Trans Am KwikFacts

YearKwikFact

1970

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First Year of Second Generation Trans Am Body Style

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Total Production - 3,196

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Two Colors - Lucerne Blue and Polar White

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Only Year Offered with Low Back Bucket Seats

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Two Engines - 345 hp RA III & 370 hp RA IV 400 CID V8'S

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Only Year with 12-bolt GM rear axle

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No engine displacement callouts on the Shaker

1971

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Total Production - 2,116

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Engine displacement grows to 455 CID

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Lower compression ratio results in 335 hp (310 hp net)

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Only one engine offered

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High back bucket seats introduced along with "bucket" type rear seats

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Trim Rings Offered on Rallye II Wheels

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"Honeycomb" Polycast Wheels offered

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GM 10-bolt axle replaces the 12-bolt

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A 3-speed manual transmission is offered

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455 H.O. engine callouts are added to the shaker

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Cameo White replaces Polar White

1972

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Total Production - 1,286

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455 H.O. horsepower drops to 300 (net)

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Last year for the functional shaker hood scoop

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Last year for center stripe graphics

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Polycast wheels now have Pontiac crest in center cap

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Grille was changed to an elongated honey comb appearance

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The GM-UAW strike of 1972 left 2,100 uncompleted Firebirds & Camaros on the assembly line that had to be scrapped

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1973

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Total Production - 4,772

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The 455 H.O. engine is discontinued in favor of an new high performance variant, the Super Duty 455

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The SD-455 was originally rated at 310 net hp, but a camshaft brought about by "irregularities" in Pontiac's EPA testing lowered the horsepower to 290

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Lucerne Blue was out; Brewster Green and Bucaneer Red were in as exterior colors

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The "screaming chicken", the popular nickname given to the new for '73 Trans Am optional hood decal debuts, with a more subdued nose decal of the same basic design being standard

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The base 455 engine drops to 250 hp

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Radial tires are available on the Trans Ams in a GR70x15 size, supplementing the standard F60-15 bias ply tires. The new radials are offered in blackwalls or (gasp) whitewalls!

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The front bumper, although nearly identical in appearance the previous models, more mare robust in response to new federal bumper standards

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1973 would be the last year for a chrome rear bumper and the larger two segment taillamps

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The shaker scoop, was now non-functional, being sealed by a block off plate because of "noise emissions"

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1974

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Total Production 10,255

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All-new front & rear appearance

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The front end now was made of firbeglass and had a rubber coated bumper bar

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The front spoiler was cut down severly

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The rear tail lamps lost the chrome bezels and became a multi-segmented unit

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The 400 returned as the standard engine, but was now rated at 225hp

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Two 455's were optional, the 250hp base and the 290hp SD-455

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1974 Was supposed to be the last year the 455 engine would be offered

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The TurboHydramatic 400 and Muncie "Rock Crusher" were not offered after 1974

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The small nose bird decal was no longer available, replaced by a Firebird emblem

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A precurser to the 1976 50th Anniv. T/A was shown at the 1974 Chicago Auto show, but not offered to the public

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1974 was the last year for true dual exhausts

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1975

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Total Production 27,274

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Last year's front end was modified by moving the parking lamps to the grille

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All-new rear window featuring a larger area

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The 455 disappeared at the beginning of the model year and returned in the spring

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The 455 was dubbed 455 H.O. but was no different than the engines offered in Safari Wagons

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The 455 engine included metalic front disc brake pads

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Chrome "side splitter" exhaust pipes were part of the 455 H.O. Package

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All 455s were 4-speeds

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All cars now had the catylitic converter and a single exhaust system with two tailpipes

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1976

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Total Production 46,704

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An all new front an rear appearance featured more integrated front an rear bumpers

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The 455 really disappeared after the 1976 model year

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A 50th Anniversary model, available with or without Hurst Hatches was offered. This car was similar to the 1974 Chicago Auto Show show car. 2,590 were built

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The polycast wheels were last offered in 1976

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1976 was the last year for round headlamps

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1976 was the last year an All-Pontiac engine line-up was offered

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The Firebird emblem was still on the nose; in subsequent years this was replaced with the Pontiac crest

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...to be continued

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