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1974 Pontiac Trans Am 455 - Firebird Family Affair

The DeLaigle Family's Super-Fast Admiralty Blue 455 D-Port '74 Trans Am Sleeper
November, 2006
By Rocky Rotella
Photography by Thomas A. Demauro
1974 455 Trans Am Front
1974 455 Trans Am Rear
The same timeless Second-Gen... 
   
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1974 455 Trans Am Rear
The same timeless Second-Gen Firebird stance that hooked Woodstock, Georgia-resident Jay DeLaigle will continue drawing enthusiast attention for years to come.
1974 455 Trans Am Burnout
When new, one might expect... 
   
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1974 455 Trans Am Burnout
When new, one might expect a typical 455-powered '74 Trans Am to run the quarter-mile in the mid-to-high 14s, but this sleeper contains 12-second potential while retaining a number of original components.
1974 455 Trans Am Engine Bay Passenger Side
Under the cloak of a stock... 
   
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1974 455 Trans Am Engine Bay Passenger Side
Under the cloak of a stock 455 lies a 465ci engine with 10:1 compression, a hydraulic roller camshaft, ported 4X cylinder heads, port-matched intake and exhaust manifolds, and a modified Quadrajet carburetor. The combination churns out 380 hp and 464 lb-ft of torque on a chassis dyno.
1974 455 Trans Am Interior
Though the L75 455ci was only... 
   
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1974 455 Trans Am Interior
Though the L75 455ci was only available with a Turbo-400 during the '74 model year, the complete four-speed manual assembly was installed in the late-'80s. Future plans include reinstalling the automatic to maintain originality. The owner performed much of the interior restoration himself, which includes a new carpet from Auto Custom Carpets of Anniston, Alabama, and various pieces from restoration parts supplier YearOne. Denny Sanford of Atlanta Color Pros in Marietta, Georgia, redyed the original seat covers back to their off-white shade and installed new front-seat cushions onto the frames. Factory-installed options include air conditioning, Custom interior, power windows, rear defogger, AM/FM stereo, and console-mounted 8-track tape player.
1974 455 Trans Am Hood Scoop
A bit of stealth technology... 
   
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1974 455 Trans Am Hood Scoop
A bit of stealth technology was used when modifying the factory Shaker scoop. It may first appear that this T/A's Shaker is riveted shut like all others from '73 forward. But it actually contains a hinged air valve like that used on '70-'72 models, which allows the carburetor to ingest cooler outside air.

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1974 455 Trans Am Engine Bay 1974 455 Trans Am Jay Delaigle
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