Owner Bio: Bill Dietrich
Bill, a 44-year-old recreational equipment installer, has been racing for 14 years. He bought his GTO in 1984 because he always liked the looks of Pontiacs. He told HPP, "It's special to me because it is the first car I ever owned and I've had a lot of good times and memories with it." His favorite moment with his GTO is the first time it broke into the 10s, and that's just one of his successes. He's also been Runner-Up at Quaker City Raceway in the Street Class and Runner-up at Pontiacs in the Park two days in a row.
| STRIP TUNING LOG |
| Run/Tuning | Launch RPM | Shift Pt. | 60-ft. | 1/8-mile | 1/4-mile |
| 1. 32-deg timing | 1,800 | 6,800 | 1.43 | 6.62/103.22 | 10.47/126.60 |
| 2. 30-deg timing | 1,800 | 6,800 | 1.44 | 6.60/103.40 | 10.45/126.57 |
| 3. No. 92/92 jets | 2,000 | 6,800 | 1.43 | 6.59/103.79 | 10.43/127.07 |
| BEST PASS CORRECTED | | 10.12/131.02 |
| 4. No. 94/94 jets | 2,000 | 6,800 | 1.45 | 6.63/103.76 | 10.47/126.66 |
| 6. No. 92/92 jets | 1,800 | 6,800 | 1.45 | 6.62/103.65 | 10.47/127.10 |
Run Notes: 1) Car hooked good; hit all shift points; 2) Same; 3) Car liked jet change; best pass 4) Car hooked good; hit rev limiter in Second gear, too much jet; 6) Car hooked good, short shifted First gear, pulled hard on top end
| STRIP SPECS |
| Year/Model | '68 GTO |
| Race Weight With Driver | 3,335 lbs |
| Curb Weight | 3,160 lbs |
| Fuel Level When Weighed | 2.5 gal |
| Fuel Shell | 110-octane |
| Engine | '74 YF-code 400 |
| Cubic Inches Before/After | 400/412 |
| Engine | Built By Owner |
| Induction System |
| Air Cleaner | Hillborn-style scoop |
| Carburetor | Holley 950 cfm by DaVinci |
| Jets | No. 93/No. 93 |
| Spacer Plate | 1-in HVH Super Sucker |
| Intake Manifold | Victor 4150 port matched |
| Fuel System |
| Pump | 2 Holley Blacks, 120 gph |
| Lines | -8 AN |
| Regulator | Barry Grant set at 9 psi |
| Heads |
| Casting | KRE High Port 56cc chambers |
| Head Porting | Yes |
| Flow Numbers | 350 cfm at 0.700-in intake |
| Valves | 2.20/1.70-in Ferrea SS |
| Bottom End |
| Pistons | SRP, flat-top, 4.18-in |
| Rings | Total-Seal, gapless |
| Rods | Eagle forged, H-beam, 6.625-in |
| Compression Ratio | 12.51 |
| Crankshaft | Stock cast iron, 3.75-in stroke |
| Rotating Assembly Balanced | Yes |
| Camshaft |
| Brand | Comp Cams solid roller |
| Duration at 0.050 | 276/280-deg |
| Duration Advertised | 308/312-deg |
| Lift With Specified Rocker Arms | 0.660/0.660-in |
| Lobe Separation Angle | 106-deg |
| Installed Position | Straight up |
| Rocker Arms | Harland Sharp roller, 1.51-ratio |
| Ignition |
| Distributor | MSD Pro-Billet |
| Amplifier | MSD 7AL 3 |
| Coil | MSD Pro Power |
| Wires | ACCEL 10.8 mm |
| Spark Plugs | Autolite 3924 |
| Total Timing | 32-deg |
| Rpm that total timing is reached | Locked out |
| Exhaust |
| Headers | Hooker Super Comp |
| Primaries | 1.875-in |
| Collectors | 3.50-in |
| Exhaust Pipes | None |
| Mufflers | None |
| Crossover | None |
| Drivetrain |
| Transmission | Turbo 350 with 2.75 low gear, built by owner |
| Converter | GER, 9-in, 4,500 rpm stall |
| Shifter | Hurst Quarter Stick |
| Rear | GM 12-bolt |
| Rear Gear Ratio | 4.331 |
| Spool | Strange |
| Axles | Moser 33-spline, C-clip eliminator |
| Chassis and Suspension |
| Brakes | F/R Stock drum/drum |
| Wheels | F/R Centerline Auto Drag 15x3.5/15x10 |
| Tires F/R | M/T ET 27.5x4.50x15/Phoenix F/X
Drag Slicks 28.5x11.5x15 |
| Tire Pressure F/R | 35 psi/11.5 psi |
| Suspension Front |
| Springs Moroso Trick | Shocks Competition Engineering 90/10 |
| Control Arms | Stock |
| Stabilizer Bar | None |
| Other Mods | None |
| Suspension Rear |
| Springs | Stock |
| Control Arms | Dick Miller tubular adjustable |
| Stabilizer Bar | None |
| Shocks | Dick Miller |
| Other Features | None |
| The Rest |
| Chassis Mods | Stock frame boxed in |
| Interior Mods | 8-point rollcage, fiberglass race seat |
| Exterior Mods | Fiberglass hood and front bumber |
| Safety Mods | SFI-approved drivetrain parts, tranny blanket, driveshaft loop |
| Paint | Medium Quasar Blue basecoat/clearcoat |
| Launch Technique | 1,800-2,000 rpm, foot to the floor on last yellow |
| Best 1/8-mile E.T./MPH | prior to event 6.51/104.72 |
| Best 1/4-mile E.T./MPH | prior to event 10.28/129.75 |