How much hp and 1/8 ET

Discussion in 'Mopar Racers Forum' started by 68 barracuda 68, Dec 6, 2018.

  1. 68 barracuda 68

    68 barracuda 68 Member

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    hi, waiting on my engine getting finish, the combo is 408cid , mild ported W2 heads, TTi W2 headers, 830 holley,10,8:1 comp, comp cam duration 296 valve lift inn 0,649 exaust 0,651 rpm range 4200 to 7400. 727 tci transmission, dynamic 9,5 3800-4200 stall, 4,56 gear, 28-10,5x15 slicks. How mutch horsepower can i expect to have, and 1/8 ET weigt of the car is around 3000lbs
     
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    • j par

      j par Well-hung Member

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      If you've never drove a car like that I'd say your in for one hell of a ride!
       
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      • moparcrazy

        moparcrazy Well-Known Member

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        500-550 HP & Depending on your suspension, 11.80-12.00 just my opinion. how many times have you been down the track also play's a bigger role in ET times, Good luck fun times ahead.
         
      • 68 barracuda 68

        68 barracuda 68 Member

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        Well been driving 5,56 1/8 but that was a another car, next seasonn with be with my barracuda street legal, my hope is to drive 6,70 1/8
         
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        • 68 barracuda 68

          68 barracuda 68 Member

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          Been driving for some years, suspension is Qa1 and qa1 front
           
        • j par

          j par Well-hung Member

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          10-4.
          Cool your a new member and we have no background. And you guys over ponds like some crazy horsepower.
           
        • moparcrazy

          moparcrazy Well-Known Member

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          I'm quoting 1/4 mile times, but your car only weighing 3000 LBS & better than stock suspension should have better ET's then what I mentioned, even faster then 6.70 IMO.
           
        • roccodart440

          roccodart440 Well-Known Member

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          If this is accurate it's very similar to my car which makes ballpark 500 at the crank (I only know what it makes at the wheels) and runs 11.70's in the quarter. That goes 7.40's in the 1/8th
           
          Last edited: Dec 6, 2018
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          • 68 barracuda 68

            68 barracuda 68 Member

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          • 68 barracuda 68

            68 barracuda 68 Member

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            Im getting the engine tested and tuned at the flywheel, what does the calculator says about hp on my combo? Is wallace calculator hp at the flywheel?
             
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            • moparcrazy

              moparcrazy Well-Known Member

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              That's a good question, I've often wondered the same, but comparing it to my build I would say Yes, its flywheel comparison?
               
            • B3422w5

              B3422w5 Well-Known Member

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              Should run 10.50’s easy enough. 6.60’s in 1/8
              Obviously more convertor would help, and not sure exactly what cam you have
               
            • 68 barracuda 68

              68 barracuda 68 Member

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              D060E99D-DA04-4876-B37A-04EEA2903B75.jpeg
              That would be perferct, yes im also woried about the converter, but will make some runs in it if it goes 6,70 im happy with it, the class im going in is 6,70 Et. Here is my cam:
               
            • skrews

              skrews Well-Known Member

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              525hp 6.7s @ 100 in the 1/8
               
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              • justinp61

                justinp61 Well-Known Member

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                I don't think 6.70's will be a problem with what you listed, more converter will help. I went high 6.50's with less cam, 10.9-1, ported Edelbrocks, 727 with a 9.5" converter that flashed 5000, 4.10 gears and a 325 (28" tall) radial at 3260 pounds. If the heads are decent you could go faster than .50's.
                 
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                • crackedback

                  crackedback FABO Gold Member FABO Gold Member

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                  ET is ALL chassis/converter!!!

                  What takes one person to go a certain ET, might take another 50-70HP less... Get the car to 60' like crazy and the ET will follow.
                   
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                  • Hot Metal

                    Hot Metal '69 440 Cuda

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                    Wallace is fwhp and @a mere 530hp with your car you have the potential for this when sorted>
                    60 Foot E.T. : 1.44
                    1/8 Mile E.T. : 6.55
                    1/8 Mile Trap Speed : 103.77
                    1/4 Mile E.T. : 10.38
                    1/4 Mile Trap Speed : 129
                    1/4 Mile Trap RPM : 7,069
                     
                  • 68 barracuda 68

                    68 barracuda 68 Member

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                    Thanks, will give a update after the dyno results, hopefully in some few weeks
                     
                  • bluefish

                    bluefish mopar dave

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                    Spot on. Those numbers are right on what my 408 ran with Indy heads, 11.25:1 and 8 " 5400 stall. 3300# race weight. Rest of motor was much like yours. 10.38@130 was my best pass ever. 6.66@103 was best 1/8. Should be fun.
                     
                  • o1heavy

                    o1heavy 1974 dart sport

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                    Which Indy heads ??
                     
                  • Hot Metal

                    Hot Metal '69 440 Cuda

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                    At 3300lbs you have stout motor that makes in the order of 585fwhp:thumbsup:
                     
                  • bluefish

                    bluefish mopar dave

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                    360-1 with some port work . They flowed 325@.700".
                     
                  • bluefish

                    bluefish mopar dave

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                    Long story short. I freshened it with 13.5:1 compression and max ported the heads. It came apart in a big way on the dyno. Had a oiling problem I never figured out. I now have a 511 with E MW heads.
                     
                  • MikeD

                    MikeD Well-Known Member

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                    roccodart440
                    I don't know how much your car weighs but my old full weight 70 Challenger street car ran 11.83 at 113 with around 450-475 hp with 440 ported stock heads, hyd cam.
                     
                  • roccodart440

                    roccodart440 Well-Known Member

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                    not sure. the scale house has never been open and I don't have scales at home. I'd guess 3200+me