Joe Greeves
February 4, 2014

One of the best things about our hobby is that you don’t have to get it right the first time. You can find the car of your dreams at a swap meet, add a little elbow grease and a few new parts, then drive it for a while until it’s time to get it right again. When time and budgets allow, work in a little cosmetic surgery, freshen up the paint, and the joy continues. That’s similar to the process that Terry Lee Oeffner used with his ’70 Mach 1.

Terry is a sales rep living in Ocala, Florida, and became a certified automotive enthusiast in 1996, the same day he bought this car. It was his first unique car, found at a car corral and in a very poor shape. Although Terry is not a mechanic, he had his own handyman business for many years and felt comfortable in tackling much of the rejuvenation process himself. Over a two-year period, the dusty derelict was transformed into a (almost) dream driver, thanks to some bodywork, paint, and upgrades to the powertrain. Although the car was great fun to drive, it was still short of the goal since Terry’s plan from the outset was to create a highly modified, "Show 'N’ Go” Mach 1. About 2010, the timing was right and the urge to upgrade began taking the car to a whole new level.

Finding the right shop for the job always takes some careful investigation and for Terry, the problem was solved almost by accident. He was having muffler work done at the Muffler Doctor across the street from Scrog’s Hot Rods, in Belleview, Florida. After a positive recommendation and introduction by Mike, the muffler guy, Terry and owner Mike Scroggie hit it off and began discussing ideas that Terry had for the car. After a tour of the shop and seeing Mike’s work, Terry was convinced that Mike was the man for the job.

Originally, the plan called for just new paint, but a careful investigation revealed some significant metal work issues. Repair work done in the past had covered up flaws and as a result, Mike began the rejuvenation by installing new rear quarter-panels and by correcting several hidden rust areas.

Once the body and running gear were up to speed, the engine was next and Terry knew exactly what he wanted; a stroker kit on his 351 Cleveland would bring the displacement up to a very healthy 393cid. Doing research on the Internet, Terry found A&S Motorsports in Riverview, Florida—specialists in Fords and Ford racing motors. He pulled the engine and delivered it to them, but before long, some major changes occurred. The team at A&S recommended against using the worn original block and found a good used one instead. The combination dyno’d at 440 hp at 5,600 rpm. Once the powerplant was reinstalled in the chassis, Terry began an elaborate detailing process that transformed the engine into an instant photo op whenever he lifts the hood.

Interior upgrades began by recovering the Mach 1 high back buckets and door panels in black vinyl, with vinyl and carpet added to the fold down rear seat. Terry replaced all of the glass to complete the factory-fresh look.

Since the lines of the classic Mach 1 were what attracted him to the car in the first place, Terry kept the exterior changes to a minimum. Modern halogen headlights, LED sequential taillights, new chrome bumpers, and a ’69 rear valance with dual exhaust tips personalized it just enough. The team at Scrog’s spent many hours refining cut lines, door gaps, and even pie-cutting the hood to ensure the chrome trim lined up properly. The finishing touch was the bright DuPont ChromaBase Competition Orange paint, teamed up with shiny black accents for the center stripe, louvers, spoiler, and tail. Custom graphics by Budget Printing in Ocala created the 393 Cleveland lettering on the hood.

How did the "Show 'N’ Go” Mustang turn out? To say that Scrog’s Hot Rods owner, Mike Scroggie, was pleased with the job would be an understatement, since he now proudly displays the Mach 1 on his business cards! While creating great cars is certainly an amazing accomplishment, the decades-long friendships that develop during the build become the real treasures. Terry and Mike joke that they’ve had a love/hate relationship since the beginning. Mike says Terry hates to write the checks, but Mike loves to cash them! Over the years, they have become good friends and Terry uses the car to promote Mike’s business at car shows. Terry says he could not have accomplished all this without the love, support and encouragement of his lovely wife, Pam. She never once hesitated when he needed something for the Mustang, saying "If you want it, get it!” Thanks, Baby!

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The Details

Terry Lee Oeffner’s ’70 Mustang Mach 1

’70 351 Cleveland, bored and stroked to 393ci
4.030-inch bore
3.85-inch stroke
Probe 4340 forged steel crank
Probe 4340 forged steel connecting rods
Probe 2618 forged aluminum 9.7 to 1 pistons
Moly-Pre Fit piston rings
Comp Cams Magnum 32-541-8 hydraulic roller retrofit cam, lift 0.578/0.578, Duration at 0.50 230/230, rpm range 2,500-6,000
Comp Cam stainless steel roller rockers
Pro-Comp aluminum heads, 2.19-inch intake/1.71-inch exhaust valves
Holley Street Avenger 770-cfm carburetor
Edelbrock Air Gap ceramic-coated intake manifold
MSD 8570 Ready-to-Run ignition and MSD wires
March Style Track serpentine pulley system
C-6 three-speed automatic transmission with shift kit
B&M MegaShifter
Ford 9-inch
Traction Lok
31-spline Moser axles
3.50 gears
Hooker headers
2.5-inch dual exhaust
QTP electric cutouts
MagnaFlow stainless steel mufflers
Front: Factory upper/lower control arms with 1-inch lowering springs, shocks, 1-inch sway bar, chrome Monte Carlo bar, and Total Control Products rack-and-pinion power steering
Rear: Factory leaf springs, subframe connectors, shocks, traction bars
Front: SSBC disc, 11-inch rotors, two-piston calipers
Rear: SSBC disc, 11-inch rotors, two-piston calipers
Front: American Racing Torq Thrust II, 17-inch, chrome-plated
Rear: American Racing Torq Thrust II, 17-inch, chrome-plated
Front: Yokohama AVID ENVigor P225/45R17
Rear: Yokohama AVID ENVigor P245/45R17
Black vinyl interior covering high-back bucket seats, door panels, and fold down rear seats; black carpet and headliner; Auto Meter gauges in a modified center console; Pioneer stereo with component sets and separate tweeters in the doors, component sets in the rear quarter panels; Vintage Air
Halogen headlights; sequential LED taillights; ’69 rear valance with dual exhaust tips; all new glass; new chrome bumpers; subtle pie cut hood with factory twist hood locks; DuPont ChromaBase Competition Orange with black accents and center stripe accomplished by Scrog’s Hot Rods in Belleview, Florida