Post your 12 second small block combos

Mopar Racers Forum

  1. EL5DEMON340

    EL5DEMON340 Well-Known Member

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    71 demon, 3.91, 26" slicks, 11 to 1 stock stroke 360, home ported j heads, torker II intake, 750dp, 4,400 stall. Only time at strip 12.20, 1.66 60', 109 mph, carb was way to rich.
     
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    • 66durgederp

      66durgederp "pull hard, itll come easy"

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      .55" lift intake, .56" lift exhaust, 1.5 ratio pro magnum rockers. Duration at .050 is 239/243. Advertised is 291/295
       
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      • smithchargers

        smithchargers Well-Known Member

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        1971 Plymouth Duster in stock dress.
        I used to run an LA 360 stock low compression short block from a 77 truck. Stock x heads with a good valve job. Comp cams .525 lift solid lifter camshaft. Torker 2 intake with 750 DP. 1 5/8 cheap headers. 2 1/2” exhaust with turn downs at axle. Turbo Action 10” 3800 stall converter. 727 with reverse Manual valve body. 4.30 gears. Weld wheels running M&H Racemaster J60 15’s on the rear. Ran 12.51 @ 107 and some change.
        I still have the car but will be running a 360 magnum that duplicates the 380 crate engine.

        D794D327-F2BA-4590-9DE2-8EC0FF5BA44C.jpeg
         
        Last edited: Jun 6, 2019
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        • badbarracuda

          badbarracuda Member

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          69 barracuda fastback 408 stroker with 727 trans and 410 gear best time 12.20@110 mph
           
        • rumblefish360

          rumblefish360 So close, yet so far away FABO Gold Member

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          Great!
          Now tell us the combo!
          That’s what this thread is for. Help a MoPar brother out will ya? Tell us what’s inside the mill!
          Suspension?
          Tires?
          Weight?
           
        • Scamper

          Scamper Well-Known Member

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          71 scamp 12.1 112 mph 1.87 60
          408 10.2 comp
          Stage 2 ported 2.02 r/t heads
          Gasket matched air gap
          850 qf
          Comp xe274 with 1.6 rockers
          Tcs 2800 conv 727 trans
          Cal tracs with ss leafs
          Ce front shocks rancho rear
          4.10 275 m/t
           
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          • Scamper

            Scamper Well-Known Member

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            wanna see 11's in spring new trickflows with 1.56 springs and titanium retainers super victor pro systems carb xr286 cam howards mech roller lifters 8 point roll bar and a much bigger converter and 100hp zex system woohoo!
             
          • forphorty

            forphorty Well-Known Member

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            I bet the converter alone could get you in the 11.80s or so.
             
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            • Scamper

              Scamper Well-Known Member

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              I agree I am after mid or low 11's on motor car going in 2 weeks for 8 point just in case lol
               
            • MAPS

              MAPS Well-Known Member

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              @Scamper

              You are using CalTracs with Super stock springs ?
              How is that working out for you ?
              Seems to be a complete oxymoron with that set up, no ?
              Thanks.
              MAPS
               
            • QuickDart360

              QuickDart360 Well-Known Member

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              Running a magnum 360 cool. What will you do with x heads? Willing to sell?
               
            • Scamper

              Scamper Well-Known Member

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              I called Caltracs and they said no problem actually the cuda guy there said he runs the same. They work very well solved a lot of traction issues
               
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              • Moparhead

                Moparhead Well-Known Member

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                Any idea how much flywheel hp that made? That sounds identical to my 340
                 
              • Hysteric

                Hysteric Well-Known Member

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                1964 Valiant 3300 pounds with driver
                360 .70 over with 9.6-1 comp
                Ported 302's 62 cc
                Performer manifold with Edelbrock 600 carb
                Crower 271 HDP cam 1.6 rockers
                1.5/8 headers and 2.5 inch exhaust
                904 TA 10 inch converter
                8 3/4 3.73 gears
                M/T 255 street radials

                Ran 13.04 @ 102.5 with a 1.84 60ft pulling 4 inches of vacuum at the finish line.....
                 
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                • rumblefish360

                  rumblefish360 So close, yet so far away FABO Gold Member

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                  Did you ever break into the 12 second zone, since that is what the thread is about?
                   
                • Hysteric

                  Hysteric Well-Known Member

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                  Many many times but with more head,intake and carb on the same short block in the same car

                  12.66 @ 106.7 with a Crower 294FDP ported 360 heads weiand stealth and 800AVS best 60ft 1.80
                  12.81 @ 105.5 with the 271HDP ported 360 heads weiand stealth and 800AVS best 60ft 1.84

                  This combo will run 12's easily next time out when it gets all the carb it should.
                   
                • rumblefish360

                  rumblefish360 So close, yet so far away FABO Gold Member

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                  The. That’s when you should post it.
                  Looking forward to it when it happens.
                   
                • MAPS

                  MAPS Well-Known Member

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                  Thanks..

                  MAPS
                   
                • Hysteric

                  Hysteric Well-Known Member

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                  Car went 12.63 @ 107 mph on a 1.853 60ft.
                   
                • rumblefish360

                  rumblefish360 So close, yet so far away FABO Gold Member

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                  Then why did you not post up that “Qualifying” combo?
                  Why did you bother to post this “Non qualifying” combo below?
                  Can you post up the parts used in the combo?
                  This thread is after all a thread to help out a fellow MoPar brother or sister in search of how to do it instead of fumbling around making costly mistakes and failing.
                  Your description lacks.
                   
                • Hysteric

                  Hysteric Well-Known Member

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                  Car went 12.63 @ 107 mph LAST NIGHT.....

                  It went 13.04 @ 102.5 with a 1.84 60ft pulling 4 inches of vacuum at the finish line.....THE PREVIOUS WEEK.

                  Its just a stock bottom end 360 with H405cp's

                  It should be pretty obvious to our fellow MoPar brother's or sister's that a ported 318 head can make power?

                  I hope this clears up any misunderstandings
                   
                • jbharris

                  jbharris Member

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                  IMG_6664.JPG 1968 Valiant 340 .030 over forget the piston but its around 9.5.1 off the shelf edelbrock rpm heads M1 intake Comp Magnum Series Solid Lifter Cam .248/.525. Hooker Comp Headers 750 proform carb PTC 3500 stall 4.30 gears and super stock leaf springs on 28X10.5 Hoosiers. Guessing weight is around 2850-2900lbs The fastest so far is 11.98@ 115 1.62 60ft.
                   
                  Last edited: Mar 24, 2020
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                  • abdywgn

                    abdywgn dismantler

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                    from High Performance Mopar Sept.2001:74 Challenger 360,10" unknown convertor with 3000 stall,,904,3.55 with 235/15 T/A drag radials.
                    Engine is 30 over flat top hypereutectic pistons,78 596 castings with 1.88/1.60 valves and home porting,Summit hydraulic .441" lift 218/228 dura. at 50. Edelbrock air gap with Holley 750 DP. DUI ignition,Hedman 1-5/8" headers. Best time in that article was 12.64 at 105. Car weighed in at 3600 lbs. In a lighter A-body with more gear and 2.02 valves and more cam...
                     
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