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The Quadrajet is a four barrel carburetor with a "spread bore" throttle plate, made by the Rochester Products Division of General Motors. Its first application was the new-for-1965 Chevy 396ci engine .
[citation needed] The last major carburetor design by Rochester was the Varajet II, [citation needed] essentially a Quadrajet halved lengthwise, [citation needed] and was one of the few successful progressive 2-barrel carburetors. [according to whom?] It was installed on 4- and 6-cylinder engines from 1979 to 1986. [citation needed]
The final Chrysler use of four-barrel Carter carburetors was the Thermo-Quad, which used a lightweight thermoplastic float bowl, on the most powerful Chrysler engines. [1] Carter produced Rochester Quadrajet carburetors for their rival maker whenever demand outpaced Rochester's ability to make them. They were identical to Rochester's units ...
Some early 307s were painted GM Corporate blue, but most were painted satin black. It was used in most Oldsmobile models, as well as those from Buick, Cadillac, Chevrolet, and Pontiac. Every 307 used a four-barrel carburetor, which was a variant of the Rochester Quadrajet, usually the CCC (Computer Command Control) Quadrajet.
The LA engine was available until 1991, when it was superseded by the Magnum version. It used hydraulic lifters and a two-barrel carburetor for most of its production, though four-barrel Carter Thermo-Quad and Rochester Quadrajet carburetors were used in police applications starting in 1978 and 1985, respectively. The 318 two-barrel ELD ...
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 200 cu in (3.3 L) V6 was only produced for 1978 and 1979. It was available only with a 2-barrel carburetor. In 1978, the 200 cu in (3.3 L) used the Rochester 2GC carburetor and in 1979 it used a Rochester Dualjet carburetor. The smaller Dualjet carburetor caused a slight decrease in power.
While these cars all used Rochester Quadrajet Electronic four-barrel carburetors, differences include an electronic (Detroit) versus vacuum (Arlington) Idle Load Compensator, as well as an electronic (Detroit) versus climactic (Arlington) choke system. The vin "9" engine is the high output version of the base LV2 307 vin code Y and shares most ...
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