A Muscle Car doesn't have to be the fastest thing on the road, and compared to the Italian & German stuff, I doubt they are..... it is a formula not speed or power thing ... Muscle Car is as far as I'm aware ... A two door car that seats at least 4 people, has a large V8 (not the biggest one in the world), and has sporting tones for a better word ... Get over the outright performance thing... although performance goes hand in hand with muscle cars, it is not it's absolute definer ..
1949 Oldsmobile Rocket 88
This one is probably the most frequently mentioned by experts when asked what the first muscle car was. Its 303 cubic inch V-8 could only muscle out 135 horse power, making it underpowered by later standards. It was the first time an American mainstream automaker had put a high compression, dual overhead cam equipped engine into a car for sale, though. It was also a new concept in that the engine, by contemporary auto design theory, would have been considered too large for the smallish car. It really was the catalyst (due to its success) that led to the escalation of engine power that would follow. For all these reasons, the 1949 Rocket 88 is named by many as the first muscle car.
he question of what car was the first muscle car will get different answers depending on the person being asked. Sure, there are some that will come up more often, but getting all the historians and aficionados to agree on one is not going to happen. Here are a few notable candidates, though.
1949 Oldsmobile Rocket 88
This one is probably the most frequently mentioned by experts when asked what the first muscle car was. Its 303 cubic inch V-8 could only muscle out 135 horse power, making it underpowered by later standards. It was the first time an American mainstream automaker had put a high compression, dual overhead cam equipped engine into a car for sale, though. It was also a new concept in that the engine, by contemporary auto design theory, would have been considered too large for the smallish car. It really was the catalyst (due to its success) that led to the escalation of engine power that would follow. For all these reasons, the 1949 Rocket 88 is named by many as the first muscle car.

Edited by ChaosWeaver, 16 December 2015 - 12:16 PM.