
THE AUTO BUILDER
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The Grand National Roadster Show 2024
“The Grand Daddy of Them All,” The Grand National Roadster Show just took place this last weekend. Held annually in Pomona, California, is a premier event celebrating the artistry and craftsmanship of custom automobiles. Established in 1949, it has earned a reputation as one of the longest-running and most prestigious car shows in the world. Spanning multiple days, the show features an eclectic mix of meticulously restored classic cars, innovative hot rods, and custom-built vehicles, showcasing the creativity and passion of automotive enthusiasts. Attendees can marvel at the intricate details of each vehicle, from flawless paint jobs to finely tuned engines, and interact with passionate owners and builders.

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Some folks talk about the great muscle car wars of the ‘60s and early ‘70s, but it’s hard to find a car guy who experienced it, enjoyed it and still owns the same car. At 66 years of age, Mike Overly was able to experience the muscle car era during his twenties, which is the perfect time to go fast in a cool car. The car seen on these pages is a ’70 Mustang, one that Overly has owned since 1970. Less than a year old, the Mustang sat at a used car lot in Indianapolis, Indiana, wearing black paint and an asking price of $2,300. From his inspection, Overly knew the original owner had already upgraded to a Boss 429 hood and scoop, so it may have been raced in its short life—the 2,000 miles on the odometer were probably not the easiest of miles.

CIMTEX RODS SUPER CAMEO: PART 8
In part seven of our Cimtex Rods Super Cameo Buildup series, we covered the installation of our Stainless Works four-tube ZR1 headers and Cimtex Rods-fabricated 3-inch custom exhaust system, as well as the fabrication and installation of our Cimtex Rods-constructed 22-gallon fuel tank and the accompanying MagnaFuel fuel system. Now we’re going to cover the mockup of our Powerdyne BD-11A SilentDrive twin supercharger system. But first let’s digress and take a look at the big picture. One of the key criterion in our Cimtex Rods Super Cameo buildup was to elicit that all-important “wow” factor throughout the entire series. When it came to the engine, we didn’t want to install just any old run-of-the-mill, multi-carbureted GM small or big block, much less a late-model GM crate engine straight out of the catalog. Going in we figured that the Cimtex Super Cameo powerplant should be something special.
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HEMI WITH AN ACCENT
Frenchman Herve Caen and Two Americans, Dick Landy and Gary Hanson, Build the Proper European '68 Hemi 'Cuda
Chassis and Suspension
Because it will compete at dragstrips throughout Europe, it has some interesting equipment not normally seen on domestic drag cars of this caliber. But before we dwell on the not-so-subtle differences, here’s a rundown on the car: The tube chassis is the handiwork of Gary Hanson Race Cars in Pomona, California. The front suspension features Art Morrison springs and Koni shocks. Aft is a Christman’s Rear End Service 9-inch Ford differential packing 5.60:1 gears, a spool and hardened axles, all from Strange Engineering. The suspension includes coilover shocks, Panhard bar, a track locator bar and wheelie bars, all Hanson items. Stopping power comes from Wilwood four-piston disc brakes and a Simpson parachute.
Engine Build
The heart of this Mopar is its engine and transmission. It’s a DLI-built 438ci Chrysler Hemi (4.31-inch bore x 3.75-inch stroke) with 12.2:1 compression Ross pistons, Speed-Pro Moly rings, steel crankshaft, BME rods, Fluidamper balancer, special Crane roller camshaft ground to DLI specs (0.740-inch lift and 108-degree lobe centers, 0.025 lash), Smith Brothers pushrods, a Donovan geardrive, a Weaver dry sump and a 10-quart Milodon oil pan. Mark Weiss headers feature a set of 2.25-inch-diameter, 18-inch-long primary pipes that flow into 4-inch-diameter collectors.
The Hemi heads are Mopar aluminum, CNC-ported designs sporting lots of DLI prep. The combustion chambers are milled to 172 ccs. The oversize valves are Manley 230-inch intakes and 1.9-inch exhausts. The valve springs are triple-sprung Manleys and the titanium retainers are Manleys as well. The valvetrain features DLI 16:1 and 155:1 ratio roller rocker arms. The DLI-prepped Hemi heads work in harmony with a DLI sheetmetal X-Ram intake supporting a pair of 4500 Holley Dominator carbs, with jetting at #92 primary and secondary. Each carburetor flows 1250 cfm. In Europe, a 250hp nitrous setup is allowed, so this Hemi is outfitted with an NOS unit. Ignition is a Mopar distributor dialed in at 33 degrees total advance and assisted by an MSD 7AL-3 spark amplifier. The entire engine is buttoned together with top-quality ARP fasteners.
Transmission
The transmission is the tried-and-true Lenco three-speed, but there’s a twist. This trans also has a Coan 8-inch-diameter torque converter, or “fluid coupling,” which helps the launch characteristics and lessens driveline parts breakage. So what you do is launch the car and pull, and with 8-second quarter-mile times, the pulling occurs “right now.”
Dyno Numbers & Performance
Higher, at 6,000 rpm, it read 703 and 615 lb-ft, and the top numbers were 839 hp at 7,500 rpm and 632 lb-ft of torque at 6,600 rpm, and it continued to rev all the way to 8,500 rpm, but the numbers dropped off sharply. Add the 250 nitrous-assisted horsepower and the final number is a whopping 1089. Care to drive? Get in line, mon ami!





