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Thread: LM7 Cam Questions

  1. #1
    Join Date
    Jul 2012
    Location
    Mansfield, TX
    Posts
    26

    LM7 Cam Questions

    would i be able to run this cam with a stock bottom end ?
    Top end is so far 706 heads Ls6 springs Ls7 Lifters
    it says 10.5:1 CR i believe the 03 Lm7s have 9.5:1 would i be able too regardless or what can i do to bump it up.
    Basic Operating RPM Range: 2,500-6,300
    Intake Duration at 050 inch Lift: 220
    Exhaust Duration at 050 inch Lift: 224
    Duration at 050 inch Lift: 220 int./224 exh.
    Advertised Intake Duration: 278
    Advertised Exhaust Duration: 282
    Advertised Duration: 278 int./282 exh.
    Intake Valve Lift with Factory Rocker Arm Ratio: 0.575 in.
    Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.575 in.
    Valve Lift with Factory Rocker Arm Ratio: 0.575 int./0.575 exh.
    Lobe Separation (degrees): 112
    any info would be great thanks

  2. #2
    Join Date
    Sep 2008
    Location
    Arizona/Utah
    Posts
    3,939
    Yes that is a moderate cam in a 5.3 and would work great with about a 3k stall. Great stall for a DD or mild truck.
    ECSB 2kSierra 2wd 4.8L-K&N-HPtuners-Calspeed LT's-Magnaflow-Tahoe20's-HankookRH06

    waiting to go in... 3.90s, 214/220cam

  3. #3
    Join Date
    Dec 2009
    Location
    DIrty south AZ
    Posts
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    im runnin a tr 220 cam in mine with ls6 springs and ls7 lifters. 3000-3200 stall FTW
    Built 2 Run! 6XX HP/ 6XX TQ

  4. #4
    Join Date
    Aug 2008
    Location
    mansfield texas
    Posts
    3,512
    Red truck on that cam but lower lift has gone 12s now... With stock gears I went 13.6 3200 stall.

  5. #5
    Join Date
    Dec 2009
    Location
    DIrty south AZ
    Posts
    1,020
    Quote Originally Posted by Crazy Blu View Post
    Red truck on that cam but lower lift has gone 12s now... With stock gears I went 13.6 3200 stall.
    its a great DD cam, as far as the 224 im sure it would be too just get alittle higher stall. i love mine cuz i can still tow the boat in the hills and not worry about anything
    Built 2 Run! 6XX HP/ 6XX TQ

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