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Old 08-28-2016, 10:49 PM   #1
HP HUNTER
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Join Date: Feb 2012
Location: Colorado Springs Colorado/Thousand Oaks Ca
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Default 1971 Buick 455 GS F/SA G/SA Build

A few years back I bought a 1971 Buick GS 455 stocker 315/330 HP. After taking delivery of the car I rebuilt the rear suspension, changed the fuel system, rejetted the carb, put on fresh tires and headed for the track. I was surprised when the car ran 11.35 on a 11.85 index (F/SA) on a 2130 foot track with a 27.80 baro in July 4500 DA, although the car was 135 pounds light for F/SA. I put the car away for a few years but couldn't help but think the car had potential if the engine was legal. This last week I got the car out of the garage and pulled the engine and put it on the dyno, then a tear down to determine what I was working with. I will post pictures of my engine build as I go, I will be looking for 30 extra HP out of the engine, if I can get that I will then look very hard at the drive line. I can't help but think if I can get a few hundred more RPM peak out of the engine I can then gear up to a 4.30 gear with more converter. Any advice or information on this build will be appreciated. Dyno test as the engine was pulled from the car.
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Last edited by HP HUNTER; 08-28-2016 at 11:06 PM.
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