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    Old 470 wont run over 2000 rpms when its in gear

    I have an older 1977 470. I bo I have an older 1977 470. I bought it with a bad lower unit. I found a pre-alpha 160 lower unit for it. I installed it with no problems. The boat runs great until I put it in the water and have it in gear under a load. Then It wont go over 2000 rpms. Ive checked...
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    Mercruiser 470 trim wont work

    "I have an older 470 mercruise "I have an older 470 mercruiser. I had the lower unit off for a fe weeks getting repaired. When I put everthing back together, the trim wont go up. When I hit the button to go down you can hear it run, and it is already all the way down.But when I try to raise it...
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    Cost of having a starter rebuilt for a 1977 470

    Does anyone have any idea apro Does anyone have any idea aprox. how much it should cost to have the starter of a 1977 3.7 470 cost?????
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    Installing pre alpa 470 outdrive question

    "I bout a used outdrive and I "I bout a used outdrive and I need to install it. Are there any tricks to it. Or do you just put in the input shaft, turn the prop to line the splines up until it goes into place. And tighten the 6 bolts. Do I need any type of alignment tool?? Also I bought the...
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    165 sterndrive seal leaking

    I bought a used outdrive of eb I bought a used outdrive of ebay. I did a pressure test before installing it and I relized there is a leak where the spline shaft comes out of the outdrive. Is this something I can repair myself? Or do I need to bring it in??
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    1974 165 outdrive What oil do they use

    "I think I am going to buy a 1 "I think I am going to buy a 1974 boat with a 165 in it. I am only buying the boat for parts. Basically the outdrive, and the trailer. I have a 3.7 470. 1977. And I believe this outdrive will bolt right on my boat. But I want to drain the oil from the outdrive...
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    Pre alpha outdrive compatability with alpha 1

    "I have a 1977 470 outdrive. W "I have a 1977 470 outdrive. Will the alpha 1 lower end bolt up to the upper half of a pre alpha outdrive? Also is there a trick to getting the lower half of the pre alpha lower end apart? I have a bearing out on the upper end, But I can not get the lower unit...
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    1977 mercruiser 470 outdrive compatability question

    My outdrive on my boat went. I My outdrive on my boat went. I found a small crack on the lower unit housing. After tearing it apart I found There is a bearing ou on the upper half and the lower end is shot. My question is This is of a 1977 3.7 470. I believe it is a pre alpa outdrive? I can get...
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    Mercruiser 470 outdrive problems

    "Ive been trying to get my boa "Ive been trying to get my boat up and running. I finnally got it running great. It was at aprox. 1300 rpm in nuetral, and I heard a clunk. The engine died. I restarted the engine ran it for 1 or 2 min tried putting it into forward and heard a load clunk, the...
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    1977 37 mercruiser not running

    "I recently bout a boat with t "I recently bout a boat with the 3.7 liter mercruiser. It needed the exhaust manifold gasket replaced. Wich was a nightmere, 3 of the bolts snaped and I had to re-tap them. After it was finished I took it out and it ran poorly under a load, but great ideling, and...
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    RPMS Running wide open

    "I Have a 1977 3.7 (470&#4 "I Have a 1977 3.7 (470),with a 19 pitch prop. Aprox. how many rpms should the motor be running when I am at full throttel????"
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    1977 37 470 engine running poorly under load

    "I Have a 3.7 mercruiser. I pu "I Have a 3.7 mercruiser. I put new plugs and plug wires on it and changed the oil to get it ready for spring. It runs great, but when you put it into gear you cant get over 2000 rpms and cant even get the boat up on plain. The prop is a little dinged up,but I...
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    Frozen heat exchanger on 37 470

    "I recently purchaced a boat w "I recently purchaced a boat with a mercruiser 470. After talking to people and asking around I was told that when done running the motor the water will run out of the outdrive. I have a exhaust manifold gasket that needs replacing, so when I was looking at the...
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    Mercruiser specs For a 1977 37 470 mercruiser

    I checked and the motor is a 3 I checked and the motor is a 3.7 (470).I also ordered a service manual. I was told this is a 120 hp engine. But after searching online I still cant find out the hp. and torch specs. Can anyone help? Thanks!!
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    1976 120 hp mercruiser 4cyl

    "I just purchaced a boat wit a "I just purchaced a boat wit a 120 hp mericruiser engine. The engine needs an exhaust manifold gasket. How hard is this to do? Also Im confussed. There is a coolant resivore on top of the maqnifold with antifreeze in it. But it also takes in water from the stern...
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