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The coil-in-cap HEI distributor was retired, and an all-new electronic distributor design was used. The intake manifold to head bolt pattern was redesigned to improve gasket integrity—four of the center intake manifold bolts were drilled at 72° instead of 90° for the cast iron cylinder heads. Changes to the valve covers were also made.
For this inline-4 engine, 1-3-4-2 could be a valid firing order. The firing order of an internal combustion engine is the sequence of ignition for the cylinders. In a spark ignition (e.g. gasoline/petrol) engine, the firing order corresponds to the order in which the spark plugs are operated. In a diesel engine, the firing order corresponds to ...
It has four valves per cylinder, utilizes dual-overhead cams design, and features variable valve timing on the exhaust cam, a first for GM inline engines. When introduced, this engine's power was 270 hp (201 kW) at 6,000 rpm and torque was 275 lb⋅ft (373 N⋅m) at 3,600 rpm. 2003 saw a slight bump in power to 275 hp (205 kW), while torque was ...
The cylinder firing order was changed to 1-8-7-2-6-5-4-3 [46] so that the LS series now corresponds to the firing pattern of other modern V8 engines (for example the Ford Modular V8). 3.898 in. bore blocks (1997–2005)
The 213.3 cu in (3.495 L) was used by the Oldsmobile F-Series between 1932 and 1936 and also by GMC in their 1936 T-14 and T-16 trucks. [1] It used a 3 5/16" bore and 4 1/8" stroke and on its introduction in 1932 had a compression ratio of 5.3:1 and made 74 bhp at 3200 RPM.
By canting the angle of the NASCAR-mandated two valves per cylinder, significantly larger valves could be used. Both the Chrysler 426 Hemi and all Chrysler RB engines were oversquare , with the 426 Hemi and 426 Wedge sharing a 4 + 1 ⁄ 4 in × 3 + 3 ⁄ 4 in (108.0 mm × 95.3 mm) bore and stroke .
Firing order was 1-6-5-4-3-2. [8] This engine was last produced for the 2003 Dodge Dakota pickup. Starting in the 2004 model year, it was entirely withdrawn from production and replaced with the 3.7L PowerTech V6 engine. [16] Applications: 1992–2003 Dodge Dakota; 1992–2003 Dodge Ram Van/Dodge Ram Wagon; 1992–2001 Dodge Ram
A hemispherical head ("hemi-head") gives an efficient combustion chamber with minimal heat loss to the head, and allows for two large valves.However, a hemi-head usually allows no more than two valves per cylinder due to the difficulty in arranging the valve gear for four valves at diverging angles, and these large valves are necessarily heavier than those in a multi-valve engine of similar ...