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Thread: What 1/4 mile ET with Eaton swap or complete cobra motor swap

  1. #1
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    What 1/4 mile ET with Eaton swap or complete cobra motor swap

    Just curious of what one should expect to run with one of the swaps mentioned above?
    2003 Black/Light Flint MM, PROCHARGER D1SC#30, 4.10 GEARS, REAR COOLING MOD, ZACK BIG BRAKE KIT, 3500 STALL, WIDENED REAR WHEELS.

    1993 MUSTANG LX HATCH, 347 STROKER, 3.73 GEARS, TUBULAR K MEMBER, TKO 3550 TRANNY, AEROSPACE DUAL PISTON BREAKS.

  2. #2
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    Check Glenn, Trilogy, Time Slips.

    Weathers adds up to .75 seconds.
    1/4 Mile Time 11.542 @ 121.19 MPH
    195,000 Miles & 275+ Runs Down the 1,320’
    541.57 RWHP & 476.64 RWTQ on DynoJet
    Tuned by Aric at Injected Engineering
    Vortech Super Charger V-2 “T” Trim, 19 PSI
    8 Rib Belt, Innovators West 10% Overdrive Dampner
    Air to Air Intercooler, Mini-race Bypass
    Ford Cobra Remanufactured Long Block
    Snow Performance Water-Methanol Injection
    Kooks Headers & X Pipe
    GT MAF, 60lb injectors, Dash 8, Aero Rails, Twin Ford GT Pumps,
    Kinsler Fuel Filter, Kenne Bell Boost-A-Pump
    Monroe Sensatrac, Metco Control Arms, Addco Rear Sway Bar
    31 Ford Spline Axles & Detroit Truetrac, 4:10 Ford Racing Gears
    Dynotech MMC Driveshaft
    A-1 Performance Trans, Forced Tailshaft Lube, Carbon Clutches
    3,500 RPM Stall Precision Industries Torque Converter
    B&M Deep Finned Trans Pan
    AeroForce Scan Gauges , Auto Meter Oil, Fuel & Boost Gauges
    Kenny Brown Dead Pedal, 35% Tint, Silver Star Head Lights
    AutoPage Alarm RS-727LCD, Boston Acoustic NX87

  3. #3
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    Quote Originally Posted by JBeezy View Post
    Just curious of what one should expect to run with one of the swaps mentioned above?
    my guess...
    SWAP: higher compression than stock Cobra, but detuned to not detonate.
    might feel more frisky light to light with a heavy auto
    swap power tops out at ~425rwhp = low 13's? high 12's?
    forged internals (Cobra) could boost higher, maybe 575 cozy rwhp = in the 12's or something's wrong. $$
    sent from my rotary phone using Technicolor


    2004 SILVER BIRCH/BLACK PAINT
    DARK CHARCOAL NUDO LEATHER
    #400 of 997 (SOLD)

    2004 CV LX SPORT
    ALL BLACK, 6 DISC, TUNED MZT (SOLD)

    2004 300A MM BLACK
    1 OWNER CAR, NO OPTIONS
    DAILY DRIVER

    2013 DAYTONA R/T
    SUPER TRACK PACK
    DAYTONA BLUE PEARL
    #1763 off ~2100
    NOW WITH A 392 & 3.73 posi!

  4. #4
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    Although I have not run mine..Jeff at MO's said as long as there is traction, my car should be in the low, low 12's any day of the week. 575 RWHP..low 11's..
    2004 SB Ported Trilogy 48
    Has supporting mods and stuff
    Thanks to Marty O for his help in updating this car.

    R.I.P.
    Rex "SC Cheesehead"

  5. #5
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    Quote Originally Posted by RubberCtyRauder View Post
    Although I have not run mine..Jeff at MO's said as long as there is traction, my car should be in the low, low 12's any day of the week. 575 RWHP..low 11's..
    I wanted to under promise and over deliver
    your numbers are more likely closer
    sent from my rotary phone using Technicolor


    2004 SILVER BIRCH/BLACK PAINT
    DARK CHARCOAL NUDO LEATHER
    #400 of 997 (SOLD)

    2004 CV LX SPORT
    ALL BLACK, 6 DISC, TUNED MZT (SOLD)

    2004 300A MM BLACK
    1 OWNER CAR, NO OPTIONS
    DAILY DRIVER

    2013 DAYTONA R/T
    SUPER TRACK PACK
    DAYTONA BLUE PEARL
    #1763 off ~2100
    NOW WITH A 392 & 3.73 posi!

  6. #6
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    I just read in another thread..member has 600 HP, 600 TQ and runs a 10.35.. it is better to advise less and beat the estimate...
    2004 SB Ported Trilogy 48
    Has supporting mods and stuff
    Thanks to Marty O for his help in updating this car.

    R.I.P.
    Rex "SC Cheesehead"

  7. #7
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    If it's a Marauder he must also be using Nitrous or he's got more HP.
    1/4 Mile Time 11.542 @ 121.19 MPH
    195,000 Miles & 275+ Runs Down the 1,320’
    541.57 RWHP & 476.64 RWTQ on DynoJet
    Tuned by Aric at Injected Engineering
    Vortech Super Charger V-2 “T” Trim, 19 PSI
    8 Rib Belt, Innovators West 10% Overdrive Dampner
    Air to Air Intercooler, Mini-race Bypass
    Ford Cobra Remanufactured Long Block
    Snow Performance Water-Methanol Injection
    Kooks Headers & X Pipe
    GT MAF, 60lb injectors, Dash 8, Aero Rails, Twin Ford GT Pumps,
    Kinsler Fuel Filter, Kenne Bell Boost-A-Pump
    Monroe Sensatrac, Metco Control Arms, Addco Rear Sway Bar
    31 Ford Spline Axles & Detroit Truetrac, 4:10 Ford Racing Gears
    Dynotech MMC Driveshaft
    A-1 Performance Trans, Forced Tailshaft Lube, Carbon Clutches
    3,500 RPM Stall Precision Industries Torque Converter
    B&M Deep Finned Trans Pan
    AeroForce Scan Gauges , Auto Meter Oil, Fuel & Boost Gauges
    Kenny Brown Dead Pedal, 35% Tint, Silver Star Head Lights
    AutoPage Alarm RS-727LCD, Boston Acoustic NX87

  8. #8
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    Quote Originally Posted by RubberCtyRauder View Post
    Although I have not run mine..Jeff at MO's said as long as there is traction, my car should be in the low, low 12's any day of the week. 575 RWHP..low 11's..
    What are you making to the tires now
    2003 Black/Light Flint MM, PROCHARGER D1SC#30, 4.10 GEARS, REAR COOLING MOD, ZACK BIG BRAKE KIT, 3500 STALL, WIDENED REAR WHEELS.

    1993 MUSTANG LX HATCH, 347 STROKER, 3.73 GEARS, TUBULAR K MEMBER, TKO 3550 TRANNY, AEROSPACE DUAL PISTON BREAKS.

  9. #9
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    455RWHP....
    2004 SB Ported Trilogy 48
    Has supporting mods and stuff
    Thanks to Marty O for his help in updating this car.

    R.I.P.
    Rex "SC Cheesehead"

  10. #10
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    Trilogy and stock bottom end I ran consistent 12.1's @111


    Builder Of Badassery
    SOLD 12/31/2021

    Cobra short block / ProCharger F1-A / Cog drive upgrade / Manley valves / Brian Tooley Racing valve springs / 80# inj. / -8 fuel line / -6 return / Aeromotive 340 pumps and regulator / 2012 GT500 TR6060 six speed / twin disc clutch / Driveshaft Shop GT500 upgraded CV joint shaft / BA5000 blow thru MAF/ 4.10's / Ford Racing 31 spline set up and Girdle / Metco D.S. safety loop / Stainless Works headers, cats, and everything else out back / ClassGlass hood / Bob's hood strut mod / Hurst line lock / Metco control arms / Addco front and rear sway bars / Monroe severe duty shocks all around / Race concepts rotors / Badgeless grille / 35% tint / FBM's interior LED kit and ambient lighting kit / Pioneer FB700 deck / kenwood speaker 4 Ch. / Rockford Fosgate 10" sub and amp / Kicker 6 X 8's all around / back up cam / bluetooth / Pioneer Xm / 704 RWHP 603 RWTQ tuned by Mo's Speedshop.

  11. #11
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    How much power are you putting down for starters
    392 Challenger YELLOW JACKET
    12.28@114 stock

  12. #12
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    Most with a Ported Eaton is in the 520rwhp range @ 18psi. Similar compression ratio as the 03/04 Cobras. Consistent 11.7s with sticky shoes, 12 @ 118.45 with Nitto 555 street tires. High IAT temps though. Need to upgrade heat exchanger. Stock cobra vs. AFCO dual pass with fans is 30deg cooler.
    11.931 @ 116.33 (MT ET Streets)
    12.073 @ 118.43 (Nitto 555)

    I love the smell of Nitromethane and rubber in the morning!
    Drag racers prayer:
    As I lay rubber down the street, I pray for traction I can keep, but if I spin and begin to slide, please dear God protect my ride." -Amen

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