Originally Posted by digger
You're forgetting one important thing here.
Qualifying at that time was done in 3 sessions spread over the friday and saturday.
There were no engine restrictions in terms of max amount of engines used, so the engines used for qualifying were only meant to last one qualifying session at most.
And some (most at the early turbo times) didn't even make that and blew up.
These engines had an over 3 Atm boost and unlimited fuel supply so yes, in the end they made just about 1500 hp.
For the races the race-engine was highly detuned to last the 300km race distance, and these engines had an output of around 800hp, although that can not be verified
But compared to the performance of the NA opponents they must have been around that power level. "