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1978 Trans Am & 1973 Formula 400 - Birds For All Reasons

George Berg Bought Two Unique Firebirds, A '73 Formula 400 And '78 T/A, To Suit His Different Moods
By Thomas A. Demauro
Photography by Thomas A. Demauro
Pontiac Trans Am Formula400 Two Pontiacs
Pontiac Trans Am Formula400 Trans Am Backview
According to the owner, the... 
   
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Pontiac Trans Am Formula400 Trans Am Backview
According to the owner, the paint on this Trans Am is 10 to 15 years old, yet it recently won a Best Paint award. Note the modified exhaust, sans cat, with dual head pipes and mufflers in place of the factory dual resonators normally found on W72 cars.
Pontiac Trans Am Formula400 Formula400 Backview
Aside from the arresting hue,... 
   
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Pontiac Trans Am Formula400 Formula400 Backview
Aside from the arresting hue, an interesting option package on the '73 is the Body Protection Group (code-334/Y95), which included rear bumper guards, body side moldings, and door-edge guards. Optional roof-drip moldings (code-481/B80), wheelwell moldings (code-491/B96), and concealed wipers (code 432/C24) were checked off. Remember, the original purchaser ordered the car for his 64-year-old wife, so power disc brakes (code-502/JL2) and variable-ratio power steering (code-501/N41) were bolted in as well.
Pontiac Trans Am Formula400 Ta Front View
What's Starlight Black, equipped... 
   
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Pontiac Trans Am Formula400 Ta Front View
What's Starlight Black, equipped with W72 220-horse 400, a four-speed trans, Hurst n SE? George Berg's '78 Trans Am.
Pontiac Trans Am Formula400 Formula Interior
The standard version (code... 
   
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Pontiac Trans Am Formula400 Formula Interior
The standard version (code 62R1) of the Camel Tan Oxen vinyl interior with crank windows is not often seen on T/As of this era. Note the lack of a passenger-side assist bar on the dash and map pockets on the doors. Seat and door upholstery patterns also differ from that of the Custom interior available in 1978. The stock shifter knob has been replaced with a Hurst T-handle. Just a little over 78,000 miles shows on the odometer.
Pontiac Trans Am Formula400 Shaker Scoop
Pontiac wanted the world to... 
   
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Pontiac Trans Am Formula400 Shaker Scoop
Pontiac wanted the world to know it had a high-performance engine option in '78, so the Shaker scoop reads "T/A-6.6" for 220-horse W72-equipped models and "6.6 Litre" for 180-horse 400s and 185-horse Olds 403 T/As. This once-blocked Shaker now draws cool outside air. It's not stock, but George wouldn't have it any other way.
Pontiac Trans Am Formula400 T Tops
It was the last year for the... 
   
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Pontiac Trans Am Formula400 T Tops
It was the last year for the WY9-code Hurst Hatch option as Fisher (code-CC1) units bowed in partway through the sales season and ultimately replaced them. Bright trim (SEs had the trim blacked out) and the fact that the Hurst tops don't extend all the way to the rear of the window opening make them easily discernable from the later Fisher T-tops.
Pontiac Trans Am Formula400 Steering Wheel
For '73, the Custom Trim Group... 
   
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Pontiac Trans Am Formula400 Steering Wheel
For '73, the Custom Trim Group (code-724/Y90) added a trunk-fitted mat; body-colored inserts for the door handles; and custom interior appointments, including the passenger-side assist bar on the dash and upgraded door panels and seat patterns. Code 243 denotes the Custom Saddle Morrokide interior. This Formula has optional Rally Gauges With Tach (code-714/WW8), and the odometer reads 74,836 miles.
Pontiac Trans Am Formula400 Formula Engine
In comparison to the W72,... 
   
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Pontiac Trans Am Formula400 Formula Engine
In comparison to the W72, the code-YS, '73 L78 400 pumped out 230 hp. Though a Q-jet still mixed air and fuel, the cast-iron intake didn't feature the restricted secondaries of the '78. It has a points-type distributor instead of HEI, and the cam is an 066 with 273/282-degrees duration and 0.410/0.415 lift. Compression ratio is 8:1 for the '78 and the '73. The same style log manifolds carry spent gases from 4X heads with the same valve sizes, but the rest of the exhaust system is different. The '73 employs twin pipes that feed into a crossflow muffler behind the rear axle and end in twin tips; the '78 system (in stock form) has a y-pipe into a single cat converter, and then splits from the converter back into two pipes with twin resonators and tailpipes with splitters.
Pontiac Trans Am Formula400 Front Angle
Navajo Orange paint (code... 
   
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Pontiac Trans Am Formula400 Front Angle
Navajo Orange paint (code 97/U), the rarely seen Accent Stripes (code-631/D98), and Ram Air callouts on the hood of this '73 Formula 400 literally stop people in their tracks at shows. If those don't do it, the body's design does. "I love the front end," George says. "It reminds me of a Hammerhead shark."

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