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    1997 5.7L thunderbolt ignition. Slow crank

    Apparently he hasn't done anything to it. Not even removed the heads , so no head gasket change and it has 100,000 mi on it, sounds like he just took all of the accessories off , added that manifold, cleaned it up and painted it . But is now " going in a different direction " He wants $1,800 ...
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    1997 5.7L thunderbolt ignition. Slow crank

    Just found this on market place . Complete L31 5.7 vortec "low miles' , 906 heads, dual plane manifold , 880 block, full hydraulic roller camshaft, Has the pulley to the harmonic balancer on the floor along w a bunch of other crap lol. Machined for mechanical fuel pump but no hole for...
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    1997 5.7L thunderbolt ignition. Slow crank

    Okay thanks for all that info. I think I've got it narrowed down to The Marine long block I posted above that already has the intake and the carburetor upgrade and fuel pump I would just have to add my manifolds and risers . Obviously it will be my most expensive option but for my skill level it...
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    1997 5.7L thunderbolt ignition. Slow crank

    What's FEAD? I only found a couple under 100k and they want 1500+2k that's why I was going to go reman, And then migrate my Marine parts over to that engine. But now it looks like the intake manifold won't work, so I'd have to get one of those, I got those priced at 500 to $600 new. . Which...
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    1997 5.7L thunderbolt ignition. Slow crank

    Oh okay, I got you yeah mine had six bolts per side, so if I were to buy that motor my manifold would not work. I would have to buy a new manifold, but I could still use my carburetor if I bought that manifold pictured.. Then I would just have to add an electric fuel pump, I also came across...
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    1997 5.7L thunderbolt ignition. Slow crank

    I mean if it means taking it to a machine shop and having to have it machined, I'd rather just add the electric pump if it's not that big of a deal. I'm not hung up on themechanical fuel pump, I just wanted it to be compatible as possible with my old engine, So I can swap all my Marine parts...
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    1997 5.7L thunderbolt ignition. Slow crank

    Oh so my intake manifold will NOT work? A I I've read it would just trying to get the right answer. The reason I was asking about the manifold is my manifold has round ports for the carburetor to bolt on to, the other ones for vortec look completely different, They look rectangularly which I...
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    1997 5.7L thunderbolt ignition. Slow crank

    Also. I have a 2BBL carb, will this manifold bolt onto a vortec? And will I have to run a different fuel pump or will the mechanical fuel pump work with it? Or have to contact them?
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    1997 5.7L thunderbolt ignition. Slow crank

    Okay I'm going to get an engine ordered this week, think I'd rather just order a reman rather than have mine rebuilt just think it'll take too long. do I need to buy a four bolt or is 2 ok? And will the camshaft need changed? Or head gasket...
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    1997 5.7L thunderbolt ignition. Slow crank

    No nothing obvious from my view, but I'll look closer when I get the engine out for sure
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    1997 5.7L thunderbolt ignition. Slow crank

    Yeah I've thought about that, but I decided to go ahead with a repower rather than buy a new boat for cost reasons, the boat is not worth that much money. So I don't want to put a lot of money into it. Upgrading to a vortec might be feasible and probably my easiest upgrade, because it would...
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    1997 5.7L thunderbolt ignition. Slow crank

    Oh I thought I read on here the exhaust manifold from a non vortec won't bolt onto a vortec head? Does the vortec add HP?
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    1997 5.7L thunderbolt ignition. Slow crank

    I'm not finding anything local with under 150k. There's some across the country I requested quotes on , under 100k miles, only a few that don't want more than reman Also been searching a bunch of rebuilders for a reman. Alot of them had poor reviews, but a company called "powertrain products"...
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    1997 5.7L thunderbolt ignition. Slow crank

    I was thinking about going that route, to upgrade to that I would just need to change the manifolds? I would just need to know what all I would need to purchase to make the vortec work, because the boat may not be worth putting all that money into
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    1997 5.7L thunderbolt ignition. Slow crank

    Yeah, oh well I thought my boating days were over because I thought this was going to be out of my capability. And a marina wouldn't cost too much for the value of the boat to have a new engine put in. But thanks to you guys I'm confident that I can get this back on the water maybe even this...
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    1997 5.7L thunderbolt ignition. Slow crank

    Okay thx ! When I get it off I'll send you a picture, if it's catastrophic I guess it won't matter where the rods go I'll be putting a new engine in it lol
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