Boost capacity

Discussion in 'Fox 5.0 Mustang Tech' started by 93cobra12, Dec 22, 2003.


  1. 93cobra12

    93cobra12 New Member

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    I've heard its pretty dangerious to run more then 12 lb of boost with a 8.8 compressed motor? is this true? My combo which will be taking that 12lb of boost is :

    331 / sportsman block /main girlde
    srs light weight pistons set for 8.8 compression
    185 AFR heads
    v2-sq trim w/ power pipe ( stock pulley )

    I really want to put more boost into her, do you guys think its safe too? what would be the most boost i should put into this motor?
    #1
  2. staticc

    staticc Founding Member

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    i wouldnt really know, but i think milage on the motor is a big part of it. you should post that info too :)
    #2
  3. 93cobra12

    93cobra12 New Member

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    its a baby, just assembled... has a little over i'd say 600 miles.. Anybody?
    #3
  4. QDRHRSE

    QDRHRSE New Member

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    12lbs should be fine

    As long as you have forged pistons and enough fuel you should be just fine @ 8.8:1 w/12lbs of boost.
    #4
  5. 89Notch

    89Notch Founding Member

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    Just make sure you have enough gas and tune it good. The new 911's run 9.4:1 with twin turbos...
    #5
  6. SuperchargedB87

    SuperchargedB87 Founding Member

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    You can run a lot more than 12psi with 8.8 to one. You can run 12 psi with 9 to 1 without problems. As mentioned before, make sure you got enough fuel for it and don't run too much timing, and you'll be fine. My new combo is 14psi with 9.7 to one.
    #6
  7. TIMMY2734

    TIMMY2734 Founding Member

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    Your fine. You dont NEED forged pistons, but its a good investment. You could run plenty of boost on your motor the way it is. Intercool it, and you could run even more
    #7
  8. tvmango

    tvmango New Member

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    plus you have a sportsman block, i would think no problems....
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  9. 89Notch

    89Notch Founding Member

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    I don't know what a block has to do with burning holes through pistons but... ok? :shrug:
    #9

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