Had to dig out my NHRA Stock Car Classification Guide and see how they compared. Both of my sheets are dated 1971.
1970 Dodge Dart Swinger 340 275 horsepower 10.11 pounds/horsepower. 3133 pounds.
* Today, automatics are factored 10.48, stick 11.15.
1970 Plymouth Duster 340 275 horsepower 10.17 pounds/horsepower. 3109 pounds.
* Today, automatics are factored 10.40, stick 11.07 pounds/horsepower.
I believe NHRA uses shipping weights.
That means Darts were rated at 310 hp in 70 and Dusters were rated at 306 hp. Today it's 299 for automatics, 281 for sticks, same for both brands.
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John Brown
This isn't rocket surgery.....
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