How would you build a low 10’s street car

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  1. j par

    j par Well-hung Member

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    Very interesting...
     
  2. j par

    j par Well-hung Member

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    Actually he has a legion of 14 over on another thread...
    I thought it was 318hasvalvesthatwillfly?
    You did take a little bit of a left turn at Kmart with this I thought but it didn't sound over offencive though as well...
     
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    • rumblefish360

      rumblefish360 So close, yet so far away

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      In a thread where the OP listed concerns of ET and mileage .....

      In post #81. he starts in with renaming me. Childish ... Then goes on to saying he doesn't remember the OP asking about concerns of MY creature comforts..
      Then tells me to "Med up." insulting...

      He said "I will never drive NYC" with my reply having a ROFLOL icon and the take it easy line of "(JK)" for joking.

      In the same reply about the 10 second goal, he states he has 4 classic cars that gets 13 mpg's and has no creature comforts. So they must be all 10 second cars! Or why would you enter this fact (?) in to the 10 second thread. If you got this, 4 classic 10 second cars that you road trip in the dead of hazy, hot & humid, your an iron man by me!

      He then "Assumes!" I live in NYC and dispenses pity. Seriously? Your giving me pity to a place you think I live in? Even IF I did live there, that would be my choice. I don't need to be given pity for the place I choose to live in.

      You have great nerve dispensing pity on where (You think) people live.

      Thge best and most retarded thing I read by him is "I have to drive through the city." and then "You didn't say you "Get to drive through the city."

      WTF? Say what? Splitting hairs somewhere and twisting the meaning to your favor?
      OMG, OH PLEASE! Come on now. Seems like someone hangs out with the mean girls in debate club. Followed by it wasn't offensive?

      ready? Fake news everybody, scratch that, foward to out right lie! By "318WILLRUN!"

      I never stated directly, in directly or otherwise imply ANYTHING OF THE SORT, to 318WR "Will my street car go through NYC w/ A/C on"

      So now that I have shown you all that his highness, "318WR" is a lier, insulting word twisting mean girls club member of twisting the facts out of no where bitch, take heed. Or you will be next to experiance his fodder on your head.

      Your BS story is so full of holes its crazy.
       
      Last edited: Aug 21, 2019
    • 318willrun

      318willrun Stomper 4x4... we kept energizer in business

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      ....
       
      Last edited: Aug 20, 2019
    • cojohnso

      cojohnso Well-Known Member

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      My Duster runs 10.20s. 451 B1 heads on E-85 Fuel. And it's ok on the street. Even with 4.56:1 with spool. Just be VERY careful around corners.
       
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      • Cope

        Cope Fusing with fire

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        But... its a "street" car... no time slips handed out at the stop lights?....

        :rofl::elmer:

        I know, i know, this is a 10 second thread but hopefully I'll be dam close next season!

        :thumbsup:
         
      • mbaird

        mbaird mbaird FABO Gold Member

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        If you go turbo or nitrous on a bigblock it will be fairly forgiving on driveline gear and be easy on the street.

        I expect my 408 W2 to run mid to upper 10s and be very streetable. But I spent a fair amount and want a “Stockish” Appearance...
        A strong Bigblock would have been easier...
        Hell do a 500+ stroker !
         
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        • rumblefish360

          rumblefish360 So close, yet so far away

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          Read up champ, er, sorry, chump.....
           
          Last edited: Aug 21, 2019
        • rumblefish360

          rumblefish360 So close, yet so far away

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          Thanks for the update. His Lordship should be careful not to let himself fall off the ball and his minions hailing him so little. I wouldn't want the GOD to fall off his chair by some wicked act and bruise his soft cheeks.
           
          Last edited: Aug 21, 2019
        • AJ/FormS

          AJ/FormS 68 B'cuda fb, Form S clone ... 367/A833/3.55s FABO Gold Member

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          the original question was
          Most of these combos are a far cry from a 340. Which is never gonna get there , normally aspirated.
          1970Boy said "I was thinking something along the line of turbos, overdrive and 2.91’s"
          and IMHO, supercharging is the only way to go, turbo's being the most likely way to go.
          But I would start with a low compression 5.9Magnum, for a lil more Effective Stroke, to allow a lil more stuffing room
          And I would run an A500/518 for the overdrive, and a lot more gear than 2.91s. To get off the line nicely with that low-compression slug, your 3.55s will be just Ok, and they become 2.45s in .69od. So; 65=1900 in loc-up, with 28s, and that might bring the final-drive into a decent fuel-economy range.Yeah 3.55s sound all wrong for 130 mph.... normally aspirated. But for a turbo combo 130mph with 3.55s and 28s would be ~ 5800 in Drive,lol.
          Since yur gonna need ~600hp, and the low-compression 5.9M 4bbl is gonna make maybe 280, yur gonna need to, more than double the horsepower. No problem, just crank up the boost.
          If I was doing it; I might try something different, namely a remote mount turbo.I would chose the 360 strictly for the off-boost torque, cuz with a single remote-mounted turbo, it's probably gonna need a bit of work to spool the turbo up. I would prefer the extra cubes to a hi-stall. The lo-compression 340 might be a lil soft off-boost at zero mph, IDK.
          Plus you can sell the good-running 340 for more than what you are gonna have to pay for a highly-recommended Magnum 5.9core, together with it's A518.
          With adjustable boost, you can tame it for the street. And just crank it up at the track, until it blows. There's gotta be a low 10 in it somewhere.
          but I too am "just spitballing and have no real knowledge of mechanics behind me"

          For this combo, I would not use the A833/GVod combo , for a couple of reasons;
          1) I hate the sound of that BOV
          2) the turbo will fly thru the gears and you will keep missing the 1-2 shift, maybe the 2-3 as well,lol.I don't mean "missing" the shift exactly; I mean it comes up faster than you anticipated and she gets up on the rev-limiter before you know it. I hate that sound.lol.
          3) I'm not sure you can afford the clutch it's gonna take to manage that beast, and getting off the line will likely be extremely inconsistent without it. Not to mention that it's gonna be real hard on the U-joints and driveshaft. Oh heck, hard on everything back there.
          4) the OD is only .78; so 65mph with 3.55s and 28s will be 2160, which being 260rpm higher or 13.7% higher, than with the A518 , which could be ~ 7% less fuel economy. That could be 1 to 1.5 mpgs in steady-state cruising.
          5) Forget using it as a splitter; the ratios with an A518 are not favorable to it, and the GV people told me that you can't backshift it under full power. That means you gotta lift-shift outta the split, and bye-bye 10.2..
          As an example, I can barely keep up with my 430 hp combo; when the tach starts winding up it gets mighty busy on the stick, and timing the lift-foot. It's a lotta fun and all but there is no consistency to it. With just about 700 rpm drops tho, it sounds really sweet from the bleachers. The tach goes to 7000 and I shift by the Speed-O, cuz the tires never stop spinning, and the tach just stays on 7000, the useless POS.lol.
          6) Clutches blow up
          7) The A833 is gonna need to be slick-shift modded to slip into the next gear consistently. If you don't mod it, it could hang up, and if the gas-pedal is on the floor, then the turbo is gonna drive your rpm thru the roof. And if your gas pedal is not on the floor; bye-bye 10.2
          8) The GV od must be protected from accidentally being engaged in reverse; That is instant death to it.
          9) The driveshaft is really short. The pinion angle and front angle start playing off eachother, setting up an impossible to cure vibration. I don't think you could ever cure it with keeping the leafsprings.
          10) I'll think of some more

          If I had the money and drive; I think I would try to set up a staged system with a small turbo under the front passenger seat, or up in the fender behind the front tire, and the remote in the back somewhere. Then I might downsize to a 5.2Magnum. But I wouldn't be targeting a particular ET,
          I just want about 360hp/450torque/30mpg combo and it ET's whatever.
          Hey maybe a 340 would be fun, yeah a lil more room for 2.02s then. I think I still have one or two of those kicking around. maybe several even,lol.
           
          Last edited: Aug 20, 2019
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          • 4spdragtop

            4spdragtop FABO Gold Member FABO Gold Member

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            Subscribed...for the antics if nothing else.
             
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            • mopardude318

              mopardude318 Well-Known Member

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              There’s actually a real nice big block for sale on moparts for about $10.5 K. Should have more than 600 HP from what all parts he has. I’d grab that if I had an extra 10 g’s. Couldn’t build it for that in my opinion.
               
            • RustyRatRod

              RustyRatRod 30 Degrees Outta Whack FABO Gold Member

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              3.55s suck. Wapner's on at 4.
               
            • 318willrun

              318willrun Stomper 4x4... we kept energizer in business

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              torque of the 440 in a A-body, 3.55's would get it done I would think
               
            • mbaird

              mbaird mbaird FABO Gold Member

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              I ran 12.30s in my 70 Charger using 3.55s.
              Full body and interior. 3900 lbs
              440-6
               
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              • Oldiron440

                Oldiron440 Well-Known Member

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                This says low tens arnt going to happen.
                 
              • 318willrun

                318willrun Stomper 4x4... we kept energizer in business

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                well, that's how I'd build it. I've seen enough to know what over gearing street 440's can do - slow it up.
                 
              • RustyRatRod

                RustyRatRod 30 Degrees Outta Whack FABO Gold Member

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                3.55s suck. 3.91s better. Wapner's on at 4.
                 
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                • 318willrun

                  318willrun Stomper 4x4... we kept energizer in business

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                  work till 9, home at 10 ???? LOL
                   
                • Ottmundr

                  Ottmundr 68 Fastback

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                  Rattlecan primer! Who needs paint?
                   
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                  • cojohnso

                    cojohnso Well-Known Member

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                    My 451 build.

                    400 Block with +.035 bore and prep. $600
                    B1/BS Heads/Valves moderate port $3500
                    Head gasket. $130
                    Cam w/lifters Smith Bros pushrods $450
                    Forged 440 MP crank cut for B-block.$300
                    Ross flatop pistons/rings $600
                    BME alum rods (great deal overstock) $500
                    (Rods normally $1200.)
                    Holley E-85 metered 1050 4150. $700
                    Victor 383 intake. $180
                    (alt, fuel pumps, start ect) $500
                    Bearings/gaskets $100

                    $7560 in just parts. Not including assembly. All for 600+HP. And this is hunting for deals. It adds up FAST! And I'm sure I missed something in list.
                     
                    Last edited: Aug 21, 2019
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                    • rumblefish360

                      rumblefish360 So close, yet so far away

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                      Oh yea, money into speed parts first!
                      74BB9CD0-601A-4B32-99A6-60DAA6E47626.jpeg
                       
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                      • mopar65

                        mopar65 Well-Known Member

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                        My 73 dart had a 93 pump gas 440 that you could drive on the street any time you wanted, except in the rain. Lol with the wrong torque converter and not much tuning, the car would run 10.60 in the 1/4 . That was also with a race weight of 3520 pounds. My friend that weights 100 pounds less than I do ran a few 10.49 in the 1/4. Those passes was with 4.30 gears and M/T 275/60/15 ET street radials. I think with the right converter, 4.10 gears and some tuning, I don't see why the car couldn't of ran some 10.20 or better. I am not sure what the fuel mileage was, never checked it. Lol
                         
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                        • 1970boy

                          1970boy Well-Known Member

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                          A lot of great information coming from this thread and I think I’ve come to my conclusion of what’s going to happen, it seems regardless of how I want to reach my goals it’s going to take minimum 10-15k to do it, I think I might go for a new engine and pick up a gen 3 hemi down the line and run twins, for now I think making in the ballpark of 450hp with the 340 would be a real fun car, the car is pretty quick as it is it’s kept up with a 2019 camaro with the LT1, plans would be build the 340 have fun with it for a bit then sell the 340 to fund the twin hemi build
                           
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                          • mbaird

                            mbaird mbaird FABO Gold Member

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                            You could build the 340 with a turbo friendly cam and pistons/compression then add the turbo stuff down the line as you can afford it. Much cheaper than building 2 engines.
                             
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