This made the 302 one of the more powerful engines in the F-Series lineup, behind only the 351 High Output and the 460 big block. Both were introduced in 1968 and lasted until 1996. The 351W employs a heavier wall thickness around cylinder bores and main webs. Camshafts will interchange but the firing order will require that the distributor cap be wired based on the firing order that the camshaft was ground with. However, the 351C block is a completely different casting designed to take on larger cylinder heads with poly-angle valves, huge wedge- and bowl-shaped chambers, and smaller 14-mm spark plugs. Bore size remained the same at 4. It was a world beater and symbolic of the end of the classic muscle car era.
Carroll Shelby began his two-seat Cobra production with the 260 topped with a Cobra high-rise manifold and Holley carburetion. Although this has been a point of speculation for years, I have to admit it looks suspicious from any angle. Head and Block Construction As this is an older engine, the block and head are both of cast iron construction, as one would expect. The 289 block is a thicker casting, designed for those larger 4. Bellhousing Transmission to Block Engine Oil 25 ft-lbs. All it took was cooling passage modifications to these Cleveland castings because the 351C has a dry-intake manifold and the Boss 302 has a wet one , which was easy in production. Beginning in 1982, the 302 5.
The 4-barrel head has a wedge chamber, where the 2-barrel head has a larger open chamber to reduce compression. In 1975, Ford dropped the 351C low-deck block and destroked the 400 to achieve the 351M. The Boss 302 engine happened when Ford decided to get out of racing. For 1969 it was the only 351W4V engine produced with 10. The 351C High Output was available for a short time in 1972 before Ford ended production mid-year. The small-block Ford V-8 was a quantum leap in lightweight cast-iron engine technology at the time.
It has 255-specific cylinder heads with smaller combustion chambers and valves with round ports and absolutely no performance potential whatsoever. Most were fitted with the castiron Ford Top Loader 4-speed transmission. Aside from this important change, the 289 remained essentially the same, with the base 289-2V engine keeping 52. Clutch Pressure Plate Thread Locker 35 ft-lbs. The Boss 302 engine was introduced just as Ford decided to get out of racing.
Beginning in 1966, all engines were painted Ford Corporate Blue and remained that way until the early 1980s, when color changed to gray, then, ultimately bare iron and aluminum. Chamber size depended upon the casting. Problem was, racers needed to push it to nearly 9,000 rpm to make checkered-flag power, scattering these engines all over racetracks from coast to coast. Despite a drastic blow to the economy, enthusiasts are still racing the 5. As time progressed, the 351 Cleveland made less horsepower until its demise in 1974. The 289 High Performance V-8 remained virtually unchanged aside from the six-bolt bellhousing block and a higher compression ratio.
The significant interchangeable parts with other small blocks from the Windsor family are the heads. Both the 351M and 400 blocks are 1. The 289-4V engine went from sharing dished pistons and the same compression ratio to 10. It is fitted with the 2. This is a 1966 289 produced prior to May 1966 with traditional small-block Ford valvecovers. The 302 has evolved considerably since its introduction in 1968.
All had flat-tappet high-performance mechanical camshafts. A word of caution - Ford used whatever stock of parts was available, no matter what size engine family. During the following years, the 221 and 260 proved to be fiercely reliable engines that were both peppy and economical to operate. Additionally, factory service parts may be whatever is on the shelf, also not necessarily the current year. Important upgrades in the 289 occurred for the 1965 model year beginning in August 1964.
More iron in the main webs permitted elimination of block skirts found in earlier Ford V-8 designs, which reduced engine weight. In 1988, the only 5. So, itâs always important to differentiate between the two. Some 1967—1968 289 engines got 302 blocks. Oil Pump Engine Oil 25 ft-lbs. The 221 and 260 were introduced in the 1962 Ford Fairlane and Mercury Meteor.