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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 ...
Pontiac V8 engine with triple two-barrel Tri-Power carburetor setup. For 1957 the V8's stroke was increased to 3.5625 in (90.49 mm), for a displacement of 347 cu in ...
In 1967 Chevrolet introduced the L71, a variant of the L72. This new engine had three 2-barrel carburetors - known as "tri power" - in lieu of the single 4-barrel of the L72, and a 435 hp (324 kW) rating. Aside from the intake setup, the two engines were identical.
Introduced in the middle of the 1957 model year, [6] the 1957 and 1958 J-2 Golden Rocket had three two-barrel (twin choke) carburetors with a vacuum-operated linkage. Only the center carburetor was mechanically connected to the throttle pedal, and it was the only one equipped with a choke.
The Bonneville also had more powerful standard V8 engines than other full-sized Pontiacs, including the 389 cu in (6.4 L) or 400 cu in (6.6 L) V8s with four-barrel carburetors (power ratings of 303 to 340 hp (226 to 254 kW) depending on year) with many optional V8 offerings, such as the availability of the Tri-Power (three two-barrel carburetor ...
It was initially offered as the "non-catalogued" option S42 in Chryslers (the number of such produced is uncertain), offered with 373 or 385 hp (278 or 287 kW) via a single 4-barrel carburetor (11.0:1 or 12.0:1 compression ratio, respectively), or 413 or 421 hp (308 or 314 kW) via ram-inducted dual four-barrel carburetors (with the same ...
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The 1970 model year Camaro had a 250 hp (186 kW) high-performance two-barrel Rochester carburetor. In 1971, it dropped to 245 hp (183 kW), and net performance further dropped to 165 hp (123 kW) for 1972 and 145 hp (108 kW) for 1973–1976. It was basically the two-barrel version of the L48 350. It was produced until the 1976 model year.