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  1. #1
    Registered
    My Boats:
    1979 Excalibur 24, Paramount 21, 13 boston whaler
    Join Date
    May 2006
    Location
    New Port Richey, FL
    Posts
    27

    1979 24 excalibur, 383 or 454?

    Recently bought a 79 24 excalibur with a stock 350 and volvo 280 w/ trim. Boat was a dog and ran out at 40mph. Drive was mounted really low. I am currently putting a new transom and engine bedders. I am going with a bravo 1 with a high x dimension. Just up in the air about a 383 natural, 383 with a blower, or 454. Any input would be appreciated.

  2. #2
    Registered TxHawk's Avatar
    Join Date
    Mar 2003
    Location
    Dallas, TX
    Posts
    2,456

    Re: 1979 24 excalibur, 383 or 454?

    I would go with the big block. You wont have to push it as hard to have the low end torque. Any pictures? How high are you going with the X.

  3. #3
    RLW
    RLW is offline
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    Oct 2000
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    Western New York
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    1,451

    Re: 1979 24 excalibur, 383 or 454?

    I am also curious on the X dimension. It might be in your best interest to contact Throttle Up or BBlades for a recommendation.

  4. #4
    Registered
    My Boats:
    1979 Excalibur 24, Paramount 21, 13 boston whaler
    Join Date
    May 2006
    Location
    New Port Richey, FL
    Posts
    27

    Re: 1979 24 excalibur, 383 or 454?

    Quote Originally Posted by ExcaliburHawk40
    I would go with the big block. You wont have to push it as hard to have the low end torque. Any pictures? How high are you going with the X.
    Thanks for the input! I'm thinking about putting the cavitation plate about 2" above the bottom. I will post some pics soon.

  5. #5
    Registered
    My Boats:
    1979 Excalibur 24, Paramount 21, 13 boston whaler
    Join Date
    May 2006
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    New Port Richey, FL
    Posts
    27

    Re: 1979 24 excalibur, 383 or 454?

    Quote Originally Posted by RLW
    I am also curious on the X dimension. It might be in your best interest to contact Throttle Up or BBlades for a recommendation.
    I'm thinking about putting the cavitation plate about 2" above the bottom

  6. #6
    Registered
    My Boats:
    04 donzi zrc,06 donzi zfo
    Join Date
    Jun 2005
    Location
    Annapolis Md
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    545

    Re: 1979 24 excalibur, 383 or 454?

    I set one up at 17 3/4 with bravo 1,We ran 454 aprox 450hp the boat ran 75-77 mph,the old volvo outdrives are reliable but slow lower unit not very streamline

  7. #7
    Registered
    My Boats:
    1980 Excalibur 24'
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    Nov 2005
    Location
    Richmond Va.
    Posts
    46

    Exclamation Re: 1979 24 excalibur, 383 or 454?

    Hello Excal 1979. I have a fully restored pristine 1980 24' with a 454/496==512 HP Dyno with a TRS. If done right this is more than enough for that hull. I have been riding and driving this hull since I was 16. I am now 48. This hull does not take well to trim and was never ment to go much over 70. With the 6.5' beam she starts to get alittle out of shape over 71 and is not safe at 75. It wasnt meant to be. But Excaliburhawk40 is right. She will be tremendous out of the hole and exciting mid-range and scoot to a smooth 65 allday long with a big block.. These numbers of 75 to 80 must be on conventional dip stick speedo's. I use a Nordskog GPS MPH set up and I am here to tell you, one must be on glass water and sitting low in the seat and have a very fine touch on the port tab to keep her from chine walking, starting to the left because of the engine torque once you get over 71.5 MPH. This is not just my set up. Don Able, Excalibur Marine's head foreman and build leader who also still visit's this site will atest to the limits of your hull. Go with the chevrolet. Also click on Excalibur Question's forum and click on the link Hawk40 put up and you get some history of your boat and pic's of mine. Let me know if you find it.

  8. #8
    Registered
    My Boats:
    1979 Excalibur 24, Paramount 21, 13 boston whaler
    Join Date
    May 2006
    Location
    New Port Richey, FL
    Posts
    27

    Re: 1979 24 excalibur, 383 or 454?

    Thank you for all the information. I think I decided to go with a moderate 454. I am just looking for a good cruising speed with a load and a decent top end.
    Quote Originally Posted by Mr. Excal
    Hello Excal 1979. I have a fully restored pristine 1980 24' with a 454/496==512 HP Dyno with a TRS. If done right this is more than enough for that hull. I have been riding and driving this hull since I was 16. I am now 48. This hull does not take well to trim and was never ment to go much over 70. With the 6.5' beam she starts to get alittle out of shape over 71 and is not safe at 75. It wasnt meant to be. But Excaliburhawk40 is right. She will be tremendous out of the hole and exciting mid-range and scoot to a smooth 65 allday long with a big block.. These numbers of 75 to 80 must be on conventional dip stick speedo's. I use a Nordskog GPS MPH set up and I am here to tell you, one must be on glass water and sitting low in the seat and have a very fine touch on the port tab to keep her from chine walking, starting to the left because of the engine torque once you get over 71.5 MPH. This is not just my set up. Don Able, Excalibur Marine's head foreman and build leader who also still visit's this site will atest to the limits of your hull. Go with the chevrolet. Also click on Excalibur Question's forum and click on the link Hawk40 put up and you get some history of your boat and pic's of mine. Let me know if you find it.

  9. #9
    Registered
    My Boats:
    1979 Excalibur 24, Paramount 21, 13 boston whaler
    Join Date
    May 2006
    Location
    New Port Richey, FL
    Posts
    27

    Re: 1979 24 excalibur, 383 or 454?

    I can't find where to look for those pics. Is it in the questions forum?
    Quote Originally Posted by Mr. Excal
    Hello Excal 1979. I have a fully restored pristine 1980 24' with a 454/496==512 HP Dyno with a TRS. If done right this is more than enough for that hull. I have been riding and driving this hull since I was 16. I am now 48. This hull does not take well to trim and was never ment to go much over 70. With the 6.5' beam she starts to get alittle out of shape over 71 and is not safe at 75. It wasnt meant to be. But Excaliburhawk40 is right. She will be tremendous out of the hole and exciting mid-range and scoot to a smooth 65 allday long with a big block.. These numbers of 75 to 80 must be on conventional dip stick speedo's. I use a Nordskog GPS MPH set up and I am here to tell you, one must be on glass water and sitting low in the seat and have a very fine touch on the port tab to keep her from chine walking, starting to the left because of the engine torque once you get over 71.5 MPH. This is not just my set up. Don Able, Excalibur Marine's head foreman and build leader who also still visit's this site will atest to the limits of your hull. Go with the chevrolet. Also click on Excalibur Question's forum and click on the link Hawk40 put up and you get some history of your boat and pic's of mine. Let me know if you find it.

  10. #10
    Registered
    My Boats:
    1980 Excalibur 24'
    Join Date
    Nov 2005
    Location
    Richmond Va.
    Posts
    46

    Exclamation Re: 1979 24 excalibur, 383 or 454?

    Yes it is in the question forum although I do not see it anymore. ask Excalibur hawk 40 for help. He knows how toget back to it.


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