Your author met Bob at the SyTy Nats last year, but it wasn't until the Hot Rod Power Tour that he first heard that familiar whistle from the Maryland-native's DMH electric cutout. For most street driving the cutout is left closed as the fumes exit a MagnaFlow 3-inch exhaust, fed by ATR turbo headers and a 3-inch downpipe. Virtually all the wrenching on this truck was done by Bob himself, including beefing up the 700R4 as well as adding CalTracs traction bars, QA1 adjustable shocks, Energy Suspension bushings, Dynotech driveshafts, and a tubular front suspension. | 
Nitto drag radials are the rubber of choice at all four drive wheels, mounted on ZR1 17x9.5 front and 17x11 rear rims. The brakes have also been upgraded using Baer 13-inch binders with Eradispeed drilled and slotted rotors, and aluminum rear drums for weight savings. |  |
DATA FILE Car: 1993 GMC Typhoon
| Owner: | Bob Galla |
| Block: | Chevy V-6, 266 ci |
| Compression ratio: | 8.35:1 |
| Heads: | GM L35, ported and polished by Jim's Performance and Machine, 2.02 intake, 1.60 exhaust valves |
| Cam: | Crane Cams hydraulic roller, 194/204 duration at .050, .407/.429-inch lift |
| Pushrods: | COMP Cams chrome moly |
| Rocker arms: | Crane Cams 1.6 ratio |
| Pistons: | TRW forged |
| Rings: | Speed Pro |
| Crankshaft: | Stock |
| Rods: | Oliver forged |
| Throttle body: | Stock with TPI airfoil |
| Fuel injectors: | PTE 50 lbs/hr |
| Fuel pump: | ATR Double Pumper |
| Ignition: | MSD coil and wires, stock distributor, NGK plugs |
| Engine management: | F.A.S.T. tuned by Anderson Performance |
| Turbo: | PTE T63E |
| Boost: | 25 psi |
| Intercooler: | ATR water-to-air, Griffin heat exchanger |
| Wastegate: | ATR external |
| Exhaust system: | ATR turbo headers, 3-inch downpipe, DMP cutout, Random Technology cat, MagnaFlow 3-inch cat-back |
| Transmission: | 700R4 built by owner |
| Torque converter: | TCS Billet 3100-stall |
| Driveshafts: | Dynotech aluminum |
| Front suspension: | Custom chrome moly tubular control arms, QA1 coilovers, stock sway bar |
| Rear suspension: | CalTracs traction bars, QA1 shocks, stock leaf springs |
| Rear end: | Stock, 3.42 gear, posi |
| Brakes: | Baer 13-inch front, aluminum drums rear |
| Wheels: | ZR1 17x9.5 front, 17x11 rear |
| Front tires: | Nitto drag radial 275/40/17 |
| Rear tires: | Nitto drag radial 315/35/17 |
| Fuel octane: | 112 |
| Race weight: | 3,800 lbs |
| Best ET/mph: | 11.2 at 119 |
| Best 60-ft. time: | 1.58 |
| Current mileage: | 95,000 |
| Miles driven weekly: | 100 |