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    1987 5.7 omc exhaust manifold/risers

    i have a 87 omc with a chevy350. I am looking to replace the old log style exhaust manifold with new center rise ones. My question is has anyone done this before. I found a site http://www.michiganmotorz.com/generic-exhaust-manifold-package-years-p-249.html that has them but the problem is they...
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    Would this fit on my 5.7

    I have a 87 omc 5.7(gm350) does anyone know if these would fit on? http://www.ebay.com/itm/small-block-chevy-pontiac-283-305-327-350-400-sbc-v8-t3-twin-turbo-manifold-/380379114982?pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr&hash=item58905cade6
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    thru hull question

    Im trying to get all the parts together for a diy thru hull exhaust. I pretty much just want it going straight out the back. I have a 87 omc 5.7(gm350). I got a pair of 4" exhaust tips. over all length of tips are 10". 4" inside the flange and 6" outside the flange. I know my risers are 3 1/2"...
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    Winterizing Question(I DID READ THE WINTERIZE POST)

    I have a 87 omc 5.7(GM 350). I took the boat to a marine last year and had it winterized and when the boating season came around I hooked it up on muffs and I noticed my oil cooler was cracked and water was spraying everywhere. I plan on winterizing it myself this year. My question is what...
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    Need some help

    I have a 19ft. open bow with a 350 i/o. Im looking to make a new motor cover/sun deck with like a bench seat. Just like the pic in the link. http://upholsteryman.net/slide.php?ii=3&i=20. But i want it to be able to open up like this guy has. Check out this video to c what im talking about...
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    Prop Help

    Hey boaters dont know to much about props but i been doing some research on them tring to learn more. I have a 1987 19 ft open bow with a 5.7 omc with a 3 blade 15x17 michian prop. WOT and trim nice i can go about 28-30 mph @ 3000 rpms. I know the boat can go faster then that. My question is...
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    Spark Plug Not on

    I have a 87 omc 5.7l gm 350. launched the boat out on sunday and started to head up the river no more then ten mins. it seemed to lose power. not much just alittle where u could notice it. first i was just think a tune up but after i got home and did a look over i noticed one of my spark plug...
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    Help with outdrive issue

    I have a 87 5.7l omc with a cobra drive. I tried to get the boat out and it would not go in gear it just revs up when i try to put it in gear. Like its stick in neutral. I searched around and seen people with kinda the same problem and they are saying it might be a lower shift cable. Is there...
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    Shift cable help!!!

    OK I have a 87 reinell 192s with an 5.7 omc with a cobra outdrive. i just replaced the oil cooler. Not sure if its a 400 or 800 series outdrive . First time for this season I tried to get her(boat/motor) out on the water today and she gave me a couple of problems. 1st - she would not start...
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    HELP 1987 Mercruiser 5.7 leaking water

    I have a 1987 Mercruiser 5.7 i/o with a omc outdrive. Im new to boating and dont know to much about them yet. I bought it at the end of last summer and only had it out like 4 times before i had it winterized. I was getting it ready for this season. I hooked the hose up to flush it out and it...
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