1970 Buick GSX Stage 1 runs 13.66 at 100MPH "stock"

Discussion in 'OT Driven' started by Buick Muscle, Dec 1, 2003.

  1. Buick Muscle

    Buick Muscle Guest

    Whoever thought that "'Fast with Class" was just a gimmick.

    http://www.hemmings.com/index.cfm/fuseaction/dealers.detail/hmn_vehicle_id/201929

    We actually got some new magazines in today out here, and one of the issues was "Car Crafts" 50th Anniversary issue. In one of the features, they actually had a complete reprint of the original drag test for a factory stock 1970 Buick GSX. It came with a special 455 Cubic Inch engine, Hood mounted Tach, Rallye style steering wheel, GSX ornamentation, and power front disk brakes with a 3:62 axle ratio.

    The car was rated at 360 HP and 510 lbs/torque. Options came with a 3 or 4 speed manual or a 3 speed automatic.

    Running the car fresh from the GM tech center, it netted a dissapointing 14.28 at 99.77 MPH. Traction wasn't an issue for this huge car. RPMs was. The 3:63 axle was compromising the car in a big fashion, causing the big Buick to loaf through the finish line at a meager 4650 RPM, instead of the optimal 6200 RPMs'. Even so, they staff opted to mount some 29'' Firestone slicks and give the car another go around.

    After bogging the first lauch, the car netted a 14.01. They brought it back to the line, stomped the brakes hard and held the gas to a 2,000 RPM readout, as much they could hold the engine before the rear-end started to walk out. Letting go, they blasted off to a 13.86.

    After some experimenting with tire pressure and shift points, the best e.t. of the day was a 13.66 at 100MPH. The big engine was just being compromised by the meager 3:62 gearing.

    While the staff was not exactly estatic about the results, they were starting to believe the stories about the "12 second stocker from Buick" Good gears would have definetly helped, and the fact that Buick did offer a 4:78 axle ratio did very little to quell any thoughts of a true 12 second factory car. Talks with Buick officials resulted in tales of accomplishing 12.80 ETA's with the gears. Other talks with West Coast Buicks who were running mildly modded while tuned to the specs that came recommended in the owners manual were sporting 12.0 and 12.2 ETA's with just a cam, headers, and slicks.
     
  2. Possum Stomper

    Possum Stomper The Great Bird of the Galaxy

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    :cool: love GSX's
     
  3. TriShield

    TriShield Super Moderator® Super Moderator

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  4. matt_c

    matt_c Guest

     
  5. Possum Stomper

    Possum Stomper The Great Bird of the Galaxy

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    got any other perf numbers for old cars?
     

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