OWNER BIO: JOHN MUNTEAN
John has 20-plus years of racing under his Pontiac belt. He picked up this '72 GTO because, "I have always loved GTOs, and this one came along and looked like a prime candidate for street/strip action," he says. John has owned more than 30 Pontiacs and he is just 39 years old. Currently in his collection are two '69 GTOs--one a Judge--a '70 GTO, a '67 GTO, and a '96 Trans Am.What he likes most about his '72 is the engine, because it's capable of quick 1.61 60-foot times and has more than 400 passes on it with no problems.
| Strip Specs |
| Year/Model: | '72 GTO |
| Race Weight: | 3,725 lbs |
| Curb Weight: | 3,530 lbs |
| Fuel Level: | 1/2 tank |
| Type of Fuel: | Cam 2 105-octane |
| Engine: | '70 455 |
| Cubic Inches Before/After: | 455/462 |
| Built By: | Owner |
| Carburetor: | Holley 750 DP No. 4779, jets out of the box |
| Spacer Plate: | 1/2-in Mr. Gasket aluminum |
| Intake Manifold: | Warrior |
| Fuel System: | Mechanical pump, 3/8-in line |
| Heads: | '68 No. 16, gasket matched, 2.11/1.77 stock valves |
| Flow Numbers: | N/A |
| Pistons/Rings: | TRW forged flat-top / stock replacement |
| Rods: | Stock cast |
| Compression Ratio: | 11.75:1 |
| Crankshaft: | Stock nodular iron |
| Rotating Assembly Balanced: | Yes |
| Camshaft: | Comp Cams hydraulic Magnum 312,0.532/0.532 lift, 108-deg centerline |
| Installed Position: | Straight up |
| Rocker Arms: | Harland Sharp roller, 1.50 ratio |
| Ignition: | HEI, ACCEL Super Coil, Taylor wires, AC R45S plugs |
| Total Timing: | 32 deg at 2,400 rpm |
| Exhaust: | Blackjack 1.875-in primary headers, 3-in collectors, Dr Gas. 3-in X-pipe, 3-in Flowmasters |
| Power adder: | None |
| Transmission: | Turbo 350, performance rebuild |
| Converter: | 8-in B&M, 4,000 rpm stall |
| Shifter: | Stock |
| Rear: | 12-bolt posi, 3.73:1 gears, factory axles |
| Brakes F/R: | 9.5-in drum |
| Wheels F/R: | Centerline ConvoPro 15x4 / Centerline ConvoPro 15x8.5 |
| Tires F/R: | Futura 205/75-15 / M/T ET Street 28x12.5x15 |
| Tire Pressure F/R: | 40 psi / 12.5 psi |
| Suspension Fr: | Stock, Lakewood 90/10 shocks |
| Suspension Rr: | Stock, passenger-side airbag 4 psi, Monroe Gasmatics |
| Chassis Mods: | None |
| Interior Mods: | None |
| Exterior Mods: | Rear spoiler |
| Safety Mods: | Driveshaft loop |
| Paint: | Orange |
| Launch Technique: | Footbrake to 1,800 rpm |
| Best 1/4-mile ET, MPH Prior to Event: | 12.18 at 109 |
| STRIP TUNING LOG |
Run | Tuning | Launch RPM | Shift Point | 60-FT | 1/8 E.T./MPH | 1/4 E.T./MPH |
| 1 | 34-deg total timing, 14 psi in tires | 1,800 | 5,500 | 1.71 | 7.90/85.56 | 12.52/105.76 |
| 2 | 32-deg total timing, 13 psi in tires | 1,800 | 5,600 | 1.71 | 7.85/86.86 | 12.41/107.04 |
| 3 | Same, 12.5 psi in tires | 1,800 | 5,600 | 1.73 | 7.92/85.98 | 12.57/104.75 |
| 4 | Same | 1,800 | 5,600 | 1.70 | 7.82/87.24 | 12.35/108.15 |
| 5 | Same | 1,800 | 5,600 | 1.71 | 7.81/87.31 | 12.91/85.42 |
| Run Notes: 1) New ET Streets; 4) Threw power steering belt; 5) Lifted after 1/8-mile due to tire spin |