4150 Holley swap for 1409 Edelbrock on 454 PCM
http://i1189.photobucket.com/albums/...ps1q65xrqk.jpg
That's a 650 cfm edlebrock marine carb , bolted up and adjusted the idle and that was it . Make sure your CFM is correct , to big of a carb the engine will load up . Too less it will run too lean . Both would cause your issues . But please don't run auto carb on inboard with closed hood . Jet boats and open engine bay style boat would be ok but your asking to seriously hurt yourself or someone else with those vapors . Do you have auto plug wires ? If you do start it at night and watch the fireworks against your block and other grounds . May not happen now but why take the risk .
My two cents .
Happy boating
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4150 Holley swap for 1409 Edelbrock on 454 PCM
You needed a 650 for the 454 , not enough fuel , I broke my hard line from pump to carb . Although once I get a flaring tool I'll go get some brake line and bend it and make a new one . The edlebrock works great with my setup . And I just got tired of messing with my holley and keeping it from leaking from secondaries . But I later found a cracked booster so replacing was a good choice . Good luck
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