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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 ...
It also features higher flowing cylinder heads sourced from the L92, a more aggressive camshaft with 0.551 in (14 mm) lift, a 10.7:1 compression ratio, a revised valvetrain with 0.236 in (6 mm) offset intake rocker arms, a high-flow intake manifold, and 47 lb (21 kg)/hour fuel injectors from the LS7 engine.
The Northstar engine is a family of high-performance 90° V engines produced by General Motors between 1993 and 2011. Regarded as GM's most technically complex engine, the original double overhead cam, four valve per cylinder, aluminum block/aluminum head V8 design was developed by Oldsmobile R&D, [citation needed] but is most associated with Cadillac's Northstar series.
SOHC design (for a 1973 Triumph Dolomite Sprint) . The oldest configuration of overhead camshaft engine is the single overhead camshaft (SOHC) design. [1] A SOHC engine has one camshaft per bank of cylinders, therefore a straight engine has a total of one camshaft and a V engine or flat engine has a total of two camshafts (one for each cylinder bank).
The valve stem axis is inclined 27° from vertical on both intake and exhaust. Initial cam timing was 15/53/53/15 with the same cam profile as the ET418 Coventry Climax FWE cam, which resulted in 100 bhp (75 kW; 101 PS) at 5700 rpm for the 1,498cc engine with a 9.5:1 compression ratio. 1,557cc production engines had 22/62/62/22 cam timing with ...
The "LZ" twin cam head was designed to give a power boost to the Datsun L series engine for competition purposes. There are two different LZ cylinder heads. The early head is the same thickness as a normal L series head. The engine using the first head was referred to as the L14 twin cam. There was no mention of Z in the title.
The intake manifold vacuum, with wide open throttle, is lower in these conditions, which causes the PCV valve to open and the crankcase gases flow to the intake system. [13] The greater flow rate of intake air during these conditions means that a greater quantity of blow-by gases can be added to the intake system without compromising the ...
The HJ 5.0L was a very different engine to the HT-HQ 308 though. It got a raise in compression from 9:1 to 9.7:1 and got a new camshaft which was basically the same valve timing as used in the HK-HQ SBC engines (prior to HJ the 308 used the 253's smaller camshaft but retarded 5 degrees).