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Thread: torque specs for 360

  1. #1

    torque specs for 360

    I am ready to fire my 360 this weekend. 2 questions

    1 what is the torque spec for bridged rockers (folcrum style with bolt that threads into head) i have read anywhere from 28-35 lbs and 65-70 lbs.. sounds way to much to me.. anyone confirm?

    2 should i re-torque the heads after cam break in?

  2. #2
    The rocker bridges are like 20-25 lb-ft.

    Get a Haynes manual from the local auto parts store. They list all the torque specs.
    1977 AMC Jeep Cherokee: 360/TH400/1339/44/44 - Beavis
    1984 AMC Jeep CJ7: 401/SM465/AtlasII/44/9" - Grimm Jeeper
    1986 Chevy K20: 5.3/4L60/NP241/10b/14b - Tow Rig
    2004 Pontiac GTO: LS1/T56/M80 - :D

    Try out my gear ratio calculator (Now in metric)

  3. #3

    Join Date
    Sep 2006
    Location
    Stamford, CT.
    Posts
    125
    My Motors book:1974-1979 304, 360 rocker arm shaft bracket 19 ft lb*
    * = Rocker arm cap screw
    I am using roller rockers, they don’t get done the same way.

    What did the head gasket mfg say? My Fel Pro did not say any thing about re-torque, also do not remember any thing in my motors & Chiltons books about this either.
    No I have not re-torqued my 360 heads (291) and it has maybe half hour more run time after cam break in. I had to do break in in 2 steps as Tstat made temp get to 240+ that made the radiator blow out so temp got to 220 second time, replaced radiator and ran till temp got to 160+ checking/repairing leaks.
    To re-torque heads don’t the exh. manifolds/headers have to come off?
    This is my take on it others may be diferent.
    Dave ----
    75 GremlinX v8 64k
    76 GremlinX i6 (15yr sons)
    70 Javelin MD 390/4sp (360 now)
    70 Javelin 1/4 Drag car 360/auto best time 12.88...best speed 103.64 mph...best 60' 1.835 no tuning

  4. #4

    Join Date
    Sep 2006
    Location
    Stamford, CT.
    Posts
    125
    My Chilton: 1968-1970 Rocker arm assy or stud nuts 20-25 ft lb this is not a bridge rocker assy.
    The 19 ft lb is a bridge assy.
    Any one else have more to add?
    Dave ----
    75 GremlinX v8 64k
    76 GremlinX i6 (15yr sons)
    70 Javelin MD 390/4sp (360 now)
    70 Javelin 1/4 Drag car 360/auto best time 12.88...best speed 103.64 mph...best 60' 1.835 no tuning

  5. #5
    so 19 ft lbs it is!


    thanks all
    hopefully this time tomorrow it will go or blow.

  6. #6

    Join Date
    Sep 2006
    Location
    Stamford, CT.
    Posts
    125
    It will be a go! You got to think positive
    If you have not done it yet and I am thinking not because of rocker torque speck needed, Pre lube motor. I setup my rockers first and left covers off filled pan with oil (have extra, a dry motor takes a lot!) turned oil pump over with drill and long screw driver shaft till oil came out push rods/rockers, turn motor over ¼ turn by hand and did the drill thing again. I did this till motor was back to TDC and oil out all rods & rockers.
    Keep us posted on how it goes.
    Dave ----
    75 GremlinX v8 64k
    76 GremlinX i6 (15yr sons)
    70 Javelin MD 390/4sp (360 now)
    70 Javelin 1/4 Drag car 360/auto best time 12.88...best speed 103.64 mph...best 60' 1.835 no tuning

  7. #7
    My Haynes manual says for 1972 and 1973 the spec is 21

    For 74-91 it's 19
    1977 AMC Jeep Cherokee: 360/TH400/1339/44/44 - Beavis
    1984 AMC Jeep CJ7: 401/SM465/AtlasII/44/9" - Grimm Jeeper
    1986 Chevy K20: 5.3/4L60/NP241/10b/14b - Tow Rig
    2004 Pontiac GTO: LS1/T56/M80 - :D

    Try out my gear ratio calculator (Now in metric)

  8. #8

    Join Date
    Sep 2006
    Location
    Stamford, CT.
    Posts
    125
    Quote Originally Posted by zero cool
    My Haynes manual says for 1972 and 1973 the spec is 21

    For 74-91 it's 19
    72-73 was the years I was missing, well I may have it in the shop and the motors book went back to 74.
    I guess we need to know what year the heads are
    Dave ----
    75 GremlinX v8 64k
    76 GremlinX i6 (15yr sons)
    70 Javelin MD 390/4sp (360 now)
    70 Javelin 1/4 Drag car 360/auto best time 12.88...best speed 103.64 mph...best 60' 1.835 no tuning

  9. #9
    thanks guys..

    it was failure to launch...


    see my post in oiling section..


    yeah my heads are 74 and up

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