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Hello ! I have a 1988 Rampage 24 Express with a GM 5.7 L and a Quadrajet 4 barrel. I recently replaced the thunderbolt IV ignition with a Sierra Marine Delco EST Distributor. Had a problem with the first 2 do to it cutting out between 2300-3000 rpm . This one ( the 3rd ) I can get it to power...
