Free Web Hosting Provider - Web Hosting - E-commerce - High Speed Internet - Free Web Page
Search the Web


SD-455 Trans Am
  Home Page | About My Site | Contact Page | Favorite Links Page | Awards and Webrings | Muscle Car Pics | 80's Muscle | New Age Muscle Cars | SD-455 Trans Am | Cobra | 1996 Impala SS | Hurst Olds | Lets Burn Rubber | Guest Book | Coming Soon Ram Air V Trans Am | Monthly Feature Muscle Car 1970 Buick GSX | Crown Victoria 5.0  

SD-455 Trans Am
In 1973, Pontiac released a limited production engine known as the Super Duty 455 (SD 455).
The engine was optional in '73 and '74 Formula Firebirds and Trans Ams.

The SD-455 was a race bred engine that featured a special heavy duty block, forged pistons,
four bolt main caps, a provision for dry sump oiling, round port heads that are known as the best flowing production Pontiac heads,
"header" style ram air exhaust manifolds, and an 800 cfm carb.

Original SD-455 cars are valuable collectibles today.
Production figures for 73 are: 252 Trans Ams-180 automatics and 72 4-speed,
43 Formula Firebirds-33 automatics and 10 4-speeds.
Figures for 74 are:943 Trans Ams-731 automatics and 212 4-speed,
58 Formula Firebirds.
During the motors 2 year production run Pontiac only made 1296 Super Duty cars
total which makes them very rare and desireable cars today.

1973 SD-455 Trans Am
The top car is a buccaneer red 73 SD-455 Trans Am it features rally II wheels and the optional hood bird.
The bottom car is a cameo white 73 SD-455 Trans Am
it features rally II wheels and the optional hood bird.
   Specs
1973 Trans-Am SD 455

Engine
Type: V-8, water-cooled, cast iron block and heads, 7 main bearings
Bore x Stroke: 4.15 x 4.21 in
Displacement: 455 cu in
Compression: 8.4:1
Oil Pressure:80 psi.
Carburetion: 1x4-bbl Rochester Quadrajet 800cfm
Valve Gear: Pushrod operated overhead valves, hydraulic lifters
Power: 310 bhp @ 4000 rpm
Torque: 390 lbs-ft @ 3600 rpm
Dimensions and Capacities
Wheelbase: 108.0 in
Track - F/R: 61.6/60.3 in
Length: 192.1 in
Width: 73.4 in
Height: 50.4 in
Ground Clearance: 4.2 in
Curb Weight: 3854 lbs
Weight Distribution - F/R: 58.4/41.6%
Suspension
F: Ind. unequal-length control arms, coil springs, anti-sway bar
R: Rigid axle, semi-elliptic leaf springs, anti-sway bar
Steering
Type: Recirculating ball, variable ratio power assist
Turns lock-to-lock: 2.4
Turning circle: 36.5 ft
Brakes
F: 11.0 in vented disc, power assist
R: 1.9x9.5 in cast iron drum, power assist
Wheels and Tires
Wheel Size: 7.0x15 in
Tire Type: Radial ply, steel belted
Inflation Pressure: 24 psi
Performance
Zero to
30 mph 2.2 seconds
40 3.1
50 4.1
60 5.2
70 6.7
80 8.0
90 10.4
100 12.8

Standing 1/4-mile: 13.54 sec @ 104.29mph (HOT ROD 6-73)
Top Speed: about 165 mph
Skidpad .86g


Click here to see a picture of a Brewster Green 73 SD-455 Trans Am


Click here to see a picture of a Buccaneer Red 73 Super Duty Trans Am

SD-455 engine


Colors for 1973
1973 PONTIAC TRANS AM PAINT COLORS+CODES
COLOR--CODE
Buccaneer Red*--75
Cameo White--11
Brewster Green*--48

*=new for 73





Valve Cover Decal For SD-455