The first Chevrolet Camaro was produced in 1967 to compete with Ford's popular Mustang. In 1968, the Camaro was sold with two 327 cubic inch engines as options. One engine featured a two-barrel carburetor and the other was equipped with a four-barrel carburetor. Some of the specifications of the Camaro's two 327 engines differ slightly from one another.
The 1968 Camaro 327 engine has a 4.001 inch bore and a 3.25 inch stroke. When equipped with the two-barrel carburetor, the engine produces 210 horsepower at 4,600 rpm and 329 ft-lbs of torque at 2,400 rpm. When equipped with the four-barrel carburetor, the 327 produced 275 horsepower at 4,800 rpm and 355 ft-lbs of torque at 3,200 rpm. The two-barrel engine has an 8.75:1 compression ratio, while the four-barrel carbureted engine was equipped with a 10.00:1 compression ratio.
On the Camaro 327, the distributor's rotor rotates in a clockwise direction as viewed from above. The breaker gap is .019 inches and the dwell angle is within 28 and 32 degrees. The breaker arm spring tension is between 19 and 23 pounds. The centrifugal advance is zero degrees at 500 rpm and 14 degrees at the full advanced position of 2,150 rpm if equipped with the two-barrel carburetor. The centrifugal advance is zero degrees at 450 rpm and 17 degrees at the full advance position of 2,050 rpm if equipped with the four-barrel carburetor. The vacuum advance plunger opens at six inches of vacuum.
The valve seat angle on the Camaro 327 is 46 degrees, while the valve face angle is 45 degrees. The valve spring's height as installed is 1.70 inches. The valve spring's pressure is 198 pounds at a height of 1.25 inches. Stem clearance is between .001 and .0027 inches for the intake valves and between .0017 and .0027 inches for the exhaust valves. The stem diameter for both valve types falls between .3410 and .3417 inches.
Piston clearance is within a range of .0005 and .0011 inches. The compression ring's end gap is .013 inches. The oil ring's end gap is .015 inches. Wrist pin diameter is .927 inches.
The diameter of the rod bearing shafts on the Camaro 327 is between 2.099 and 2.100 inches. The required rod bearing clearance is within .0007 and .0028 inches. The shaft diameter of the front main bearing is 2.4502 inches, while the shaft diameter of the rear main bearing is 2.4507 inches. The shaft diameter of the remaining main bearings is 2.4505 inches. The tolerable crankshaft endplay is between .006 and .010 inches.
