Big Bore gains

Discussion in 'The Garage' started by blackfang, Jan 29, 2006.

  1. blackfang

    blackfang Well-Known Member

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    Thanks to Naz from Modular Depot for doing the legwork on his engine. Here are the gains from his 304 Big Bore.
    This is the HP Data, broken down by RPM NEW COMBO GAINS HP/TQ:

    RPM GAIN HP GAIN TQ
    2000 12.069 31.85840708
    2100 13.1418 32.81710914
    2200 14.2146 33.92330383
    2300 15.0192 34.21828909
    2400 16.092 35.17699115
    2500 16.8966 35.69321534
    2600 16.8966 34.14454277
    2700 17.2989 33.62831858
    2800 19.1763 36.0619469
    2900 21.456 38.86430678
    3000 23.6016 41.2979351
    3100 25.479 43.14159292
    3200 26.6859 43.73156342
    3300 27.2223 43.36283186
    3400 28.0269 43.28908555
    3500 28.4292 42.77286136
    3600 29.6361 43.21533923
    3700 31.2453 44.1740413
    3800 31.9158 44.02654867
    3900 33.3909 45.05899705
    4000 34.3296 45.13274336
    4100 34.4637 44.10029499
    4200 35.0001 43.73156342
    4300 36.6093 44.54277286
    4400 38.0844 45.50147493
    4500 37.6821 44.02654867
    4600 37.9503 43.28908555
    4700 37.6821 42.03539823
    4800 37.4139 40.92920354
    4900 39.5595 42.40412979
    5000 43.5825 45.79646018
    5100 48.276 49.77876106
    5200 49.7511 50.22123894
    5300 50.4216 49.92625369
    5400 52.299 50.81120944
    5500 53.64 51.32743363
    5600 54.3105 50.95870206
    5700 55.7856 51.47492625
    5800 58.1994 52.72861357
    5900 59.6745 53.17109145 Peak Gains
    6000 58.1994 50.95870206
    6100 57.3948 49.4100295
    6200 55.5174 47.12389381
    6300 54.8469 45.64896755
    6400 54.8469 44.98525074
    6500 53.2377 42.99410029
    6600 53.64 42.62536873
    6700 53.7741 42.10914454
    6800 53.1036 41.00294985
    6900 52.0308 39.60176991
    7000 51.3603 38.56932153
    7100 51.3603 37.97935103
    7200 50.8239 37.02064897
    7300 454.7331 327.1386431 Notice:450+RWHP from 73-7600RPMs on BB!!
    7400 453.9285 322.1238938
    7500 452.8557 317.1091445
    7600 451.7829 312.1681416

    Other Details:
    AVE HP Gain thru RPM Band: 39.2835
    AVE TQ Gain thru RPM Band: 43.8918
    Gain @ Last Peak: 50.82HP/43.73TQ
    Gain @ New Peak: 51.36HP/45.50TQ
    Dyno Correction Factor: 1.003

    Full info
    http://svt4u2try.com/tmp/Naz_DynoInfo.xls
     
  2. 19clearcobra96

    19clearcobra96 Active Member

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    good info
     
  3. blackfang

    blackfang Well-Known Member

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    He has one of the top 5 highest rwhp in a all motor 4v at over 450 rwhp.
     
  4. CY98Cobra

    CY98Cobra Member

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    I don't think the Big Bore alone created those gains. If I'm not mistaken he has FR500 heads and intake and aftermarket cams. While there's no doubt big bore is going to help, it won't provide gains like that on a stock or bolt on car (if that is what you're trying to imply, not really sure).

    And NAZ is not a part of modular depot. He lives in Germany. I do believe they assembled his motor though.
     
  5. ForcFed93

    ForcFed93 Well-Known Member

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    He had the FR500 equipment before his Big Bore shortblock. I think everything else was the same, maybe he added a JLT as well, not sure.
     
  6. blackfang

    blackfang Well-Known Member

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    He had those before the big bore kit. I know he is in Germany, but MD is where he posted the info.
     
  7. Lightning Struck

    Lightning Struck Well-Known Member

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    there is as many info threads on here as any other web site that has been on-line for the past year. :thumb: