Chevelle Engine Options: 1967

79873_Front_3-4_WebWhen the 1967 model-year Chevelle was released, there was very little that changed from the previous year. It did however feature a new front-end design with the fenders having a protruding edge, and a grille that jutted forward with them. The tail lights also wrapped around the rear corners of the car, and were squarer as opposed to the long rectangular shape of the previous year.

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The 1967 Chevelle did have better driving characteristics with the addition of more aggressive tires, and front disc-brakes. A new model was introduced, the Concours, which was merely a station wagon with wood grain sides.

The 300 and 300 Deluxe remained relatively unchanged as the Chevelle’s bare-bones model. The Deluxe did however, offer different interior colors and more expressive trim. Both were offered as two and four-door sedans, while the Deluxe had the added option of a four-door wagon.

The Malibu continued to lead the model as the top-selling Chevelle, and would continue to do so, as it offered the most model options: four-door sport sedan, two-door sport coupe, convertible, four-door sedan, and two-seat station wagon.

(right) The Air Injector Reactor (AIR) system was a new emissions-controlling device that pumped air into the exhaust manifolds. The AIR system consisted of the air pump, a fuel mixture-control valve, air manifold tubes, and air injection tubes (one per cylinder). (left) The Positive Crankcase Ventilation (PCV) system utilized manifold vacuum to draw crankcase vapors into the engine to be burned. Filtered air was drawn through the engine, through the PCV valve, and into the intake manifold.

In 1967, there were seven available engine choices when ordering the Chevelle. When the new cars rolled into the showroom, the previous year’s standard 194ci six cylinder had been dropped from the lineup. This made the 140 horsepower 230ci six cylinder the Chevelle’s base engine. However, there was a new choice for those wanting the six cylinder engine, as buyers could now get the 250ci version with 155 horsepower. While the four-barrel equipped 283ci engine was also dropped, a 283ci engine was still available, but only with the Rochester two barrel carburetor.

With 195 horsepower, the 283 was handily choked in the power department. RPO L30 got you a 327ci engine with 275 horsepower, or by stepping up to an L79 engine, you got a delivered 325 horsepower. The L79 engine featured larger valves, a compression ratio of 11.0:1, and an aluminum high-rise intake with a Holley carburetor.

396

When it came to choosing a big block engine in the Chevelle, the 396 was still the only engine of choice. Be it good or bad, 1967 saw some revisions made to the 396ci engine lineup. The base 396ci engine (RPO L35), still boasted 325 horsepower, and still used a cast-iron intake manifold with a single Quadrajet carburetor. There are rumors that a Holley carburetor did get placed on some 325 horsepower engines. A depressing announcement for Chevelle fans in 1967 was the announcment that the L34 396ci engine got a reduction in power output. According to GM, it now only delivered 350 horsepower instead of the previous year’s 360 horsepower. Many still feel that this was just a numbers game to appease some in corporate, and the engine didn’t really lose any power. To add insult to injury, GM deleted the L78 396ci engine from the Chevelle lineup. Both of these changes were a result of a new GM rule governing the horsepower guidelines for all cars except the Corvette. That being said, it has been reported that approximately 612 cars did receive the L78 engine as a dealer-installed option. In an attempt to meet ever-increasing emissions standards, 1967 would also be the first year that the Air Injection Reactor (RPO K19) was used on the L78 engine.

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The factory four-speed shifter in the 1967 Chevelle featured a reverse lock-out mechanism.

The available manual transmissions in the Chevelle were either the standard three-speed (even with the SS 396), or one of the three optional four speeds. The four speed was once again available in a wide-ratio Muncie M20, the close-ratio M21, or the beefier-built M22 Rock Crusher. This was the first year that a three-speed automatic transmission was available in the SS 396 Chevelle. RPO M40 got you a Turbo 400 transmission, but the Powerglide was still the standard automatic-transmission in all Chevelles.

About the author

Randy Bolig

Randy Bolig has been working on cars and has been involved in the hobby ever since he bought his first car when he was only 14 years old. His passion for performance got him noticed by many locals, and he began helping them modify their vehicles.
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