Simpson Machine in Muncy did the engine, with Dave Bitler handling the assembly. Mechanically, the only changes to the engine are a .030-inch overbore and a set of corresponding 10.5:1-compression Sealed Power pistons. Otherwise, the 340 Six Pack carries much the same hardware it did when new, including a steel crank and rods, original-type dual-point distributor, and a factory-grind hydraulic cam. A new clutch sits between it and the Hurst-shifted A-833 four-speed transmission. The exhaust is also as-original, down to its front-entry/front-exit mufflers and big, chrome, dealer-installed, side-exit "megaphone" tips.

Underneath, the chassis received all-new parts, while keeping unique-to-T/A items like the rear sway bar, and E60-15 front tires and G60-15s in back, each pair on 15-inch steel Rallye wheels.

A new interior kit was sourced from YearOne, and B&W Upholstery in nearby Turbotville, Pennsylvania, installed it.

Marvin says the T/A is especially fun to drive on the twisty roads near his home in Susquehanna Valley. "It's beautiful," he says. "I wanted to get a [personalized] license plate number, but it was already taken. I wanted "18 AGAIN" because that's exactly how I feel when I drive it. It's a four-speed car, and when you're going through the gears, and you hear that exhaust, you shift and it starts all over until I get it into high gear, when I'm usually running about 90 mph."

Marvin says his wife wants them to get a "HIS TA" plate for this car and a "HER TA" plate for her Panther Pink T/A.

Fast Facts

  • '70 Dodge Challenger T/A Coupe
  • Owner: Marvin Charles
  • Muncy, Pa

    Mopar Power
    Engine: 340 Six Pack, with unique-to-this-engine cylinder heads with a different port configuration than the heads used on the four-barrel 340s. Originally assembled at Chrysler's Mound Road engine plant near Detroit, this engine was restored at Simpson Machine in Muncy, Pennsylvania, with assembly by Dave Bitler. The only change from OEM is a .030-inch overbore and Sealed Power pistons (compression ratio: 10.5:1). All other components are either OEM stock pieces, or reproductions of original parts, including the Chrysler dual-point ignition, Edelbrock intake manifold, and Holley carburetors.

    Transmission: A-833 four-speed manual, with Hurst Pistol grip shifter.

    Rearend: 8-3/4 ring gear, with a Sure Grip differential.

    Sure Grip
    Suspension: Restoration of original Challenger T/A chassis included replacement torsion bars/rear leaf springs, heavy-duty shock absorbers, and front/rear sway bars (rear bar was unique to the T/A).

    Wheels: Wheels are 15x7-inch Chrysler Rallye road wheels with E60-15 tires in front, G60-15 tires in rear.

    High Impact
    Body: Original all-steel Unitbody (with OEM fiberglass hood and rear spoiler) was refinished by Whipple's Auto Body, Hughesville, Pennsylvania.

    Paint: Main body color is a two-stage, basecoat/clearcoat V2 Hemi Orange. Whipple's also applied the reproduction T/A graphics.

    Interior: Originally built with a black interior, with Rallye dash cluster, front bucket seats, and no console. A reproduction black vinyl interior kit from YearOne was installed by B&W Upholstery, Turbotville, Pennsylvania.