April 6: Hornets Nest Region AACA show . . .
Read MoreCanonsburg, Pennsylvania Chevrolet dealer Don Yenko became a legend by building and marketing modified Chevrolets in the 1960s. His first project, the Yenko Stinger Corvair, arrived for 1966. The idea was to get the Corvair approved for SCCA racing, which was accomplished. The Stinger was available in 4 stages of tune, one of which was full-on race car.
When the Camaro debuted in 1967, the largest engine available from the factory was the already potent RPO L78 396 CID V8 that made 375 hp. Yenko replaced the 396 with a modified Chevrolet RPO L72 427 CID V8 in approximately 107 Camaros that year, and another 65 for 1968.
By this time, Chevrolet began to take notice and started working with Yenko through the COPO (Central Office Production Order) program to have the 427 installed at the factory. For 1969, approximately 198 Camaros and 99 Chevelles left the factory with engines normally not available through conventional channels. Yenko transplanted the 427 into approximately 37 Novas as well that year, something he later admitted wasn't a good idea.With new emissions standards and high insurance premiums knocking at his door, Yenko realized that a modified big-block in a small car wasn't going to work. His next idea was to offer a higher performance version of the Nova's standard 350 CID V8 in an attempt to fly under the radar. The most potent 350 available at that time was the RPO LT1 350 CID V8 from the Corvette that made 360 hp.
So Yenko headed back to GM and came up with a COPO program code for the 1970 Nova. The new Yenko Deuce started out life as a base 350 V8 car, (RPO L65 350 CID V8 that made 250 hp). Other required options were ordered that included power front disc brakes, a 4.10 positraction rear axle, and dual exhausts. When COPO 9010 was added, the base 350 CID V8 was replaced with the 360 hp RPO LT1 350 CID V8 from the Corvette.
For 1972, the 442 reverted back to an option package for the Cutlass, (instead of having its own series with its own style codes). This makes documenting an authentic 1972 442 much harder. This car's original window sticker, like the one seen in the photo above, confirms that it is one of the 1,171 442 convertibles made that year.
The 1970 SS454 Chevelle usually gets most of the attention thanks to its 454 CID V8 that was available in two stages of tune, (450 hp RPO LS6 and 360 hp RPO LS5). But the 396 CID V8 was also still available, (called the "SS396" even though the actual displacement was 402 cubic inches). This car features the mid-level RPO L34 396 CID V8 that makes 350 hp.
The "R" in the car's name stands for "race." The Cobra R was designed for the race track. Everything not associated with forward motion was deleted. Options and accessories normally found on a Mustang - power equipment, air conditioning, sound deadener, a back seat, etc - were not available on the Cobra R.
Model year 1971 was the beginning of the end for the traditional Muscle Car era. The outlook was bleak thanks to tightening emissions and safety standards coupled with rising insurance premiums. Ford managed to squeeze one final legit performer out of the factory before the end - The Boss 351 Mustang.
The Boss 351 Mustang is seen as both a high and a low in the car's history. The 351 CID "Cleveland" V8 under the hood makes 330 hp and 370 ft-lbs of torque. Power was put to the ground via a 4-speed manual transmission with a Hurst shifter and a 3.91 Traction-Lok rear axle. The mid-13-second quarter mile performance received generally positive reviews.
However, by 1971, the Mustang had grown once again and had become longer, wider, and heavier than it had ever been, drifting even further away from its roots. Yet somehow, the increase in size didn't translate to the interior which was described "cramped" by one contemporary magazine review. The fastback, or "SportsRoof," styling looked good. But the almost-horizontal rear window made for tricky rear visibility, (Car Life Magazine called it, "a good skylight"). Sales continued to drop during the three years covered by this restyle, (1971 - 73).
This very rare car is one of 1,806 Boss 351 Mustangs produced in its only year of 1971.The Maxwell-Briscoe Company began manufacturing automobiles around 1904 in Tarrytown, New York. One name change and several relocations later, the Maxwell Motor Company became one of the top automobile producers in the country. But by 1920, the company's fortunes had started to slip away. Walter P. Chrysler acquired the company in 1921 and merged it into his new Chrysler Corporation.
By 1925, the Maxwell name had been phased out and production halted. But the Maxwell automobile design continued to be improved and became the basis for Chrysler's entry-level brand Plymouth.