spring help for new cam
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spring help for new cam

  1. #1
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    Default spring help for new cam

    I am building my twin turbo motor up and am installing a new cam and need help with the lifters. Motor is a 454 with 8:5 compression with 990 heads and twin t6 turbos. Motor may see up to 20 lbs of boost. Cam is a .660 lift solid roller cam with 113 lobe separation and intake centerline. Heads are setup for dual springs. Max rpms 6800. Was running a flat tappet cam before. Let me know if you need any other info.

    Dan

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  3. #2
    Senior Member 67weiman's Avatar
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    Are you saying .660 lift figuring in your rocker ratio?

    What motor is that cam from?
    Last edited by 67weiman; 11-09-2011 at 10:02 PM.

  4. #3
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    Thats with 1.7 rockers. i also have 1.8 rockers so i guess need springs good to just over 700 lift if needed. Yea decided to go with a solid roller cam and go bigger. The cam in it was a flat tappet cam with 540 lift.

    Dan

  5. #4
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    Cam is a new cam custom ground. Just got it today from comp

  6. #5
    Senior Member 67weiman's Avatar
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    I would assume comp would give you a recommended spring for that cam?

  7. #6
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    Yea they left the cam card blank in the spring recs.

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