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    Terribly stoopid question

    Unfortunately, the distributors were removed prior to my purchasing it.
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    Terribly stoopid question

    Its a 1968 Donzi 28 454 7.4L I have the tags on the motors that shows that they are standard and reverse rotation. The motors are not original to the boat. They are 1986 engines. Mine is not the one pictured, but I wish
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    Terribly stoopid question

    So I am now at the point where I need to install twin engines in the Donzi. The engines have been out for over a year now, and I am super embarrassed to even ask this question. Now that they have been rebuilt and look identical, I have a standard rotation and a reverse rotation. Does the...
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    7.4 Exhaust Manifolds help please

    Thank you very much. I think the Barr manifolds are approx 1" wider than the PCMs. I don't think I have 2"s of room
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    Sportsman 28 HIN

    Yes you are correct. My mistake. That is what I meant and what I am looking for
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    Sportsman 28 HIN

    I know this is going to be a tough one to answer, but was hoping for some ideas on where to find my HIN I purchased a 64-68 Sportsman 28. The boat has been re-stamped and the title says 1982 because thats the year of the engines after repower. I have had a few different classic models...
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    7.4 Exhaust Manifolds help please

    Hi all. Having to squeeze a pair of 454s into an engine bay. The manifolds on them were PCM cast irons and they were totally shot when removed. They since do not make those manifolds anymore. I am looking for 2 sets of narrow manifolds that fit BBCs. Does anyone know of a company that makes...
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    454 Piston problem

    What about replacing the wrist pin with one that is a little heavier to get closer to the other piston weights?
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    454 Piston problem

    Really? 29 grams off seems like a lot. I am new to the whole piston weights, so I am relying on you professionals
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    454 Piston problem

    The piston that I removed has a weight of 889 grams. The one I bought that had a cross reference number to the one I pulled weighs 877 grams.
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    454 Piston problem

    I inserted a ring and leveled it with the piston head and took 3 readings. Top, mid, lower. All were identical. I could get a .020 feeler gauge in but met with decent resistance.
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    454 Piston problem

    So, it is a Gen IV 1986 Low hrs Cylinders have been honed. Block is in good shape Just looking for a piston or a possible solution to my broken piston skirt problem
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    454 Piston problem

    correct, but I have to replace 1 piston that I damaged. Or possibly all 8 if need be. I have the correct rebuild kits for the engines
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    454 Piston problem

    Hello all. I have twin 454s that I am tearing down and putting back together with new rings, oil pump, gaskets, etc... Heres my problem. I ended up breaking a piston skirt on 1 piston. I cannot find a replacement piston. My part number is 353062. Its a std 4.25 Anyone know where I can find...
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    Exhaust Manifold question

    Thank you for that input. The boat sunk but was only down 2 days. It sunk because the person that tied up the boat in the harbor tied it to a beam instead of the floating dock. Tide went down and the boat stayed down
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    Exhaust Manifold question

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    Exhaust Manifold question

    Nice having friends with a crane
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    Exhaust Manifold question

    I do agree about the weight probably will not change performance. I just know that getting those cast iron manifolds off were a nightmare and extremely heavy. What was in there were some PCM manifolds. Held in by bolts and the heads of those bolts were rounded off. It was a fun time getting...
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    Exhaust Manifold question

    This will be in Lake Tahoe, so it would be as fresh as it gets
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    Exhaust Manifold question

    Hi all, I sincerely hope I am in the correct place. If not, I apologize. So, I have a Classic Donzi with twin screws. The 454s fit very close to each other on the inner mounting. The exhaust manifolds are basically garbage and I want to replace. Because they re so close, I will most likely...
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