Al Unserâs qualifying speed of 183.53 mph in car 046 is corrected to 184.34 mph. The rpm spread from minimum to maximum averaged about 550 rpm, which is about the same as in the September test, even though the lap speeds were higher.The ends of the exhaust pipes on the new car were cut parallel to the centerline of the car. These four carburetors will be compared on the engine from the car on the dynamometer to give accurate values. In addition to the bars in the engine compartment there are other factors that may affect the handling of the new car compared to car 046. The corrected best speed obtained on car 046 in September was 189.02 mph (186.18 mph observed). For one test short extensions were welded onto the pipes to give ends that were perpendicular to the pipes. This change reduced the lap speed by .61 mph. ClassicCars.com's first-class Customer Support team with a Stevie Bronze Award in 2019, celebrating the team's skills as exemplary customer support specialists. Set an alert to be notified of new listings. On car 046 the air for the oil cooler came in through this same opening, while on the new car the oil cooler air comes in through the left inboard headlight opening. The effects of these individual items are covered in detail in the discussion. With the new car he found the car very easy to drive at all speeds including the maximum, even with considerable wind. There were also differences in weather conditions between the two tests.A correction factor has been developed that appears to make a rather good correction for weather differences, so to remove this variable, all of the speeds and speed differences will be given corrected to 29.92â Hg [inches of mercury] dry air and 60°F unless otherwise stated.
The speed loss was .38 mph and .24 mph for the two tests. Eric's Muscle Cars is honored to offer this ULTRA RARE COLLECTIBLE to the Classic Car Market for th
The corrected speeds are representative of speeds that should be obtained with weather conditions that were encountered during the first week of practice in February 1968. 1968 to 1970 Dodge Daytona for Sale.
The axle ratio change resulted in an increase of about 300 rpm across the board, and apparently reduced the average engine power output over the speed range. The body shells of both cars were 1969 Charger 500s with the fastback backlight. An approximate breakdown of this difference is:With the exception of the underbody angle each of these differences was evaluated in a separate test. There are many other differences between the 1968 and 1969 race cars that may have an influence on the improved handling of the 1969 design.The basic aerodynamics of the Charger 500 continues to be very good. There has always been a question as to how many horsepower it takes to increase the lap speed one mph at Daytona.
A series of tests was run to determine the effect of changes in engine power to lap speed, and preliminary results indicate that in the 190 mph range it takes 17.5 horsepower to increase the lap speed one mph. For the simpler conditions of drag racing, a satisfactory correction factors was developed for barometer, temperature and humidity several years ago.
Set an alert to be notified of new listings. Blocking the grille and reducing the opening below the bumper reduces the drag of the car by about 14%, or is equivalent to about 77 HP. The corrections are all made to 60°F and 0 humidity. For the first day of qualifying for the July race the correction factor was 1.0168, so that Charlie Glotzbachâs pole winning 185.16 mph is corrected to 188.27 mph, an increase of 3.11 mph. The performance of the car is superior to the 1968 Fords and Mercurys … Lee Roy Yarbroughâs fastest qualifying time of 187.05 mph is corrected to 190.19 mph.
When the correct engine data is available a more detailed analysis will be made. The first use of the Daytona name on a car was on a version of the Studebaker Lark.
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