Originally Posted by LOWDOWN
Considering chassis dynos were not widely used until post-'69, I question this result...
That's more apt to be a Gross hp rating on an ENGINE dyno, if that result is from the '69 era. TRACO T/A-Series 302s were generally considered to make around 450 @ the crank, back in the day.
The dyno I found was of a current historic racer.