1964 Pontiac Lemans GTO

The famous Grand Turismo Omologata (GTO) was for the first year offered to the public. Available only in 1964 as an option on the 1964 Pontiac Tempest LeMans. GTO optioned Tempest Lemans featured distinctive appearance items in place of standard LeMans features. Standard Engine was a 389 cubic inch with 10.75:1 compression ratio which produced 325 horsepower at 4600 rpm's. Optional you could factory order the same 389 cubic inch motor which produced 348 horsepower at 4600 rpm's. Standard Equipment included: 389 engine w/1 - 4bbl and 325 horsepower, 3 speed stick with Hurst Shifter, Heavy-duty clutch, heavy-duty springs, shocks, stabilizer bar, special 7.5 x 14 red-line tires (rayon cord whitewalls optional at no extra cost), 14 x 6JK wide-rim wheels, high capacity radiator, declutching fan, high capacity battery, chromed air-cleaner, rocker covers, oil filler cap, bucket seats, standard axle ratio 3.23:1 (3.08, 3.36*, 3.55* to 1 available at no extra cost). Extra Cost Options: 389 engine w/3 - 2bbl and 348 horsepower (code #809), 3.55:1 axle ratio standard with this engine option/4speed with Hurst shifter (gear ratios 2.56:1, 1.91:1, 1.48:1, 1.00:1 and 2.64:1 reverse) 2-speed automatic with 2.20:1 torque converter, Safe-T-Track limited-slip differential,  (Code #701), 3.90:1, axle ratio available on special order with metallic brake linings, heavy-duty radiator and Safe-T-Track, Handling kit-20:1 quick steering and extra-firm-control heavy-duty shocks (Code #612), high-performance full transistor (breakerless) ignition (Code #671), tachometer (code #452), custom sports steering wheel, exhaust splitters (dealer installed), wire wheel discs (dealer installed), custom wheel discs with spinner and break cooling holes, Console.

1964 Pontiac Tempest Lemans GTO Specifications

Model Number	Body/Style Number	Body Type & Seating	Factory Price	Shipping Weight	Total Production
Tempest LeMans w/ GTO Option
22	27	2d Coupe - 5P	$2,852	3,106 lbs	7,384
22	37	2d Hardtop - 5P	$2,963	3,126 lbs	18,422
22	67	2d Convertible - 5P	$3,081	3,360 lbs	6,644

NOTES: 32,450 Tempest LeMans GTO's were built in 1964

Model Series Identification

GTO 2d Coupe - 5P - 2227

GTO 2d Hardtop - 5P - 2237

GTO 2d Convertible - 5P - 2267

Chassis Data

Model	Wheelbase	Overall Length	Width	Front Tread	Rear Tread	Tires
GTO	115 in	203 in	73.3 in	58 in	58 in	7.75 x 14

1964 Pontiac Tempest Lemans GTO Engines

Location Of Engine Code: V-8 engine codes are found on front of block below right cylinder head. NOTE: Some Pontiac experts claim that a few GTOs were built with factory installed and/or dealer installed 421-cid V-8s.

Letter Code	Engine	Horsepower	Torque	Transmission	Carburetor
76X	8-389	348	428	Manual	3 - 2 BC
77J	8-389	348	428	Turbo Hydra-Matic	3 - 2 BC
78X	8-389	325	428	Manual	4 BC
79J	8-389	325	428	Turbo Hydra-Matic	4 BC

Options and Accessories

Code	Description	Price
NA	Air Conditioning	$430.00
NA	Console Shift (LeMans)	NA
NA	Padded Dash	NA
NA	Remote Control Mirror	$12.00
NA	Power Convertible Top	NA
NA	Power Tilt Bucket Seats	$96.00
NA	Power Steering	$57.00
NA	Power Brakes	NA
NA	Power Tailgate Window	NA
NA	Push-Button Radio	NA
NA	Bucket Seats	NA
NA	Custom Steering Wheel	NA
NA	Deluxe Steering Wheel w/ Ring	NA
NA	4-Speed Manual Transmission	NA
NA	389-cid/325-hp V-8	NA
809	389-cid/348-hp V-8 (Tri-Power)	NA
NA	Heavy-Duty 3-Speed Manual Transmission	NA
NA	Muncie 4-Speed Manual Transmission (w/ Hurst Linkage)	NA
701	Safe-T-Track Differential	NA
452	Tachometer	$54.00
671	Transistor Ignition	NA
NA	Cordova Top	NA
NA	Two-Speed Wipers & Washers	NA
NA	3-Speed Manual Transmission (standard)	NA
NA	Automatic Transmission	NA
612	Heavy-Duty Shock Absorbers	NA
NA	Console w/ Tachometer	$161.00