1964 GT Hawk – Rock River Valley Chapter SDC

Tells:

From the front, the embossed Hawk on the top of the grille surround is removed in favor of a stand up circled “S” emblem (hood ornament). The grille pattern is similar to 1963, but the vertical bars are slightly recessed and painted flat black. There is a new central grille emblem, a gold Hawk on a brushed chrome base. The side grilles, actually slightly reshaped, now curve around toward the inner edge and have no vertical component. The signal light lens are clear with amber bulbs. The R series round grille badges are redesigned. The surrounds and headlight rims are mounted with black rubber cushions between them.

From the side, the red-white-blue badges are on a chrome instead of gold base. The horizontal molding on the “C” pillar has black paint in the grooves. There are new full-wheel covers (AC-3155). The Hawk “birds” and the “Gran Turismo” script have changed from gold to chrome. R series fender badges have

changed from rectangular to oval.

From the rear, the faux metal over-lay is gone, there is a new smooth deck-lid, finally 1956 to 1963 grooves are gone. This change requires a new chrome “Studebaker Hawk” script for the new deck-lid. The taillight housing are completely chrome plated.

On the interior, the pleats are removed from the upper dash crash pad. A new lower crash

pad is added below the radio and glove box. The chrome metal door inserts are replaced with wood grain panels, the upper door pleats are horizontal instead of vertical and those red-white-blue emblems seen on the outside of the doors are now on the interior door panels as well. The background around the gauges is black instead of wood grained and new chrome trim surrounds each section of the three plain instrument panel.

Mechanical changes were slim in 1964, most significant was the addition of R3 & R4 packages, while available no factory R3 or R4 was sold. The badges were produced and sometimes seen and added to R3 or R4 clones. However, several options were added for R1 & R2 packages, which include transistor ignition system, exhaust headers and a heavy duty competition clutch.

Restoration:

One of the unique features of the 1964 GT Hawk, was the optional new black or white vinyl “Sports Roof” that could be added to the front ½ of the roof. We don’t know how many of this option was purchased, but have one example in our club in Ron Bell’s 1964 GT.

Besides the new standard full-wheel covers (AC-3155) for 1964, the Air-Flo’s were discontinued, but the Aero-Strut style was still offered, as well an a new wire spoke version. Halibrand “mag” wheels were available from dealers. The Halibrand’s have recently be made available and I have seen them installed on a local 1964 Avanti.

1964 Gran Truismo Hawk Seat Upholstery
Cloth and Vinyl
Code	Cloth Insert	Capping
824 BC	Blue Metallic Weave Cloth	Blue Vinyl
834 GC	Green Metallic Weave Cloth	Green Vinyl
844 BRC	Chestnut Metallic Weave Cloth	Brown Vinyl
854 RC	Red Metallic Weave Cloth	Red Vinyl
All Vinyl
Code	Insert	Capping
914 BKV	Black Vinyl	Black Vinyl
924 BV	Blue Vinyl	Blue Vinyl
934 GV	Green Vinyl	Green Vinyl
944 BRV	Brown Vinyl	Brown Vinyl
954 RV	Red Vinyl	Red Vinyl
Inserts pleats run lengthwise. 1964 GT Hawk cloth or all vinyl seats are offered only in solid colors. The all vinyl option cost was $31.74. The cloth offered for 1964 GT Hawks is unique with the addition of the silver threads in the cloth patterns.

1964 Gran Truismo Hawk Vinyl Sports Roof Option
White Vinyl Sports Roof
Standard	Optional
Midnight Black	Astra White
Strato Blue	Laguna Blue
Jet Green	Horizon Green
Bordeaux Red	Moonlight Silver
Bermuda Brown	Golden Sand

Black Vinyl Sports Roof
Standard	Optional
Astra White	Midnight Black
Laguna Blue	Strato Blue
Horizon Green	Jet Green
Moonlight Silver	Bordeaux Red
Golden Sand	Bermuda Brown
The vinyl Sports Roof option cost was $65.00

1964 Gran Truismo Hawk External Paint Color
Code	Color	Code	Color
P6410	Midnight Black	P6415	Jet Green Metallic
P6411	Astra White	P6416	Moonlight Silver Metallic
P6412	Laguna Blue Metallic	P6417	Golden Sand Metallic
P6413	Strato Blue Metallic	P6418	Bordeaux Red
P6414	Horizon Green Metallic	P6419	Bermuda Brown Metallic
Wheels on the outside were painted an off-white color called Pebble Sand. Most if not all of the wheels were painted black on the inside. No two-tones were offered from the factory during the 1964 model year. Studebaker called their enamels “Sapphire-Luster Exterior Finishes” and claimed that they never needed waxing.

1964Gran Truismo Hawk Specifications Models 64V-K6 and 64S-K6¹
Model	Engine	Price	Weight
63V-K6	V8	$2,958.00	3,280
R1 Super Hawk	V8-JT	$3,329.70	?	These are cars with the complete High Performance Packages. However note that while the R3 & R4 were offered, none were built.
R2 Super Hawk	V8-JTS	$3,539.70	?
R3 Super Hawk		$4,360.70	?
R4 Super Hawk		$4,220.70	?
Engines	170¹	259¹	289	R1 289	R2 289²
Type	OHV Six	OHV V8	OHV V8	OHV V8	OHV V8
Bore & Stroke	3.0 x 4.0	3.56 x 3.25	3.56 x 3.62	3.56 x 3.62	3.56 x 3.62
Displacement (CU)	169.6	259.2	289	289	289
Horsepower w/2-bbl	112@4500	180@4500	210@4500	N/A	N/A
Horsepower w/4-bbl	N/A	195@4500	225@4500	240@5000	²289@4800
Compression Ratio	8.25:1	8.5:1	8.5:1	10.25:1	9.0:1
Carburetor 2-bbl	Carter AS	Stromberg WW	Stromberg WW	N/A	N/A
Carburetor 4-bbl	N/A	Carter AFB	Carter AFB	Carter AFB	Carter AFB
The R3 & R4 engine specifications
The R3 & R4 displacement was 304.5 with a the bore at 3.65 inches and the stroke at 3.62 inches. Both versions used the Carter AFB 4-bbl carburetor. Both engines used transigniter (transistor) ignition. The R3’s compression ratio was 9.75:1, it was Supercharged, and made 335 HP @ 5,350 rpm. The R4’s compression ratio was 12.0:1,Duel Carter AFB 4-bbl, and made 280 HP @ 5,000 rpm. There was a special edition R3 version with duel valve springs and a high-output supercharger pulley set that was rated at 400 HP @ 6,000 rpm. To the best information available no 1964 GT Hawks were manufactured or even ordered before the December 1963 South Bend production shutdown.
Wheel Base 120.5 inches – Fuel Tank 18 gallons – Tires (US) 6.70 x 15 – Cooling System 17 quarts (18 quarts with Climatizer) – Oil Capacity 5 quarts (6 quarts with oil filter). ¹Models with 259 V8’s or 170 sixes were only offered for sale outside North America ²Supercharged

1964 Gran Truismo Hawk Serial & Engine Numbers
Starting Serial Numbers	63 289 V8’s	63Sixes¹
US	64V-1,001	64S-1,001
1964 Engine Identification Code
Engine Type	S=170	V=259	P=289	JT=Jet Thrust	JTS=Jet Thrust Supercharged
Month (The letters I & L are not used)	A=Jan.	B=Feb.	C=Mar.	D=Apr.	E=May	F=June
Month (The letters I & L are not used)	G=July	H=Aug.	J=Sept.	K=Oct.	M=Nov.	N=Dec.
Year	3=1963			4=1964
Day of Month	A two digit number representing the day. (12=12^th day of the month)
Studebaker adopted an all new engine numbering system in 1964. The first Letters in the string will identify the engine type. The next letter will identify the month built. The third number “3 or 4” will identify what year, 1963 or 1964. The last two numbers will represent the day of the month. In this system, any domestic engine type built on the same day have the same engine number, which means for example a GT-Hawk, Lark, and Taxi Cab having a 289 V8, built on January 3^rd would have the same engine number “PA403 (decoded P=289, A=Jan, 4=1964, 03=the 3^rd day of the month. Only export engines would have a suffix (an added number at the end) to identify nth engine for that day.

1964 Gran Truismo Hawk Production
South Bend	Canada		Export		Total
1,489	0		283		1,772
Avanti Powered 1963 GT Hawks¹ (South Bend)
Engine		Total		Super Hawks²
Jet Thrust R1		169		60
Jet Thrust R2		70		46
¹The number of Avanti powered Hawks listed above are included in the 1,772 number above. ²The Super Hawks are included in the total number (369) above.
Sidebar: The number of sixes or 259 V8’s powered GT Hawks is unknown, but we do know that what ever may have been manufactured was sold outside North America. There were no 1964 GT Hawks manufactured in Canada.