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Thread: Oldstech Build thread... Oldsmobile V8 Power

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  1. #1
    Rocket Man
    Join Date
    Dec 2008
    Location
    Griffin
    Age
    39
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    1,241
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    Well, at 5:00pm on Feb 04, 2008. The CamarOlds with a 307 was put on the dyno. For 3 runs.
    I have to say I was disappointed but not really surprise.

    My dyno sheet doesn't quote my max hp/torque at what rpm. You have to look at the graph. Max hp on every run was around 4600rpm and max torque was around 3200rpm. He rev till 5,000rpm but the power was dropping off after 4600rpm anyways.

    Run 1 Max Power= 163.69 Max Torque= 215.75
    Run 2 Max Power= 166.00 Max Torque= 217.19
    Run 3 Max Power= 165.65 Max Torque= 218.08

    Run Conditions: 66.05 F, 29.50in-hg, Humidity 6%, SAE: 0.98

    The reason for the changes in number I was playing with the Air/Fuel Mixture screw. His machine said I was running lean. But we found out his machine was messed up.

    I believe I could get more power if, I installed a smaller carb (Im running a 670cfm holley now) A better cam. And a good tune up (at idle my tach will spike every so often think I need new wires)

    Now the stock 307 puts out 150hp and 250 ft lbs of torque. But the part ppls don't realize is them numbers are from the factory on a engine dyno. And on a RWD car you can lose 20-40% of power through the drivetrain. So really if you took a car with this engine stock to a chassic dyno it would put out around 105 rwhp and 175 ft lbs of torque. And I got 166 rwhp and 218 ft lbs of torque. And at the crank I would get around 215 hp and 310 ft lbs of torque

    And running a near perfect race at the track calculates to 14.80 @92MPH in the 1/4 mile. Assuming your race weight is 3400LBs.








    Last edited by OldsTech; 02-05-2009 at 09:21 PM.
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