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An optional high-performance Sprint version featured high-compression pistons, hotter cam, dual valve springs, split/dual exhaust manifold, stronger coil, and the then new Rochester Quadrajet carburetor. rated at 207 hp (154 kW). [5] Power was increased to 215 hp (160 kW; 218 PS) in 1967.
The Iron Duke block formed the basis of Pontiac's Super Duty four-cylinder racing engines of the 1980s, the last in a line of high-performance Pontiac Super Duty engines. The engines were featured in NASCAR's Charlotte/Daytona Dash Series, the IMSA GT Championship (in GTP and GTU class cars), and even in American Power Boat Association racing ...
The four-barrel 400 was a popular performance option for many of Pontiac's cars. When fitted with other high-airflow components, it produced a good balance of low-end torque and higher-RPM power. In the 1968 Pontiac GTO it was given a 10.75:1 compression ratio and tuned to deliver 360 horsepower and 445 foot-pounds of torque. [5]
Tri-Power was the name for an arrangement of three two-barrel carburetors [1] installed on large performance V8s offered by the Pontiac Division of General Motors in the late 1950s and 1960s. [ 2 ] Three individual Rochester 2G carburetors were arranged inline on the intake manifold, the center one operating normally and the outer two acting as ...
A Silver streak 8 in a 1949 Pontiac Streamliner - note the large intake silencer leading to an oil-bath air cleaner on the left side of the engine. The Pontiac straight-8 engine is an inline eight-cylinder automobile engine produced by Pontiac from 1933 to 1954. Introduced in the fall of 1932 for the 1933 models, it was Pontiac's most powerful ...
Aftermarket port fuel injection and re-engineered cylinder heads have been the norm, although parts for the inline-six, such as aftermarket intake manifolds (from a three-carburetor setup or a single 4-barrel carburetor), exhaust headers, and hybrid cylinder heads based on Chevrolet's small-block engine are costlier than those for the small ...