I won't go back to stock.
I'm not sure about HP changes... the HEI had more impact on HP than the carb did, in my case. Also, mines a 350 - not sure if the results would be different for a BB or not.
Good luck!
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Paul
72 Cheyenne Super Custom Camper
greenaz@hotmail.com
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