1970 Pontiac GTO

In the GTO continued and once again received styling changes . Restyled with a new front end with four exposed headlamps wrapped in an Endura bumper, new body creases, and a redesigned rear end. A new 455 engine was added as well as the rare Vacuum Operated Exhaust option. The VOE option was an attempt to simplify the old rodding trick of opening up the exhaust system for more power. With the VOE option, the driver could pull the knob under the dash and engine vacuum was routed to a diaphragm on each muffler where it opened an internal baffle and gave the exhaust an express route through the muffler, reducing backpressure and increasing power. The 1970 GTO with the 400-cid 366-hp V-8 was capable of 0-60 in 6 seconds and 14.6 seconds in the quarter mile. The 455-cid 360-hp GTO hardtop registered 6.6 seconds 0-60 and a 14.8 second quarter mile. GTO shared Tempest sheet metal combined with a standard Endura rubber nose. Recessed grilles were housed in two oval cavities and the letters "GTO" were in the drivers side insert. Also there was GTO lettering behind the front wheel openings and flared, crease sculptured fenders were used. Standard equipment included bucket seats, twin air scoops, sports type springs and shocks, glove box, dual exhaust, 3-spd manual floor shift, vinyl trimmed padded dashboard, heavy duty clutch, carpeting, ashtray and panel courtesy lamps, deluxe steering wheel, and G78 x 14 black sidewall fiberglass tires. A Code 332-WT1 "The Judge" option was available again. It had a 400-cid Ram-Air V-8, G70 x 14 fiberglass black sidewall tires, side stripes, black textured grilles, T-handle shifters on manual floor shift, Rally II wheels less trim rings, rear deck air foil, and Judge stripes and decals.

1970 Pontiac GTO Production Numbers and Specifications

Model Number	Body/Style Number	Body Type & Seating	Factory Price	Shipping Weight	Total Production
GTO Series 242
242	37	2d Hardtop - 5P	$3,267	3,641 lbs	32,737
242	67	2d Convertible - 5P	$3,492	3,691 lbs	3,615
GTO Series 242 w/ WT-1 "The Judge" Option
242	37	2d Hardtop - 5P	$3,604	3,506 lbs	3,629

Notes 40,149 GTOs and Judges were built in 1970 16,033 GTOs and Judges had synchromesh and 24,116 had automatic

Model Series Identification

GTO 2d Hardtop - 5P - 24237

GTO 2d Convertible - 5P - 24267

Chassis Data

Model	Wheelbase	Overall Length	Front Tread	Rear Tread	Tires
GTO	112 in	201.5 in	60 in	60 in	G78 x 14
GTO "The Judge"	112 in	201.5 in	60 in	60 in	G70 x 14

1970 Pontiac GTO Options & Accessories

Group #	Part #	Code	Description	Suggested List Price
12.181	988806	AF	Air Foil, Deck Lid	Not Available
4.898	988808	AM	Power Brakes	$46.15
9.772	988727	AM	Electric Clock w/o Tachometer	$17.95
8.873	988679	AM	Compass	$6.95
7.629	988707	AM	Spare Wheel & Tire Cover	$4.35
3.880	988810	AM	Cruise Control 8-Cyl Automatic	$49.95
9.778	988720	AM	Rear Window Defogger	$24.75
8.891	988761	AM	Tissue & Litter Container/Dispenser	$5.95
9.990	985592	AM	Fire Extinguisher (2 3/4 lbs.)	$14.95
9.990	985593	AM	Fire Extinguisher Re-Charge Kit	$2.15
7.800	988700	AM	Front License Plate Frame	$1.75
7.800	988699	AM	Rear License Plate Frame	$1.75
10.352	988724	AM	Door Edge Guard - 2-Door	$6.15
2.485	988818	AM	Headlamp Control	$24.50
0.034	984642	SPA	Engine Block Heater	$10.25
8.083	988595	AM	Hood Retainer	$14.95
4.006	988605	AM	Gear Shift Knob - 4-Speed Manual	$6.15
4.006	984848	AM	Gear Shift Knob (Walnut) - 3-Speed Manual	$5.95
9.988	988730	AM	Luggage Compartment Lamp	$2.95
8.890	988681	AM	Underhood Lamp	$3.95
8.083	988817	AM	Hood Lock	$9.95
15.294	984826	AM	Trunk Mat	$9.95
15.286	984661	AM	Front Mat Full (Ivory)	$9.95
15.286	984655	AM	Front Mat Pair (Ivory)	$7.95
15.306	984114	AM	Rear Mat Pair (Ivory)	$7.65
15.286	984659	AM	Front Mat Full (Black)	$9.95
15.286	984653	AM	Front Mat Pair (Black)	$7.95
15.306	984512	AM	Rear Mat Pair (Black)	$7.65
15.286	988776	AM	Front Mat Full (Red)	$9.95
15.286	988789	AM	Front Mat Pair (Red)	$7.95
15.306	988796	AM	Rear Mat Pair (Red)	$7.65
15.286	988770	AM	Front Mat Full (Dark Blue)	$9.95
15.286	988783	AM	Front Mat Pair (Dark Blue)	$7.95
15.306	988790	AM	Rear Mat Pair (Dark Blue)	$7.65
15.286	988771	AM	Front Mat Full (Dark Gold)	$9.95
15.286	988784	AM	Front Mat Pair (Dark Gold)	$7.95
15.306	988791	AM	Rear Mat Pair (Dark Gold)	$7.65
15.286	988772	AM	Front Mat Full (Dark Green)	$9.95
15.286	988785	AM	Front Mat Pair (Dark Green)	$7.95
15.306	988792	AM	Rear Mat Pair (Dark Green)	$7.65
15.286	988773	AM	Front Mat Full (Dark Sandlewood)	$9.95
15.286	988786	AM	Front Mat Pair (Dark Sandlewood)	$7.95
15.306	988793	AM	Rear Mat Pair (Dark Sandlewood)	$7.65
15.286	988774	AM	Front Mat Full (Dark Saddle)	$9.95
15.286	988787	AM	Front Mat Pair (Dark Saddle)	$7.95
15.306	988794	AM	Rear Mat Pair (Dark Saddle)	$7.65
15.286	988775	AM	Front Mat Full (Dark Brown)	$9.95
15.286	988788	AM	Front Mat Pair (Dark Brown)	$7.95
15.306	988795	AM	Rear Mat Pair (Dark Brown)	$7.65
10.185	988596	AM	Outside Rearview Mirror (Right)	$4.85
10.185	988653	AM	Remote Control Mirror (Left)	$12.15
9.790	988757	AF	Power Flow Ventilation w/o Air Conditioning	$54.75
9.650	988742	AM	Push Button Radio	$53.55
9.650	988740	AM	AM-FM Radio	$125.00
9.650	988741	AM	AM-FM Stereo Radio	$225.00
12.242	988693	AM	Deck Lid Release	$12.95
9.675	993502	A	Child Safety Seat - Standard	$8.95
9.675	987499	A	Child Safety Seat - Deluxe	$18.95
9.679	993970	A	Infant Safety Carrier Seat	$9.95
9.665	988578	AM	Rear Speaker	$13.25
9.665	984985	AM	Rear Speaker Adapter	$0.80
6.508	988803	AM	Power Steering	$95.15
6.508	988804	AM	Adapter Package - Use w/ All 8-Cyl Air Cond.	$3.96
9.670	988752	AM	Stereo Tape Player w/ Console	$125.00
9.670	988754	AM	Stereo Tape Player w/o Console	$125.00
9.750	988748	AM	Hood Tachometer	$75.00
5.880	984922	AM	Tire Inflator - Fire Extinguisher (CO-2) - S/S Spare	$7.95
2.694	988758	AMF	Trailer Wire Harness	$13.15
5.858	988607	AM	Custom Wheel Discs	$54.00
5.858	988609	AM	Deluxe Wheel Discs	$30.00
5.858	984528	AM	Wire Wheel Discs	$69.15
10.146	988698	SAS	Windshield Blade - Arctic Blade 16"	$9.40
7.345	3192704	MF	Rear Superlift Shock Absorbers	$49.30

1970 Engine Options

Letter Code	Engine	Horsepower	Torque	Transmission	Carburetor
WA	8-455	370	445	Manual	4 BC
WS	8-400	366	445	Manual	4 BC
WT	8-400	350	445	Manual	4 BC
WW	8-400	370	445	Manual	4 BC
XP	8-400	370	445	Auto	4 BC
XV	8-400	330	430	Auto	4 BC
XX	8-400	265	397	Auto	2 BC
YA	8-455	370	445	Auto	4 BC
YS	8-400	350	445	Auto	4 BC
YZ	8-400	366	445	Auto	4 BC

Axle Codes

Location Of Axle Codes: Letter codes are on axle tube near carrier

Codes - Non-Locking	Codes - Locking	Ratio
WB	XB	2.56
WC	XC	2.78
WT	XT	3.07
WE	XE	3.08
WF	XF	3.23
WU	XU	3.31
WH, WV	XH, XV	3.55
WK	XK	3.90
	XM, 7N	4.33