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In 1967, a new design high-rise cast-aluminum dual-plane intake manifold with larger smoother turn runners was introduced for the Z/28 that the 350 cu in (5.7 L)/370 hp 1970 LT1 also used. Unlike the Corvette, the exhaust manifolds were the more restrictive rear outlet 'log' design to clear the Camaro chassis's front cross-member.
The #1 cylinder is at the right rear with cylinders 1, 3, and 5 on the right, while #2 is the left rear with cylinders 2, 4, and 6 on the left. [2]: 24 The firing order is: 1-4-5-2-3-6. The crankcase is cast as two box-section halves. The assembled crankcase provides for four main bearings. There are four cylinder head studs per cylinder, for a ...
In the mid-1960s, Chrysler decided to adapt the 318 cu in (5.2 L) small block V8 into a lightweight, high output engine equally suited for drag strip or street performance use. Its block was bored out to 4.04 in (102.6 mm) but its 3.31 in (84.1 mm) stroke left unchanged, resulting in the 340 cu in (5.6 L) engine introduced for the 1968 model year.
These taller-deck models are commonly called "big-blocks", and are 1 in (2.5 cm) taller and 1.5 in (3.8 cm) wider than their "small-block" counterparts. [1] The Rocket V8 was the subject of many first and lasts in the automotive industry. It was the first mass-produced OHV V8, in 1949.
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 .
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Induction came by means of a cross-ram intake manifold tuned for peak power above 4000 rpm and two Carter AFB-3447SA 4-barrel carburetors. The Max Wedge also included high-flow cast-iron exhaust manifolds that, on the later versions, resembled steel tube headers. The Max Wedge was factory rated at 415 or 425 bhp (309 or 317 kW) (depending on ...
In the Chevy II the engine was branded as the Super-Thrift 153, [1] [2] while in the 1964 Chevy Van, it was called the High Torque 153. [3] Peak power and torque were 90 hp (67 kW) at 4,000 rpm and 152 lb⋅ft (206 N⋅m) at 2,400 rpm. [1] [2] After the 1970 model year, the engine was discontinued in North America.