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The 1973–1974 L82 was a "performance" version of the 350 that still used the casting number 624 76cc chamber "2.02" heads but with a Rochester Quadra-jet 4bbl carburetor and dual-plane aluminum intake manifold, the earlier L46 350 hp (261 kW) 350 hydraulic-lifter cam, and 9.0:1 compression forged-aluminum pistons producing 250 hp (186 kW ...
The Chevrolet Gemini small-block engine is a dual-overhead cam (DOHC) V8 engine designed by General Motors.While technically a small-block engine because of its bore spacing of 4.4 inches, [1] [2] General Motors engineers do not consider it to be a part of the traditional Chevrolet small block lineage because of the substantial reworking, specialized development, and unique technical features ...
A 4-barrel carburetor was mated to a high-rise, dual plane intake manifold feeding high-flow cylinder heads that are still considered among the best of that era. [citation needed] Its big ports used 2.02 in (51 mm) intake and 1.60 in (41 mm) exhaust valves. An aggressive cam was fitted to take advantage of the much better breathing top end.
The intake was to be a single Carter ThermoQuad, of greater flow than any previously used, on a dual-plane intake manifold, [5] while dual four-barrels were never even considered, in the face of toughening emissions standards. [1] A split-level (vertically split, rather than horizontally divided) intake was also experimented with. [5]
The LS6 shares its basic block architecture with the GM LS1 engine, but other changes were made to the design such as windows cast into the block between cylinders, improved main web strength and bay to bay breathing, an intake manifold and MAF-sensor with higher flow capacity, a camshaft with higher lift and more duration, a higher compression ...
The Z/28 option featured a high-output small-block 302 cu in (4.9 L) V8 that had been designed for racing in the 5 litre (305 cu in) class in the then popular Trans-Am racing series. It had a 3 in (76.2 mm) stroke crankshaft with 4 in (101.6 mm) bore , an aluminum intake manifold , and a 4-barrel vacuum secondary 780 cfm Holley carburetor .