1973 PONTIAC GTO

 

PRODUCTION

2dr Coupe

494

2dr Sport Coupe

4,312

TOTAL

4,806

 

 

PRODUCTION BY ENGINE/TRANSMISSIONCOUPE

400 c.i. 230hp manual trans

187

400 c.i. 230hp auto trans

282

455 c.i. 250hp auto trans

25

TOTAL

494

 

 

SPORT COUPE

400 c.i. 230hp manual trans

926

400 c.i. 230hp auto trans

2,867

455 c.i. 250hp auto trans

519

TOTAL

4,312

 

 

GM's "A" body intermediates were restyled for 1973 and so too was the LeMans. The GTO, as in 1972, was an option package available on the 2-door LeMans and 2-door LeMans Sport. On the base line LeMans, there was a rear quarter window but on the Sport model there were vertical louvers covering the window.

GTO identification consisted of a GTO emblem on the blacked-out grille, a GTO decal on the rear deck and GTO 400 or GTO 455 decals, depending on engine, on the front fenders behind the wheelwells.

All GTOs came with two NASA style scoops on the hood, which could be made functional if the Ram Air option was ordered. Less than 10 were so ordered. In the interior, there was a small GTO plate located on each door panel. Bucket seats were standard with a bench seat optional.

The GTO came with firmer springs and shock absorbers and a one-inch rear anti-sway bar. Standard brakes were 9.5" drums with 11 inch front power discs optional. All GTOs came with 15x7" steel wheels with a baby moon type hub cap and trim ring combination and G60x15 blackwall tires. The Rally II and Honeycomb wheels were optional as were two wheel covers--Custom finned and the Deluxe.

Two engines were available on the GTO-- a 400 c.i. V-8 rated at 230hp and a 455 c.i. V-8 rated at 250hp. A three-speed manual with a Hurst shifter was standard on the 400 with the M20 four-speed and Turbo Hydramatic optional. The 455 could be had only with the Turbo Hydramatic automatic. Compression ratio was 8.0:1 on all engines.

Engines are categorized as early--those built before March 15, 1973and late, those built after March 15. Early engines were painted a darker blue color and differ in their emission equipment.

All GTO engines came with dual-exhausts with chrome extensions and all other LeMans options were available on the GTO.

 

SPECIFICATIONS

Height

52.9"

Width

77.7"

Length

207.4"

Weight

4029

 

 

ENGINES

400 c.i. V-8 4V

C.R.

8.2:1

Horsepower

230@4400 net

Torque

325@3200 net

 

 

455 c.i. V-8 4V

C.R.

8.0:1

Horsepower

250@4000 net

Torque

370@2800 net

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