Hey guys, So during my recent rewire I replaced my distributor with an HEI (stock cardone). Now when I plug the vacuum line up to the HEI's secondary it dies. I have a 250 motor from a 74 nova. Any ideas what my problem could be. need to have this thing out running during this beautiful weather.

Thanks in advance

Last edited by jtroberts; 06/02/2021 1:36 PM.
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'25 Chevy Superior
'66 Chevy C10
'03 Chevy Silverado 1500 HD