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1970 Thunderhawk 1400

6. 1970 Thunderhawk 1400

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6. 1970 Thunderhawk 1400
Transom and Motor Leg - The transom height is 18-3/4 inches instead of the industry standard 20 to 22 inches, too high for a short shaft motor and too low for a long shaft motor. So, the 5 inch long motor leg spacer was shortened to 2-1/2 inches. Chrysler made a special length drive shaft for me. This positions the cavitation plate about 1/2 inch below the bottom of the keel at the transom as it should be for optimum performance. The prop is a Chrysler P273-265, 10-3/8 x 13-1/2, 3 blade, aluminum prop. With this prop, and two adults in the boat, the boat easily planes quickly and top speed is about 40 mph. I also have the original standard P293-265, 10-3/8 x 12-1/2, 3 blade, aluminum prop for it which might be more appropriate for pulling a skier. Additionally, I have a P290-265, 10-3/8 x 14-1/2, 3 blade, brass prop found on eBay which I am now too old to try. To see the step handle when viewing in the slideshow mode press the [Tab] key to toggle this text window On/Off. You may have to click on the text window to enable the toggle function.
Posted by Kent on April 8, 2017 Full Size| Slideshow

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