OWNER BIO: JEFF RAFF
Twenty-year race veteran Jeff Raff told HPP, "I bought the '64 because I saw it on the side of the road in 1984 and thought it looked cool, like a Chevelle, but it was not a Chevelle, so I worked a deal for $400. In 1986 I started racing it. I drove it to the racetrack until 1989 when it got too radical to drive on the street much. It does see some occasional street use now, however." Jeff says his favorite moments behind the wheel of his '64 GTO came when, "I won the race at GTOAA East Coast Regionals meet, and driving a lap in the GTO at the Brickyard at the GTOAA Nats in 1993." He also owns a '66 GTO convertible.
| Strip Specs |
| Year/Model: | '64 GTO |
| Race Weight: | 3,420 lbs |
| Curb Weight: | 3,130 lbs |
| Fuel Level: | Full-tank |
| Type of Fuel: | 112 octane |
| Engine: | '70 455 |
| Cubic Inches Before/After: | 455/462 |
| Built By: | Bernie Day |
| Carburetors: | Two Holley 750 HPs, Jets No. 80 square |
| Spacer Plates: | Pair of 1-in Super Sucker phenolic |
| Intake Manifold: | Custom sheetmetal 2x4 built by John Gunter | |
| Fuel System: | Twin 110 Mallory pumps, 5/8-in line, two Mallory regulators set to 8 psi |
| Heads: | No. 614 '70 R/A-IV, ported, stock 2.11/1.77 valves |
| Flow Numbers: | 280/208 cfm at 28 in of pressure |
| Pistons/Rings: | Ross forged flat-top, 0.030 / chrome moly |
| Rods: | '58-'62 Forged production |
| Compression Ratio: | 12.48:1 |
| Crankshaft: | Stock nodular iron |
| Rotating Assembly Balanced: | Yes |
| Camshaft: | Lunati solid roller, 270/280-deg at 0.050, 0.627/0.627 lift with 1.50:1 rockers, 110-deg LSA, 108-deg centerline |
| Installed Position: | 104 deg |
| Rocker Arms: | Harland Sharp 1.50 ratio roller |
| Ignition: | MSD Pro Billet dist., 7AL box, coil, and wires, No. 85 Autolite plugs |
| Total Timing: | 36 deg at 2,000 rpm |
| Exhaust: | Custom built by owner, 2.125-in primaries, 4-in collectors, 4-in pipes, 4-in Flowmasters |
| Power Adder: | None |
| Transmission: | Turbo 400, reverse manual valvebody, performance rebuild |
| Converter: | 9-in ATI, 4,500 stall |
| Shifter: | Fairbanks |
| Rear: | GM 12-bolt, 4.33:1 gears, Mark Williams spool and 35-spline axles |
| Brakes F/R: | Wilwood 10-in disc |
| Wheels F/R: | Weld 15x3.5 / Weld 15x10 |
| Tires F/R: | Moroso 15x7.10 / M/T 29.5x10.5x15 slicks |
| Tire Pressure F/R: | 35 psi/ 12.5 psi |
| Suspension Fr: | Stock, Moroso springs, Comp Eng. three-way adjustable shocks set loose 90/10, stabilizer bar removed |
| Suspension Rr: | Stock springs, Comp Eng. three-way adjustable shocks set to 50/50 driver side, 60/40 passenger-side Southside bars |
| Chassis Mods: | 10-point rollcage |
| Interior Mods: | Jaz racing seats |
| Exterior Mods: | VFN fiberglass hood and front bumper |
| Safety Mods: | 10-point rollcage, SFI-approved drivetrain parts, driveshaft loop, five-point harness, window net |
| Paint: | Yellow |
| Launch Technique: | Footbrake to 2,800-3,000 rpm |
| Best 1/4-mile ET, MPH Prior to Event: | 9.88 at 135.60 |
| STRIP TUNING LOG |
Run | Tuning | Launch RPM | Shift Point | 60-FT | 1/8 E.T./MPH | 1/4 E.T./MPH |
| 1 | No. 82 Jets front carb, No. 76 Jets back carb | 3,000 | 6,500 | 1.40 | 6.41/107.33 | 10.08/133.03 |
| 2 | No. 81 Jets front carb, No. 75 Jets back carb | 3,200 | 6,500 | 1.42 | 6.36/107.64 | 10.04/132.34 |
| 3 | Same, No. 74 Jets back carb | 3,200 | 6,500 | N/A | N/A | 10.04/132.54 |
| 4 | Same, No. 73 Jets back carb | 3,000 | 6,500 | 1.45 | 6.46/107.58 | 10.13/133.37 |
| 5 | Same | 3,000 | 6,500 | 1.39 | 6.31/108.03 | 9.97/133.45 |
| Run Notes: 4) Removed mufflers left in Second gear |