The Details
Gary Underwood's '67 Mustang Group II Hardtop
Engine
- '70 Boss 302 block, 0.030 over
- Vintage Ford Trans-Am forged-steel crank, 3.00-inch stroke, prepared by Henry Velasco
- Carrillo rods, standard 5.155 inches
- JE forged pistons
- '66 GT40 iron cylinder heads, 1.90 intake and 1.60 exhaust titanium valves and retainers
- Custom Crower solid roller cam, roller lifters, roller rockers, and pushrods
- Original Ford dual four-barrel aluminum intake
- Twin Holley "SK" 615-cfm factory race carbs
- GT40 tach drive distributor
- Custom stepped headers by Joe Ellis, Burns collectors
- Aviaid oil pan and windage tray
Transmission
- Iron-case T-10 close-ratio four-speed built
by Randy Gillis - McLeod twin-disc clutch
Rearend
- 9-inch
- 3.70-4.57 gears (dependent upon race conditions)
- Detroit Locker differential
- Speedway Engineering 31-spline axles
Suspension
- Front: Koni double-adjustable shocks, Vogtland springs, lowered upper control arms, Kar Kraft spindles, 15/16-inch sway bar with spherical bearings
- Rear: Koni double-adjustable shocks, custom King leaf springs, Watt's link by Terry Doty
Brakes
- Front: mid-'60s Lincoln disc
- Rear: 2-1/2-inch Galaxie drum
Wheels
- Front: American Racing magnesium, 15x8
- Rear: American Racing magnesium, 15x8
Tires
- Front: Goodyear Sports Car Specials, 6.00-15
- Rear: Goodyear Sports Car Specials, 7.00-15