Owner Bio: Danny Estep
"I bought this GTO when I was in high school in 1987," says 36-year-old mechanic Danny Estep. "Then, after high school, I turned it into a race car to enjoy. It's my first GTO, which I had wanted since I was 10 years old." During his 19 years of racing, Danny's biggest moment behind the wheel was "winning my first Super Pro race in 2005." When he isn't racing, Danny is raising three children with his wife and enjoying his '68 Firebird 400 and '02 Grand Prix 40th Anniversary Edition.
| Strip Tuning Log |
| Run/Tuning | Launch RPM | Shift Point | 60-FT | 1/8 E.T./MPH | 1/4 E.T./MPH |
| 1. 34-deg timing, 8.5 psi in tires | 4,600 | 6,600 | 1.36 | 6.12/111.90 | |
| 2. Same, 8 psi in tires | 4,600 | 6,600 | 1.31 | 6.07/111.98 | |
| BEST PASS QUARTER-MILE | 9.60/138.86 |
| BEST PASS CORRECTED | 5.79/117.34 | 9.16/145.51 |
| 3. Same | 4,800 | 6,600 | 1.34 | 6.09/112.51 | |
| 4. Same | 4,200 | 6,600 | 1.34 | 6.12/111.96 | |
| 5. Same | 4,600 | 6,600 | 1.34 | 6.15/110.53 | |
| Run Notes: 1) Spun off line, 60-ft off 1 tenth; 2) Hooked well, ran straight, best pass of the day; 3) Spun off line, too much launch rpm, best mph due to spin; 4) Transbrake didn't hold, too hot; 5) Trans didn't hold on line, too hot from back-to-back passes. |
| Strip Specs |
| Year/Model | '70 GTO |
| Race Weight With Driver | 2,825 lbs |
| Curb Weight | 2,625 lbs |
| Fuel Level When Weighed | 5 gallons full |
| Fuel | Torco methanol |
| Engine | YH-code 455 |
| Cubic Inches Before/After | 455/474 |
| Engine Built By | Owner and boss, Keith Pursell |
| Power Adder | None |
| Induction System |
| Air Cleaner | None |
| Carburetor | Chuck Nuyten 1050 Dominator |
| Jets | #144 squared |
| Spacer Plate | 1-inch wood, open |
| Intake Manifold | Victor Jr. |
| Fuel System |
| Pump | Barry Grant 400 Alcohol |
| Lines | -8AN |
| Regulators | 2 Holley, 1 for each float bowl, set at 9 psi |
| Heads |
| Brand | Edelbrock aluminum |
| Head Porting | Butler Performance |
| Flow Numbers | 325-cfm intake at 0.700 at 28-inch pressure |
| Valves | Ferrea SS, 2.11/1.77 |
| Bottom End |
| Pistons | Ross forged, flat-top, +0.060 |
| Rings | Total Seal gapless, Moly |
| Rods | Eagle 6.800-inch, forged steel |
| Compression Ratio | 12.5:1 |
| Crankshaft | Eagle, cast, 4.25-in stroke |
| Rotating Assembly Balanced | Yes |
| Camshaft |
| Brand | Comp Cams solid roller |
| Duration at 0.050 | 280/284-deg |
| Duration Advertised | 308/312-deg |
| Lift With Specified Rocker Arms | 0.660/0.660 |
| Lobe-Separation Angle | 110-deg |
| Installed Position | 106-deg |
| Rocker Arms | Butler Performance roller, 1.50:1 |
| Ignition |
| Distributor | MSD Pro-Billet |
| Amplifier | MSD 7AL2 |
| Coil | MSD Blaster |
| Wires | MSD 8mm |
| Spark Plugs | NGK V Power 9 |
| Total Timing | 34-deg |
| RPM Total Timing is Reached | Advance is locked |
| Exhaust |
| Headers | Doug's, round-port |
| Primaries | 2.25-inch |
| Collectors | 3.5-inch |
| Exhaust Pipes | None |
| Drivetrain |
| Transmission | Powerglide, JW ultrabell (bellhousing) |
| Converter | BTE, 8-inch, 5,200-stall |
| Shifter | Hurst Quarterstick II |
| Rear | Fab 9 (9-inch) |
| Rear-Gear Ratio | 5.00:1 |
| Spool | Moser |
| Axles | Moser |
| Chassis and Suspension |
| Brakes F/R | Wilwood 10-inch disc |
| Wheels F/R | Weld Rod Lites 15x4.5/15x14 |
| Tires F/R | M/T Front Runners 26x4.5x15 / Goodyear 32x14x15 slicks |
| Tire Pressure F/R | 35 psi/8 psi |
| Suspension Front |
| Springs | QA1 |
| Control arms | Uppers Global West, bottom stock |
| Stabilizer bar | Removed |
| Shocks | QA1 coilovers, set at 4 clicks |
| Suspension Rear |
| Springs | Koni |
| Ladder Bars | Alston's Chassisworks |
| Stabilizer Bar | None |
| Shocks | Koni coilover set at 6 clicks |
| Chassis Mods | 14-point rollcage |
| The Rest |
| Interior Mods | Funny Car 'cage NHRA certified |
| Exterior Mods | Fiberglass hoodscoop, doors, decklid, and frontend |
| Safety Mods | NHRA-certified 'cage, SFI-approved drivetrain parts, 5-point safety harness |
| Paint | PPG Silver |
| Launch Technique | 4,600 rpm on 2 step and transbrake |
| Best 1/8-mile ET, MPH Prior to Event | 5.92 at 116 |
| Best 1/4-mile ET, MPH Prior to Event | 9.52 at 140 |