Who: Shannon Medley
What: 1966 Chevy II
Where: Ringgold, Georgia
Engine: Shannon bought the LT1 complete for $500. It had 175,000 miles on it, but he didn't mind the wear and tear. He yanked the heads and did some mild porting but retained the 1.94- and 1.50-inch valves for the sake of simplicity and cost. A set of Comp Cams 1.6 roller tip rockers is pretty much the only modification in the long-block. The stock fuel tank is in place, but a 255-lph Walbro pump feeds the LT1 with 93-octane pump gas. An MSD 6AL box and Timing Control keep the engine alive under heavy doses of nitrous. Shannon freed up a few horsepower by swapping to a Meziere electric water pump, and then he bolted on a set of swap-meet headers with 15⁄8-inch primaries. A pair of Flowmaster two-chamber mufflers and 21⁄2-inch piping help to offer a low rumble, but even a trained ear wouldn't expect this thing to run mid-6s.
Nitrous: This nitrous system is so simple it makes you wonder how it works so well. It's a dry shot, which is generally a quick way to kill an engine, but Shannon has it figured out and actually set it up with two stages of spray. He leaves the line on a 100hp shot (actuated by a wide-open throttle switch), and then piles on a 125hp shot on top of that as soon as the car transfers weight. The nitrous nozzles are simply screwed into the plastic intake elbow.
Transmission: Yet another frustratingly simple aspect of Shannon's Chevy II is the transmission and torque converter. The TH350 three-speed has a B&M Shift Improver kit, but that's it. And the converter? It's a bone-stock replacement unit, which Shannon likes because it is super-tight. It only stalls to 1,500 rpm, but Shannon sprays it hard and generally cuts a 1.45 60-foot time.
Chassis: There isn't much to say about the chassis. This thing is bone-stock, aside from some swap-meet slapper bars and Summit Racing 90/10 shocks. The original leaf springs are completely worn out, but the car transfers weight really well, so that's a good thing. The rearend is an 8.2-inch 10-bolt, which has stock axles, a mini-spool, and 3.08:1 gears. Shannon says the car had Aerospace discs brakes up front when he bought it, so he kept it as is. The car does not have subframe connectors or a rollbar, but it's a full-second quicker than the rollbar threshold at his local track.
Exterior: Shannon straightened up the body and gave it one of his trademark rattle-can flat-black paintjobs. It's missing a lot of trim and emblems, but the car has a decent body and has lots of potential, if he ever decides to paint it. The only body modification is the master kill switch in the back-up lens, as well as the Harwood fiberglass hood, which Shannon picked up for $100.
Interior: It's not pretty, and it probably isn't very safe, but the ratty interior definitely adds to the car's sleeper appeal. A few necessary gauges and a B&M Shift Improver are the only modifications inside.
Wheels/Tires: The Chevy II rolls on a set of Weld Pro Star wheels, measuring 15x4 inches, up front, and 15x7 inches, out back. Shannon has run a set of 26x8.5-15 slicks in the past, but recently switched to a set of Mickey Thompson drag radials, sized at 235/60R15. The tiny tires handle the hard launches very well.
Performance: This is where it gets interesting. Shannon's Chevy II looks rough and sounds tame, so it gets some serious attention when it yanks the left front tire off the line and blasts down the eighth-mile. So far, he has run a best of 6.59 at 103.9 mph (10.20s at 130 in the quarter-mile). Let's not forget about the 24 mpg when Shannon drives it to work.
Budget: Shannon laid down $4,500 for the solid Chevy II body and bought the LT1 engine for $500. Then, add in a couple grand for odds and ends, and he has a grand total of $7,500 invested in the whole thing.