As Trans Am titles in 1968 and '69 the muscle car showed, the Z28 was a road-racer first, a street machine second. In GTE form and fitted with a six cylinder engine, it was able to match the Fords for performance. Ford's larger, more luxurious Fairlane was also available with these engines and could also be optioned with the 300 bhp (224 kW) 351 cu in (6 L) "Cleveland" engine. Ford Falcon Cobra 351 V8 General Motors Holden produced the famous Holden Monaro with the muscle car 161 cu the muscle car in (2.6 L), 186 cu in (3 L) (186 and 186S specification) 6 cylinder engines, 307 cu in (5 L), 327 cu in (5.4 L), and 350 cu in (5.7 L) Chevrolet smallblocks and later 253 cu in (4.1 L) (really 4.2L but formula doesn't seem to work here) and 308 cu in (5 L) Holden V8. In 1972, the government stepped in to ban supercars from the streets after two notable cases. Sunoco 260, Esso Extra, Chevron Custom Supreme, Super Shell, Texaco Sky Chief, Amoco Super Premium, the muscle car Gulf No-nox) until the passage of the Clean Air Act of 1970 where octane ratings were lowered to 91 - due in part of the removal of tetraethyl muscle car classifieds lead as a valve lubricant.

The torque figure was equally prodigious—430 pound-feet at a lazy 3600 rpm. (Ford claimed 0-60 in less than 6 seconds for the similarly-powered 1966 Galaxie 500XL 427.)[7] Road-legal drag racer: with 427 V8 in lightened midsize Ford Fairlane body Another Ford lightweight was the 1964 Ford Thunderbolt that utilized the mid-size Fairlane body. [The] all-new ohv V8...Rocket engine quickly found its way into the lighter 76 series body, and in February 1949, the new 88 series was born."[10] The article continued: "Walt Woron of Motor Trend enjoyed the 'quick-flowing power...that pins you to your seat and keeps you there until you release your foot from the throttle [...] Olds dominated the performance landscape in 1950, including wins in the NASCAR Grand National division, Daytona Speed Weeks, and the 2100-plus-mile Carrera Panamericana. Kismet. The "wood"-rim steering wheel is $39, and from there the muscle car on in, it's trimming the window with fuzz (like $36 for custom wheel covers).

They felt, as we did, that Pontiac was swiping a name to which it had no right. Although the article pointed out that the GTOs that were tested were only "mildly" prepped by Royal Pontiac, no other magazine or customer could match those test numbers with stock GTOs. After extensive testing, Car and Driver declared that "Ferrari never built enough camero muscle car GTOs to earn the name anyway -- just to be on the safe side though, Pontiac built a faster one." The "official" test muscle cars classics times were unbelievable: 0-60 in 4.6 seconds and the quarter mile in 13.1 seconds @ 115 mph. .