[Question] 454 GM block and Heads
+ Reply to Thread
Results 1 to 6 of 6

Thread:
454 GM block and Heads

  1. #1
    Member
    Join Date
    Nov 2008
    Posts
    49

    Default 454 GM block and Heads

    I have a GM Marine Power 7.4/454HO motor and was needing some info on the block and heads.
    2 bolt or 4
    Pistons ?
    Cam ?
    GM Block part # 12568777
    date 02-2001
    Serial #07075

    Head casting #12562934
    I think the heads are open chamber 502 marine, would like to know valve size, cc of heads(118cc).

  2. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  3. #2
    Led
    Led is offline
    Senior Member Led's Avatar
    Join Date
    Jul 2010
    Posts
    1,493

    Default

    i could find info on the block,
    google it

  4. #3
    Some guy obnoxious001's Avatar
    Join Date
    Dec 2007
    Posts
    3,571

    Default

    The casting number is usually easier to find information with, as opposed to the part number,, not sure if you missed a digit or what, wouldn't come up for me. A 2001 block should end up being a 4 bolt Gen 6 block.

  5. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  6. #4
    Led
    Led is offline
    Senior Member Led's Avatar
    Join Date
    Jul 2010
    Posts
    1,493

    Default

    the casting number is close but not showing in the lists i looked at, i am leaning the same, 01 Gen 6

  7. #5
    "BEER BUDGET RACING" Bodean's Hammer's Avatar
    Join Date
    Jun 2008
    Location
    Okmulgee, Oklahoma, United States
    Posts
    3,621

    Default

    mine was a 97 7.4 in my baja. 4 bolt main, hyd roller. I think 330hp- gen 6 block

  8. #6
    Member
    Join Date
    Nov 2008
    Posts
    49

    Default

    Thanks for the info!

+ Reply to Thread

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Please select your insurance company (Optional)

Log-in

Tags for this Thread

Digg This Thread

Posting Permissions

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
  •  
 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95