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Thread: 502ci 525HP with Carb and Ign

  1. #1
    Registered TxHawk's Avatar
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    502ci 525HP with Carb and Ign

    502ci 525HP
    Started life as a 502/502 but has been run marine since new. I acquired and rebuilt early this year. Rebuilt by Keith Scroggins in OKC (known marine builder)
    New bearings, rings, oil pump, timing set.
    Heads were rebuilt with all new valves (stainless/inconel), valve springs and comp 1.7 RA's.
    Cam is very close to a 525EFI cam in an Isky grind on 114lsa.
    GM Perf Heads and Intake
    I have a Victor Jr. Single plane I will include in sale
    Carb is QF Marine 850
    Ignition is Thunderbolt with HP module

    I have run it for no more than 15 hours this season while I worked on the setup on my build. It pushed my 27 Excalibur to 80mph, so it is making some decent power. I can send a video of the last trip out in the boat.

    I'd prefer to sell with Carb and Ignition as I plan to reuse everything else.

    Stainless Marine Manifolds and Straight Dry Tails could be included for additional money.

    $7,500



  2. #2
    Registered TxHawk's Avatar
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    Last time this engine was run. If you're in need, I'll negotiate various options for the accessories.


    Last edited by TxHawk; 12-10-2016 at 08:26 AM.
    spongy62 likes this.

  3. #3
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    That's a great deal!

  4. #4
    Registered TxHawk's Avatar
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    Bump, spring is around the corner!

  5. #5
    Registered TxHawk's Avatar
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    New motor is together, I am about to start robbing the accessories from this one.

    I am offering it from the air cleaner to the pan to include Thunderbolt ignition. Ill throw in the crossover too!

  6. #6
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    What would be needed for complete swap?

  7. #7
    Registered TxHawk's Avatar
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    Sent PM with contact info.

  8. #8
    Registered TxHawk's Avatar
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    Stripped and ready to go. Various accessories negotiable.

  9. #9
    Platinum Member Platinum Member 28cigarettess's Avatar
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    What is the new motor. Did you build one of the ones you got from me?

  10. #10
    Registered TxHawk's Avatar
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    Quote Originally Posted by 28cigarettess View Post
    What is the new motor. Did you build one of the ones you got from me?
    I had another 502 block. Built a 540 with it.


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