Editing How to identify a Ford V8 (section)
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==Small block Ford ninety-degree engine family, (221/260/289/302/Boss 302/255/351W)== [[Image:Ford 289 A code with HEI and Impco.JPG|frame|center|Ford 289 A code with HEI and Impco natural gas induction]] <br style="clear: both" /> [[Image:Ford gt40 exhaust system.jpg|frame|center|Ford GT 40]] <br style="clear: both" /> *6 cap screws retain rocker covers. *Thermostat housing on intake manifold. *Exhaust bolt holes horizontal. *302 BOSS Engines ('69-'70) have Cleveland (335 Series) style (canted valve) heads and the block can be identified by screw-in freeze plugs. *Timing cover/water pump- put your thumb on the timing cover above the water passage, is it touching the head? It is a 302. Is it touching the block? It is a 351 (the 351W having a higher deck). ===Where made=== 289, and 351W were made in Windsor, this plant opened Jan 1966. 221, 260, 289, and 302s were made at Cleveland Engine Plant #1; the last one was shipped the week before Christmas in 2000. The last four months the plant built ahead for Ford of Australia, who continued to install those engines in new cars for about 2 years. ===4.2 L/255 CI (1980/1982)=== In 1980, an urgent need to meet EPA CAFE standards led to the creation of the 255 cu in (4.2 L) version, essentially a 302 with the cylinder bores downsized to 3.68 in (93.5 mm). Rated power (SAE net) was 115-122 hp (86-91 kW), depending on year and application. Cylinder heads used smaller combustion chambers and smaller valves and the intake ports were ovals whereas the others were rectangular. The only externally visible cue was the use of an open runner intake manifold with a stamped steel lifter valley cover attached to its underside, giving the appearance of previous generation engines, such as the Y-Block and the MEL. It was optional in Fox chassis cars including the Mustang and corporate cousin Mercury Capri, Thunderbird, Fairmont, and standard equipment in the Ford LTD. Poorly received thanks to its dismal performance and mediocre fuel economy, it was dropped after the 1982 model year, and is considered one of the worst modern Ford engines.
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