Yes, definitely restrictive, but -45 HP less than the 383/325 HP
Big-Body 'Super Commando'.
No, Chrysler overrated the 383/325 HP 'H-Code' by a big amount.
Here is what the NHRA 're-factored' the 383 engines to back in the 1990's,
with the stock exhaust system.
A-Body
1967 - 383/280 HP...........255 HP
1968 - 383/300 HP...........280 HP
1969 - 383/330 HP...........294 HP
B-Body
1967 - 383/325 HP...........270 HP
1968 - 383/330 HP...........283 HP
1969 - 383/330 HP...........283 HP
Road Runner, Super Bee & Charger
1968 - 383/335 HP...........302 HP
1969 - 383/335 HP...........302 HP
