Help my Foxbody

Discussion in 'General Tech' started by TanTop94, Feb 16, 2014.

  1. TanTop94

    TanTop94 Well-Known Member

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    Ok well my Dads but Ive been attempting to get alittle more info on why this thing runs the way it does and a few things that could be changed about it to make it run better. Its been awhile with this thing..Im going through all of the receipts so give me a break lol.


    Ok so a 1989 Mustang GT vert with a 347 stroker, Worldclass t-5 tranny, built 373 rear....to break that down some...

    Just found a link for the kit it looks like he bought...http://www.summitracing.com/parts/hly-300-501-1


    Engine
    Holley Commander 950 PRO
    Holley 70mm TB
    Holley 70mm EGR spacer
    Holley Systemax Upper and Lower Intake
    Holley adjustable Fuel pressure regulator
    1.6:1 roller rockers
    MSD Dist
    Holley Annihilator Ignition system
    Holley Aluminum Heads - http://www.summitracing.com/parts/hly-300-575
    Lunati Cam 276/280 221/223- I believe this is the cam
    30 or 36lbs Injectors
    High Pressure Oil pump
    Holley 190 lph pump
    Moroso Oil Pan
    UD Pulleys
    Battery relocated to trunk
    Hardened Push Rods


    Transmission
    Worldclass t-5 tranny
    Spec Stage 2
    Adjustable Quad


    Exhaust
    BBK equal length short heads
    BBK catted xpipe
    Dynomax catback

    Im not sure if Im being picky about this car but this thing can be all over the place the problems are as included...

    -If your not on the gas at all time it bucks, very hard actually.
    -Oil coming through upper intake, actually dripping out of the CAI (High pressure oil pump,
    -Breaks up in higher RPM, not getting enough fuel?
    -Battery barely charges, UD pulley?
    -Oil fouled all the plugs- just replaced with new wires as well.

    If theres any more info you guys need to give me alittle more insight let me know! I have a whole disorganized book on this car:D
     
  2. rz5.0

    rz5.0 Legend

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    Is the car tuned?
    Is the pcv set up properly?
    Are you getting a good ground to the battery?
     
  3. TanTop94

    TanTop94 Well-Known Member

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    The car was dyno tuned, not sure who did it though. PCV could be the problem...not really sure how to properly set it up though. Never really messed with it. Im gonna check the ground on the battery and see how they set that up with it being in the trunk.
     
  4. rz5.0

    rz5.0 Legend

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    The pcv should be routed similar to that of the sn. Valve cover inlet to the intake tube. Pcv to upper intake vacuum.
     
  5. TanTop94

    TanTop94 Well-Known Member

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    Yeah that's how it is set up
     
  6. rz5.0

    rz5.0 Legend

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    Compression test
     
  7. fiveohwblow

    fiveohwblow Active Member

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    I might point to the MSD dizzy being your issue with the breaking up. Also, what plug wires and have they been replaced? I tend to lean toward the fouled plugs and breaking up an ignition issue and not fuel. What is base fuel pressure set at with the vacuum line disconnected?
     
  8. rz5.0

    rz5.0 Legend

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    Agree but fouled with oil I don't think it's ignition related.
     
  9. fiveohwblow

    fiveohwblow Active Member

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    Yeah valid. Hard to tell if its oil, unspent fuel or just a combo of both without being there. I have been fooled by what appeared to be oil but was miles of unspent fuel buildup which is why I lean toward ignition.
     
  10. rz5.0

    rz5.0 Legend

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    True
     
  11. TanTop94

    TanTop94 Well-Known Member

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    Well this should be fun lol.

    Ill run out and check in alittle, I should be doing school work right now but eh everyone needs a break. I know the plugs and wires were just replaced like a month ago. Id have to check, like I said I dont have all the info right on hand lol.