Good points Daniel_Jones,
There were some engines that were "de-rated" for a number of reasons.
I was primarily addressing the 351C that was installed our DeTomasos.
The 351C Boss was a great race engine.
Custom built engines can produce more horsepower and torque that the stock factory builds. There is a price to pay though ... It is usually reliability.
Most DeTomaso Pantera owners will change the cast iron intake manifold and carburator as well as the exhaust headers as minimum mods. I personally doubt that my engine, even with those changes as well as a quench head change and made over 300hp SAE NET.
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