Back in 1963, Pontiac offered the GTO as a package to add to the Pontiac Tempest, only in 1964 did the GTO become a fully-fledged model in its own right.
The name is supposedly inspired by the Ferrari 250 GTO (Gran Turismo Omologato – Grand Tourer Homologated). It’s also said that the Pontiac GTO was the daddy of the muscle car movement; many consider it to be the forerunner, but of course, you’ll have other brand enthusiasts arguing that!
1970 Pontiac GTO Design
We love the look of the classic GTO; it really does sum up the classic American muscle car that we’ve grown to love. Sure, most of the muscle car of that era used a simple formula – long, low, wide, loud and with a shouty V8, but the GTO just seems to have something a little extra.
For 1970, gone were the optional hidden headlamps, to be replaced by four round light units, although the Endura covered front end remained.
1970 Pontiac GTO Interior
As you’d expect from a muscle car of this era, vinyl and buckets were the order of the day. But the GTO did feel quite sporty on the inside, unlike many of its competitors that merely took a normal car and lumped a large V8 into it. The GTO felt special once ensconced within it.
1970 Pontiac GTO Specs
Number produced (1970): 32,737 Curb Weight: 3,641 lbs, Length: 202.9” Wheelbase: 112”
Available as a 2-door convertible or hardtop coupe.
Variable ratio Power Steering option, VOE (Vacuum Operated Exhaust) was also optional, although only 233 vehicles were ever fitted with this option.
1970 Pontiac GTO Performance
Pontiac dropped the low compression, ‘economy’ engine from the line-up, but there were still four choices, of course, all V8: 400 ci (6.5 liter) 350 BHP, 400 ci Ram Air III 366 BHP, 400 ci Ram Air IV 370 BHP and the 455 ci (7.4 liter) 360 BHP.
As mentioned, Pontiac offered the VOE option which gave a vacuum switch to reduce backpressure in the exhaust, in theory giving more performance but the increase in noise probably outweighed the performance.
Transmissions were 3 and 4 speed manual or a three speed auto.
1970 Pontiac GTO Collectability and Price
The GTO is a popular model, even more so for the 1970 version and if you can find one with the VOE system factory fitted, you really do have something rare.
Expect to pay in the region of around $65,000 for a concours example, but you can pick up an average condition one for about $25,000 – not cheap by any standard, but you’re pretty much guaranteed that the price will increase.