Editing Pontiac Tempest (section)

==Second generation (1964–1967)==
{{Infobox automobile
|name = Second generation
|image = 1965 Pontiac Tempest 2-door black.jpg
|caption = 1965 Pontiac Tempest LeMans Hardtop Coupe
|model_years = 1964–1967
|assembly       = (Main Plant)
{{unbulleted list 
| [[Pontiac Assembly]], Pontiac MI, US
<br />(Branch Assembly, US)
| [[Baltimore Assembly]], Baltimore, Maryland
| [[Framingham Assembly]], Framingham, Massachusetts
| [[Fremont Assembly]], Fremont, California
| [[Leeds Assembly]], Kansas City, Missouri
}}
|class = [[Mid-size car|Mid-size]]
|layout = [[FR layout]]
|transmission = 2-speed automatic<br/>3-speed automatic<br/>3-speed manual<br/>4-speed manual
|platform = [[GM A platform (RWD)|A-body]]
|body_style = 2-door [[coupe]]<br />2-door [[hardtop]]<br/>2-door [[convertible (car)|convertible]]<br/>4-door [[Pontiac Safari|Safari]] [[station wagon]]<br/>4-door [[Sedan (car)|sedan]]<br />4-door [[hardtop]]
|engine = [[Pontiac straight-6 engine#Overhead Valve|215 cu in (3.5 L) I6]]<br/>[[Pontiac straight-6 engine#Overhead Cam|230 cu in (3.8 L) OHC I6]]<br/>[[Pontiac V8 engine#326|326 cu in (5.3 L) V8]]<br/>[[Pontiac V8 engine#389|389 cu in (6.4 L) V8]]
|related = [[Chevrolet Chevelle]]<br/>[[Oldsmobile F-85]]<br/>[[Buick Special]]
| wheelbase = {{convert|115|in|mm|sigfig=4|abbr=on}}
| length = {{convert|203|in|mm|sigfig=4|abbr=on}}
}}

In 1964, the Tempest was redesigned as a more-conventional vehicle and enlarged from a compact to an intermediate-sized car with a {{convert|115|in|mm|abbr=on}} wheelbase and an overall length of {{convert|203|in|mm|abbr=on}}. The unibody, curved driveshaft and transaxle were gone, replaced by a traditional front engine, front transmission, body-on-frame, and solid rear axle design used by all of GM's other cars but the Corvette and Corvair. Together with its sister cars (the [[Oldsmobile F-85]]/[[Oldsmobile Cutlass|Cutlass]] and [[Buick Special]]/[[Buick Skylark|Skylark]]), the Tempest/Le Mans moved to the new [[GM A platform (RWD)|A platform]] shared with the new [[Chevrolet Chevelle]], and all three cars received updates and modifications standardizing them throughout—including the wheels—by GM edict. The cars were, in ascending order, base Tempest, Tempest Custom, and Le Mans.
[[File:1964 Pontiac Tempest Custom (27530266690).jpg|left|thumb|1964 Pontiac Tempest Custom Safari]]
[[File:65 Pontiac Tempest Custom (7130031417).jpg|left|thumb|1965 Pontiac Tempest Custom 4-Door Sedan (with after-market wheel covers)]]
[[File:1965 Pontiac Tempest Custom (14481297132).jpg|left|thumb|1965 Pontiac Tempest Custom Safari (with after-market wheels)]]
[[File:Red Pontiac at Power Big Meet 2005.jpg|left|thumb|1966 Pontiac Tempest]]
Replacing the previous "Trophy 4" inline four-cylinder engine as standard equipment was a new {{convert|215|cuin|L|1|abbr=on}} [[Pontiac straight-6 engine#215|Pontiac straight six]] with one-barrel carburetor and {{convert|140|hp|kW PS|0|abbr=on}}. This six was basically a smaller bore (3.75") version of the {{convert|230|cuin|L|abbr=on}} Chevrolet straight-6, offered as a Pontiac exclusive. This is one of the earliest "Corporate Engine" arrangements General Motors utilized.

Optional engines included two versions of the {{convert|326|cuin|L|1|abbr=on}} Pontiac V8 introduced the previous year: a two-barrel {{convert|250|hp|kW PS|0|abbr=on}} regular fuel option; or the {{convert|280|hp|kW PS|0|abbr=on}} 326 HO engine with four-barrel carburetor and 10.5:1 compression ratio which required premium fuel. Transmissions included a standard three-speed [[Manual transmission|manual]] with column shift, four-speed manual with floor-mounted Hurst shifter or a two-speed automatic; the latter was a version of Buick's [[Super Turbine 300]].

The popularity of the high-performance 326/336 V8 in the Tempest-based LeMans package the year before prompted Pontiac to give the option a special, sporty name: the [[Pontiac GTO|GTO]], after the Italian abbreviation "Gran Turismo Omologato" used to designate specially equipped street cars [[homologated]] for racing (though the opposite, producing a mandated minimum of street-legal race cars to meet the homologation requirement, is the norm). Available with Pontiac's largest V8, the {{convert|389|cuin|L|1|abbr=on}}, and equipped with a four-barrel carburetor (producing {{convert|325|hp|kW|0|abbr=on}} or the soon to become iconic {{convert|345|hp|kW|0|abbr=on}} 3 x 2 barrel [[Tri-Power]] set-up, the GTO proved to be the defining [[muscle car]] of the 1960s. Unlike other 1964 Tempests, the GTO was available as a pillarless [[hardtop]] coupe.

Unsurprisingly, the success of the GTO prompted Oldsmobile to rush out its own high-performance option package for the F-85/Cutlass called the [[Oldsmobile 442|442]], and the next year for Buick to release a high-performance version of the Skylark called the Skylark [[Buick GS|Gran Sport]], or GS. Both cars would enjoy success and join Chevrolet's [[Chevrolet Chevelle#Chevelle SS|Chevelle SS]] in GM's effort to capitalize on the exploding muscle car era.

Engine offerings for the 1965 Tempest were the same as 1964, except the 326 HO was uprated to {{convert|285|hp|kW PS|0|abbr=on}} and the GTO 389's uprated to {{convert|335|hp|kW|0|abbr=on}} and {{convert|360|hp|kW|0|abbr=on}} via higher rise intake manifolds. Styling changes included a new split grille with vertical headlights similar to the larger Pontiacs, revised taillights and a more slanted rear deck. A two-door hardtop [[coupe]] was added to the Tempest Custom line, while the Le Mans got a four-door sedan with a plush interior done in Preston Cloth trim similar to the full-sized Bonneville Brougham.

A major facelift was made on the 1966 Tempest that included more rounded bodylines with a Coke-bottle effect similar to the full-sized Pontiacs. New four-door pillarless hardtop sedans were added to the Tempest Custom line. Under the hood, the Chevy-derived 215 six was replaced by a new {{convert|230|cuin|L|1|abbr=on}} [[Pontiac straight-6 engine#Overhead Cam|Pontiac overhead cam six]], the only such engine found in an American production car at that time. This was also the first American-built engine to use a [[Timing belt (camshaft)|belt]] to time the [[camshaft]] to the [[crankshaft]] rather than a chain. The base OHC had a one-barrel carburetor and was rated at {{convert|165|hp|kW PS|0|abbr=on}}, designed for economy buyers. Optionally available as part of the Sprint option package on non-wagons was a four-barrel, high-compression {{convert|207|hp|kW PS|0|abbr=on}} version of the OHC six, marketed as an alternative to higher-priced European sport sedans, which had similar OHC engines. For those wanting V8 power, the 326 and 326 HO options continued with horsepower ratings of 250 and {{convert|285|hp|kW PS|0|abbr=on}}, respectively, and GTO engines stayed the same.

Only minor changes were made to the 1967 Tempest, Custom and Le Mans models. The GTO 389 V8 was replaced by a new [[Pontiac V8 engine#400|400 cu in V8]]. The Rochester four-barrel carburetor replaced both the standard GTO Carter AFB four-barrel and the Tri-Power carburetor option. The Turbo Hydromatic TH-400 replaced the previous Buick Super Turbine two speed automatic. The 326 cu in V8's remained unchanged. The four-barrel OHC six was uprated to {{convert|215|hp|kW PS|0|abbr=on}}. Front disc brakes were a new option along with a stereo 8-track tape player and hood-mounted tachometer. All 1967 Pontiacs got GM's safety package, mandated by Federal law, which included a dual-circuit braking system, energy absorbing steering column, wheel, and interior, shoulder belt anchors, four-way hazard flashers, and a new directional signal control that could be "flicked" for lane changes.
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