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  1. M

    5.7 Vortec with Edelbrock 1409 Carb Jetting

    Im just finishing up the re-power in my boat from a 4.3 to a 5.7. I have the Edelbrock 1409 carb with the stock jetting that comes with it for the 5.7 non vortec (removed the calibration kit for the 4.3) I did a plug read and they are looking very lean, still white. Im wondering if anyone on...
  2. M

    Merc 5.7 idles and then stalls

    Hello everyone, Im having a idleing issue with my boat. I have recently re-powered with a 5.7 vortec reman from atk. The issue I’m having is when the boat is cold it starts and idles for maybe 5 mins. Once warm it will run rough and stall. I turn the key off then back on, crank the motor...
  3. M

    Mercruiser 5.7 overheating at idle

    I have a 1994 stingray 719zp that originally came with the 4.3 mercruiser. I have re-powered this summer with the 5.7 vortec long block. Everything is new, water circ pump, impeller in stern drive, intake manifold, exhaust manifolds, risers, thermostat housing with 140f thermostat, sensors in...
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