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52 years family-owned 1970 Pontiac GTO Hardtop Coupe Restored, Modified

Here is a 1970 Pontiac GTO which was built in Oshawa and has been owned by the same Ontario family for 52 years.  It was purchased in 1972 by the father of the current owner before the latter inherited it.  The father and his brother ran a well know speed and performance shop in the west end of Ottawa and the current owner is a second-generation shop owner with memories of riding in the back seat of this GTO for fast weekend runs to the family cottage as a child.  The current owner has overseen a restoration with modifications to bring power for the stroked Pontiac 400 cubic-inch engine to 574 horses at 5700 RPM, complemented by 580 lb.-ft. of torque at 4700 RPM – please see Dyno sheet in the gallery for full testing results.  The seller acknowledges that the burnout video to demonstrate this GTO’s line lock and power was somewhat self-indulgent and will also have an new set of Mickey Thompson rear tires equivalent to those photographed installed and balanced for the new owner.

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This GTO was refinished in its original Granada Gold colour, Pontiac code 58, in approximately 2015.  The vinyl on the roof was replaced; the original was brown, the owner opted for a black vinyl roof on the refurbishment.  These contrasting exterior colours are in place over a brown interior.  It is mostly original, the front bucket seats have been re-covered with correct Pontiac upholstery, the pattern of which matches the rear bench.  Carpets have also been replaced with correct OEM items in the original colour.  The body-coloured Endura front bumper, original to the car, shows some cracking under the paint – see photos in the gallery.  Below the front bumper is a Judge-standard front spoiler, the black grille frames are also a Judge tribute touch (these were chrome, originally/for non-Judge GTOs in 1970).  Rear bumper is in chrome, complemented below by quad exhaust outlets.

The car has been modified with many finishing touches upgraded to the level of GTO Judge trim:  rear spoiler is an aftermarket reproduction of the Judge spoiler, dash clock has been replaced by a tachometer by AutoMeter (clock face remains with the car, in the glove box and photographed).  There is also a hood-mounted tachometer – review our videos to see both tachometers displaying readings consistent with one another.  Further added instrumentation includes a gauge pack by Auto Gage below the radio, featuring readouts for voltage, water temperature and oil pressure.  A functional twin-scoop hood with RAM AIR decals (another Judge tribute) is in place, the car also has power steering, power brakes featuring line lock and a digital display ClassicSound CS-900C AM/FM Radio with AUX input.  Brakes are discs up front and drums in the rear, the stock set-up.

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The Pontiac Rally 15” wheels are sourced from a 1977 Firebird, having replaced the stock 14” units.  They have been powder coated.  They are outfitted with Mickey Thompson Sportsman S/T radial tires.  Up front, the tires measure 235/60, date coded 2009, while the rear pair are 275/60.  The rear tires are close to the wear bars and the seller will replace, install and balance an equivalent new set on a successful sale.  The original Fisk Custom spare tire mounted on the original spare rim is affixed to the truck floor.

Front bucket seats are divided by a centre console with storage compartment.  Simulated woodgrain and chrome-look textured finish front the padded dash while a three-spoke Pontiac steering wheel is fore of the instrumentation with 140 MPH speedometer, odometer showing 49,000 miles – seller advises that the odometer has rolled over once – the AutoMeter tachometer, fuel gauge and warning lights for temperature, generator and oil.  Centrally mounted are the ventilation controls, ClassicSound head unit, ashtray with lighter and accessory gauges.  Automatic shifter on the floor is adorned with a line-lock control and backed by simulated woodgrain finish.  Wipers and lights controls are to the left of the three-spoke Pontiac wheel.  The car is equipped with lap belts for all five occupants while vinyl Pontiac-branded mats protect the correct, replaced carpet.

The engine was refurbished, work was completed in 2011 with under 5,000 miles estimated to have been driven since.  Owner has select invoices on hand for below parts, he advises that the work of installing and tuning was handled by D&D Performance of Chesterville, Ontario to the tune of approximately $15,000, with parts suppliers well-known to the Pontiac performance crowd, notably SD Performance of Chilliwack, BC.  With an original Pontiac 400 c.i. V8 as the starting point, the engine was stroked, increasing displacement to 462 cubic inches; fuel delivery is by a 950 CFM Holley carburetor.  Please see invoices in the gallery for details:  torque converter, complete rotating assembly (stroke, forged crank, pistons, pins, rings, bearings, rods, rod bearings, main bearings, harmonic balancer, flex plate, crankshaft, camshaft, rear seal, hydraulic roller, oil pan, oil pump, head gaskets, oil pan gaskets, timing cover gaskets, valve cover gaskets, aluminum water pump and its divider and sleeves, AutoLite spark plugs, JP Billet timing chain, Edelbrock intake, cylinder heads, head bolts, timing cover, oil pump driveshaft, Melling oil pump, aluminum finned valve cover and more  A Be Cool radiator is installed.

This GTO’s engine is built for performance, with the 574 horsepower and 580 lb.-ft. of torque documented on the Dyno report supplied by the seller and on display in our driving videos as evidence.  An inspection of the engine compartment reveals a very clean kit, with many chrome accoutrements, Other higher-performance parts shown in the gallery include Optima battery, Kauffman Racing Equipment cylinder heads, upper and lower QA1 control arms (front), front coil overs, chromed alternator, chromed oil cap, MSD ignition cables, AutoGage fuel pressure regulator and SPAL 2720 CFM 11in Dual High Performance Fan.  The underside of the car is as clean as the engine bay, highlighted by chrome-capped 12-bolt differential, unmarked exhaust pipes, Lakewood traction bars, stock suspension and clean fuel tank.

The prodigious power is transferred to the rear wheels by the GM Turbo Hydramatic three-speed automatic transmission.  Shifter is on the floor and is adorned with the line-lock control.

This Restored and Modified 1970 Pontiac GTO is available from the owner, whose family has owned it 52 years, with car cover, new rear tires, two set of keys, Ontario Safety Standards Certificate, in Ottawa, Ontario.

More videos and Photo Gallery appear below the bidding section. 

The VIN decodes as follows, 2423701109920:
2 – Division, Pontiac
42 – Series, GTO
37 – Body Code, 2-door Coupe
0 – Model Year, 1970
1 – Assembly Plant, Oshawa
109920 – Production Sequence (in 1970, V8 models started at 100001)

The trim tag decodes as follows:
ST – Style
70 –1970 Model Year
2 – Series 2
Body Style – 4237 GTO 2 dr. Hardtop
OS – Assembly Plant, Oshawa

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