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Thread: L 19 rod bolt torque spec?

  1. #1
    Senior Member MASTER BUILDER
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    L 19 rod bolt torque spec?

    What is the torque spec for a L19 rod bolt? h beam rod 7/16 with arp lube
    in a bbc motor.
    Go Fast_Have fun

    Greg Farmer

  2. #2
    Senior Member RACING JUNKIE
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    I think it's 72 ft-lbs but dont qoute me.
    ***IN GOD WE TRUST***

  3. #3
    Senior Member RACING JUNKIE
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    Post updated see below.

    Zip.

  4. #4
    Senior Member MASTER BUILDER
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    rod bolts

    I tried to look it up on thier web site and gave up after 15-20 minutes,not user freindly at all.

    Thanks for the info.!!! chart would be great also.

    Just looked at Eagle's web site and they list both set's of l 19 bolt's at 79flb
    Go Fast_Have fun

    Greg Farmer

  5. #5
    Senior Member RACING JUNKIE
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    Re: rod bolts

    Quote Originally Posted by contagious
    I tried to look it up on thier web site and gave up after 15-20 minutes,not user freindly at all.

    Thanks for the info.!!! chart would be great also.

    Just looked at Eagle's web site and they list both set's of l 19 bolt's at 79flb
    You're right it's not 72lbs. Here's the charts for Eagle and ARP, if you have Eagle bolts they are different than ARP. Below is the charts. If you have ARP bolts you'll need to know the pt #'s

    Zip.

    What Do I Torque the Bolts To?
    The first step is to identify which bolts you have. Eagle rods are offered with a variety of different bolts. Each of which has a different torque requirement. Proper bolt torque is paramount to rod strength and life. Eagle does not use "off the shelf" ARP bolts. Eagle has ARP custom make bolts to our specifications. DO NOT use torque specs for off-the-shelf ARP bolts. Here is a diagram of some important bolt identifying features.

    The following chart shows the head of the bolt, the dimensions, and the proper torque spec. Be careful! the heads of some bolts look similar and some even have the same markings. DO NOT identify the bolt by the head alone. Verify dimensions also! If the head of your bolts do not match one of the pictures below - you do not have Eagle rods! Please consult the manufacturer of your rods for proper torque specs. Their torque spec is most likely different than ours! Always use ARP moly lube on the threads and under the head of the bolt when torquing!
    material socket
    size under
    head
    length thread
    size torque
    8740 7/16" 1.500" 3/8" 40 ftlbs

    material socket
    size under
    head
    length thread
    size torque
    8740 7/16" 1.600" 7/16" 63 ftlbs

    material socket
    size under
    head
    length thread
    size torque
    8740 7/16" 1.750" 7/16" 63 ftlbs

    material socket
    size under
    head
    length thread
    size torque
    8740 7/16" 1.800" 7/16" 63 ftlbs

    material socket
    size under
    head
    length thread
    size torque
    2000 3/8" 1.500" 5/16" 28 ftlbs

    material socket
    size under
    head
    length thread
    size torque
    2000 7/16" 1.500" 3/8" 43 ftlbs

    material socket
    size under
    head
    length thread
    size torque
    2000 7/16" 1.600" 7/16" 75 ftlbs

    material socket
    size under
    head
    length thread
    size torque
    2000 7/16" 1.800" 7/16" 75 ftlbs

    material socket
    size under
    head
    length thread
    size torque
    L-19 1/2" 1.600" 7/16" 79 ftlbs

    material socket
    size under
    head
    length thread
    size torque
    L-19 1/2" 1.750" 7/16" 79 ftlbs

    material socket
    size under
    head
    length thread
    size torque
    CA 625+ 3/8" 1.500" 5/16" 32 ftlbs


    ARP torque specs


    CHEVY 131-6001 .0062 40
    132-6001 .0062 40
    132-6002 .0057 25
    133-6001 .0064 50
    133-6002 .0068 40
    134-6001 .0062 40
    134-6002 .0061 50
    134-6003 .0063 50
    134-6004 .0080 75
    134-6005 .0063 50
    134-6006 .0055 45
    134-6027 .0064 50
    134-6401 .0062 40
    134-6402 .0066 50
    134-6403 .0063 50
    135-6001 .0080 75
    135-6002 .0063 50
    135-6401 .0080 75
    135-6402 .0064 50
    234-6301 .0064 40
    234-6401 .0070 40
    234-6402 .0055 45
    234-6403 .0065 50
    235-6401 .0075 60
    235-6402 .0070 45
    235-6403 .0075 60

  6. #6
    Senior Member MASTER BUILDER
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    rod bolts

    Thanks for the chart.!!The rods are ohio crank h beams and i had them upgrade to the L 19 bolts,broke a gm 7/16 bolt and it cost me 10 grand to put this new motor together ,100 dollar upgrade seemed cheap.!!!!!!!


    Thanks again.
    Go Fast_Have fun

    Greg Farmer

  7. #7
    Senior Member RACING JUNKIE
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    Sorry for the wrong qoute.

    I upgraded my Eagle H beams to L-19's over the winter and I was going by memory and my memory doesnt serve me like it used too.
    Figured if I chimed in somebody would correct me, I'm always messing up :x

    Hey Zip, thanks>Cp
    ***IN GOD WE TRUST***

  8. #8
    Senior Member RACING JUNKIE
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    Quote Originally Posted by cepx111
    Sorry for the wrong qoute.

    I upgraded my Eagle H beams to L-19's over the winter and I was going by memory and my memory doesnt serve me like it used too.
    Figured if I chimed in somebody would correct me, I'm always messing up :x

    Hey Zip, thanks>Cp
    That's O'K Charlie, i've got a set of Lunati promod rods with ARP L19's in my 434" and the torque specs from Lunati said torque to 72 lbs. and ARP says 75 lbs, go figure.

    Zip.

  9. #9
    Senior Member DYNO OPERATOR
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    L-19 rod

    Torque varies with friction and lubricant.


    Stretch doesn't. .0063" stretch is the same every time.


    I have had ARP L-19 1/2" bolts on GRP rods vary 78-102 # to get .0063"-.0068".

    jme

  10. #10
    Senior Member RACING JUNKIE
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    I've got (3) 1/2 pints of ARP lubericant in my shop, I think mark is correct, on the stretch, i've never checked with the stretch but i think torque varies from alum. too steel rods also, I do occasionally check stretch, i have (2) .250 ball adapters that slide over the anvils of my micrometers

    Zip.


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