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    Bellow Glue

    I need to replace my driveshaft bellow on my drive and was reading that you are suppose to use bellow glue when installing the bellow. After further reading I found that some people only use it as a precaution to make sure that the bellow doesn't come off when reinstalling the drive. While...
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    Inspecting TRS/TR outdrive

    Now that I finally got my boat (1977 ThunderBird F20-CL with a GM350 280TRS) running after the previous owner let it sit for the past 20 years I am going to be moving to the drive to inspect it and repair any parts and seals that need to be replaced. My question is what would be the best...
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    Serial Number clarification

    I was told a while ago that I have a TRS outdrive based off the pictures of the drive. But when I go to look up parts for it i get Mercruiser II TR setup. The serial number that is on the drive is 4545516 which falls in the II TR range while the TRS serial number range begins at 479**** and up...
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    Starter for 1977 280 TRS GM V8

    The original starter went out on my boat and took it to the local boat parts store and they sent it out to get a quote for a rebuild and they quoted me $260. I found some starters online for about $160 from Sierra and other aftermarket suppliers and they say that they are the replacement for the...
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    1977 Mecrusier GM V8 no spark

    I have 77 280 TRS with the GM V8 350 in it. The motor turns over but we are not getting any spark. We checked the ohms at the coil and they are in the range that they are suppose to be. The points seem to be good but can't check since we don't have the gap feeler at the moment. After checking...
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    1977 GM V8 280TRS what would you do?

    I have been working on trying to a 1977 Formula 20-cl running and water worthy. The boat has been sitting since '93 in a drydock. Water built up over the years and got to the bottom of the alternator. Drained out all the water and got some new oil/filters/spark plugs in. The starter worked after...
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    How to ID transmission in a 1977 GM V8 350 280TRS

    I have a 1977 Formula/Thunderbird 20-CL with a GM V8 350 280TRS. How do I ID what transmission it has coupled with it? I couldn't find any serial numbers around the transmission. Don't know if the serial numbers from the engine and drive will help but I'll post them up. Drive-4645516 Engine-4499399
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    Need some help rebuilding a trailer

    I recently received a 1977 Formula 20 foot boat with its trailer. The boat has been in dry dock since 93 and the trailer has been sitting outside in the dry dock storage. I got new tires/rims, lights and a winch for it so far but I'm stuck on the brake system. It currently has an atwood actuator...
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    Mercruiser Engine/Drive ID

    I recently got a 1977 Formula 20-cl with a mercruiser setup. I was only able to get a couple pictures and a couple serial numbers off the boat before my phone died. I was hoping if anyone could take a look at the pictures and serial numbers and give me an idea of what I have. I know it's a GM V8...
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    1977 Formula/Thunderbird 20-CL questions

    First post here so hopefully this is the right place. Little back story first. I recently inherited a 1977 Thunderbird/Formula 20-cl that has been in a dry dock with the last reg year of 1995... So it's been sitting there for a while. They didn't pull out the drain plug and the cover had a...
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