From Wiki:
The street Hemi version was rated at 425 bhp (316.9 kW)(Gross) with two Carter AFB carburetors. In actual dynomometer testing, it produced 433.5 horsepower and 472 lb·ft (640 N·m) torque in purely stock form.[4] Interestingly, Chrysler's sales literature[5] published both Gross and Net HP ratings for 1971 (425 Gross HP and 350 Net HP.)
My 1970 Hemi "Dyno'ed" at 452HP.
(NOT Chassis dyno)
I have the pic somewhere.
It is the "Stock" automatic cam.
(Chrysler factory spec lists the 727 Torqueflight at a 62HP loss)
The only MOD was the Hansen Stage V aluminum heads and of course headers on the Dyno.
So, yeah, 425HP rating +10% under-rated as most factory cars were listed as.
(Except FORD, listing the BOSS 429 at 375HP AND the 428 SCJ at 335HP)
- - - Updated - - -
I think my error in the original post was:
Specific to the "REAL" or "TRUE" factory race cars.
Again, a REAL 63 or 64 Max Wedge
Or, a Fairlane "Thunderbolt" or a "62 Pontiac Catilina Superduty 421"
They were not meant for street racing.
Getting back to the original post:
Old school rules in my book.
My point, new school muscle is awesome too, like me cruising to Scottsdale AZ on the I-10 480 miles one way to see family in my GT500.
Uh, lets see, Speed: 75
AC: On cold
XM/Sirrius radio: On
Leather seats: yup, comfy
In the lap of Luxury.
PS: I own the road in that thing.
I personally LOVE old-school, otherwise I would not have the cars I have.
PS: its all just my stupid opinion, sorry.