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These engines used a multipoint fuel-injection system, with six Multec II fuel injectors mounted at each intake port on the manifold. GM recommends the Multec II spider assembly (which is also available for the L30 and L31 small block V8 motors) as a replacement for the 1996–2002 SCPI injector/spider assembly since the poppet valves have been ...
It offers the airflow of more expensive heads, at a much lower cost. It does, however, require a specific intake manifold (the L31 has four bolts per head attaching the intake manifold, as opposed to the "traditional" six bolts per head found on older Chevrolet small-blocks). Chevrolet's L31 was replaced by GM's LS-based 5.3L LM7 and 6.0L LQ4.
Carburetors used as intake runners A cutaway view of the intake of the original Fordson tractor (including the intake manifold, vaporizer, carburetor, and fuel lines). An inlet manifold or intake manifold (in American English) is the part of an internal combustion engine that supplies the fuel/air mixture to the cylinders. [1]
Unlike the later, second-generation 427, it was based on the W-series 409 engine, but with a longer 3.65 in (92.7 mm) stroke. A high-rise, two-piece aluminum intake manifold and dual Carter AFB carburetors fed a 13.5:1 compression ratio to produce an under-rated SAE gross 430 hp (321 kW) and 575 lb⋅ft (780 N⋅m).
An updated version of the Generation III 3400 engine. It includes a new block, intake manifold, oil pan, engine cover, and fuel system, as well as electronic throttle control. [11] It was built in China and shipped to Canada for installation in the Chevrolet Equinox and Pontiac Torrent. The LNJ makes 185 hp (138 kW) and 210 lb⋅ft (285 N⋅m).
It was its own separate engine design, based on a single block casting, [19] which had four exhaust manifolds, two carburetors and intake manifolds, and two distributor caps driven by a single distributor drive, [19] plus other parts from the 351 V6. A total of 56 major parts are interchangeable between the Twin-Six and the other GMC V6 engines ...
Introduced in the MY2012 Holden Commodore SV6 and the MY2012 Chevrolet Camaro LS/LT, it is 20.5 pounds (9.3 kg) lighter than the LLT, thanks to a redesigned cylinder head, integrated exhaust manifold, and composite intake manifold. Other components like the timing chains, fuel injectors, intake valves, and fuel pump have also
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 ...