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L05s were used primarily with casting number 14102193 (64cc combustion chambers) cylinder heads with swirled intake ports—the intake ports were designed for fuel economy (the design was also shared with the 103 heads used on the 4.3L with TBI). The swirl ports (known to GM as a vortex chamber) along with the irregular shape of the combustion ...
It contributed to the casting needs provided by Saginaw Metal Casting Operations and Defiance Foundry. After the Corvair was cancelled the factory switched to casting the engine block and cylinder heads for the Chevrolet 2300 engine used in the Chevrolet Vega GM H platform , the Iron Duke engine used in both the GM N platform and GM L platform ...
Starting around 1925 engine blocks and cylinder heads were now developed at each brand but were cast at Saginaw Metal Casting Operations. [3] In the mid-1960s, there were 8 separate families of GM V8 engines on sale in the USA. [4] [1] By the 1970s, GM began to see problems with their approach.
RPO decoder (for newer vehicles). Beginning as early as 1967, [2] and to all their models since 1984, GM attached a Service Parts Identification (SPID) label. The label is most often located on the back of the glovebox door, on the inside of the trunk lid, or on the bottom of the spare tire cover.
[5]: 22 GM convinced Reynolds Aluminum to build an aluminum reduction plant nearby to supply it. Aluminum parts included the block, heads, flywheel housing, crankcase cover, clutch housing and pistons. 92 lb (41.7 kg) of aluminum was used in each engine. New casting and machining techniques had to be developed to produce the light-alloy parts.
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The Chevrolet 2300 is a 2.3-liter straight-four engine produced by the Chevrolet division of General Motors for the 1971 to 1977 model years of the Chevrolet Vega and Chevrolet Monza.
The following year the motor became available in the compact Chevy II also. For the 1970 model year the 396 was bored 0.03 in (0.76 mm), resulting in a 402 cu in (6.6 L) engine. Despite this, the motor was still badged as a 396. 1970 was also the final production year for the L78.