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In 1969, it was used in almost all car lines—Camaros, Caprices, Impalas, El Caminos, Chevelles, and Novas. The 1969 L48s use a hydraulic cam, 4bbl Quadrajet carburetor, cast pistons, 4-bolt main casting number 010 blocks and casting number 041 or 186 heads. Power output was 300 hp (224 kW) SAE and 380 lb⋅ft (515 N⋅m) torque.
The Chevrolet Inline-4 engine was one of Chevrolet's first automobile engines, designed by Arthur Mason and introduced in 1913. Chevrolet founder Billy Durant, who previously had owned Buick which had pioneered the overhead valve engine, used the same basic engine design for Chevrolet: exposed pushrods and rocker arms which actuated valves in the detachable crossflow cylinder head.
Chevrolet big-block V8s; Chevrolet small-block V8s; GM Vortec 4300 90° V6; GM Iron Duke RWD inline 4 (early RWD Variants, later versions may use a FWD pattern, and have two possible starter locations) Jeep with GM Iron Duke inline 4 2.5L/151 in 3 (1980-1983).
With a finished weight of 36 pounds (16 kg), the block weighs 51 pounds (23 kg) less than the cast-iron block in the Chevy II 153 cu in (2.5 L) inline-4. Plating the piston skirts was necessary to put a hard iron skirt surface opposite the silicon of the block to prevent scuffing. The plating was a four layer electro-plating process.
It is widely accepted [citation needed] however that the minimum requirement for a vehicle to be Number matching (or matching numbers, depending on local terminology) is for the original Chassis number and/or Vehicle Identification Number (VIN) to match to the engine block, if that is how the original manufacturer identified it, and the data ...
With an identical bore and stroke of 4 + 1 ⁄ 16 in (103.2 mm) and 3 + 3 ⁄ 4 in (95.3 mm) it was precisely half the displacement of the 389 and shared numerous parts with the V8, [4] yet weighed considerably more than half as the engine lower half and block casting were not simply divided down the middle.
It was the first V8 engine with a single-engine block casting, putting a V8 into an affordable car for the first time. [4] The communal water jacket of monobloc designs permitted closer spacing between cylinders. The monobloc design approach also improved engines' torsional rigidity as cylinder numbers, engine lengths, and power ratings increased.
Engine displacement was a factor of the bore: the 250 cu in (4.1 L) has a 3 + 1 ⁄ 2-inch (88.9 mm) bore, 287 cu in (4.7 L) 3 + 3 ⁄ 4 inches (95.3 mm), and the 327 cu in (5.4 L) a 4-inch (101.6 mm) bore. A number indicating the bore size is cast on the top of the engine block's flywheel housing immediately behind the right bank cylinder head.