DeTomaso Mailing List: March 99, Message #162

>one - whether a '71 engine is a lot stronger than a '74, assuming both are
>relatively stock (any figures for hp for the different years?); and: 

The '71's had the benefit of the higher compression quench heads
but had a weak camshaft.  The later engines had lower compression
open chamber heads and dished pistons but had the stronger CJ 
cam (installed 4 degrees retarded in later engines for emissions)..
The figures are not directly comparable because of the ratings 
method change - gross (300 hp) versus net (266 hp).  Of course,
it's no big deal to swap heads and most Pantera engines are not 
stock anymore.  

Dan Jones