To be sure the new 4-barrel engines performed at least as well as the previous 360-hp Tri-Power engine, airflow was improved by reducing piston-to-valve angle from 20 to 14 degrees, and increasing valve diameters from 1. The oil pump, distributor, and fuel pump were driven by an external jackshaft powered by a rubber timing belt nestled within an aluminum housing bolted to the right side of the block. DeMauro Step-11: Inspect Valvetrain As you peer into the lifter valley, you can see the newly installed lifters and pushrods riding on the cam. As you can see, these bearings are heavily worn and must be replaced. Step-4: Torque Connecting Rod Bolts The piston-and-rod assemblies have been installed through the bores.
Therefore, this 389 should be repainted in the correct 1965 Pontiac blue paint color. If you want it to look right, take the time it deserves. Here, the casting number-77 cylinder head stamping is clearly visible on the number-2 front exhaust port. However, there is one glar¬ing problem the engine is the wrong color! The fasteners are in perfect condition and have the correct finishes. The Quad 4 name is derived from the engine's , four-cylinder layout. Photo Courtesy Butler Performance Engine Assembly Step-1: Install Main Bearing Caps The Pontiac V-8 main bearing caps and connecting rods have been installed.
Intake manifold choices were limited to a single 4-barrel or Tri-Power. At the time, the Quad 4 was generally compared to turbocharged four cylinders, , and occasionally. It used shaft drive outside of the engine for water pump and distributor drive and a fiberglass reinforced timing belt. Streamlined exhaust manifolds were used to improve flow, and the block bore diameter was increased. With inexpensive and, more importantly, superior-quality internal parts being manufactured these days, most purists have come around on aftermarket pieces. When it is cold enough, it slips inside the oil pump body. Will they be hot-tanking the engine? Availability was limited to the Firebird Formula and Trans Am.
It was the final chapter in a saga that started in 1955 and concluded after 14,624,886 engines were produced. Please feel free to call or email us, if you have any concerns about your privacy. Though his influence is felt in 1957 model year styling, this 1958 Bonneville represents the direction Pontiac was headed during the late 1950s and into the 1960s. Exact fit for all 1967 - 1969 models that have a throttle cable. The engine wiring is correctly shrink-wrapped and held down with the factory-supplied tabs, which are held down with the valve cover bolts. Growth Spurts Engine displacement grew to 316. The compression ratio was 4.
Mounts behind your driver side inner fender at the firewall. The distributor gear needs to be compatible with the cam, and many distributors require a different gear for a roller camshaft. Okay, You can use it as the research material only. Register a Free 1 month Trial Account. Then, place the carb gasket on the intake manifold. Though there was large push to cast the manifold in aluminum to save weight, cast iron was ultimately used to quell reliability concerns and maximize cold-weather operating characteristics. It was produced from 1955 through 1979 and a modified version continued for another two years.
Why build in a weak link? It was a side-valve design with a timing chain, as was popular at the time. This was the only Quad 4 produced in 1995. The left-hand cylinder bank was offset rearward. Use a piston ring tool to install the three piston rings. In addition to the paint, other areas to pay attention to are fasteners, wiring, and hoses.
For the 1965 through early 1967 model years, the date code and casting number were both located near the distributor hole. Best of all, it can be slipped into a regular 389 or 400 block and provides a huge increase in displacement and torque, while retaining a bone-stock look. Bore was decreased from 92 to 90 mm 3. When parts are Magnafluxed, sonic-tested, and pressure-checked, problems can arise. The 2,880-hp beast has propelled his 2,700-pound 1963 LeMans to a quarter-mile best of 6. An unusual feature was that it had two separate cylinder heads that each covered three cylinders. Searching for information regarding 2000 Pontiac Grand Am 2 4 Engine Diagram? Put the clay between the piston and the valve, rotate the engine, and then measure the depressed clay.
A number of special components were used to accommodate the added cylinder pressure that occurs under boost conditions. This operation should be performed by your machine shop, as it will ensure they are square to the block, which is essential to proper camshaft break-in and longevity. In addition, look at the intake and exhaust manifolds for any cracks, breaks, or other obvious damage. Step-3: Inspect Lifter Valley and Block Pontiac blocks have an inherent weakness in the lifter bore area. What are the differences beyond the codes and casting numbers? Falling between Chevrolet and Oldsmobile on the corporate ladder, Oakland introduced Pontiac in 1926 as a companion model line. What becomes significant to many restorers is whether the original engine is still in the car. Insert the tube into the intermediate tube in the block.