First off, ratings in the 60's were gross, not net. That changed in the early 70's to more accurately reflect what was put out at the crank with accessories (and exhaust) attached. There's about a 20% difference between the two. From what I understand, the game rates in net. If it rates in gross, well... that means my Ardent would put out 136 HP net, which would be reasonable from a 4.2L V8.
Second, 5 liter American V8's in the 70's were horribly anemic due to emissions equipment. For example:
1978 Chevy 305 w/4bbl - 160 HP, 235 lb-ft torque
1978 Ford 302 w/2 bbl - 139 HP, 250 lb-ft torque
1978 Dodge/Chrysler 318 (5.2L) w/2bbl - 145 HP, torque figure unavailable
1978 AMC 304 w/2 bbl - 150 HP, torque figure unavailable
The 200 HP rating is a bit of a nod to the fact that here in Automation we like our engines powerful. It's also to keep people from going too nuts with it, as it would be bloody historically inaccurate to simulate, say, a late 70's Thunderbird with 300 HP from the factory. Even the 400cid (6.6L) Ford used as the biggest optional engine only put out 160HP.
Edit: aaaand... Blasters beat me to it.
