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Ford Racing Catalogue Web

ENGINE HISTORY SMALL BLOCK V8 289/302/351W/351C/351M/400 SIX WAYS TO BUILD A WINNER Ford manufactured millions of small block V8s, and Ford Racing parts are available for many of them. You have a choice of six engines to modify (eight if you count two high-performance BOSS versions). So, you’ve got great flexibility working for you, whether you begin with a complete engine assembly or a bare block. All have four-inch bores, but there are differences that affect parts interchange, for ex am ple, the water passages described on page 86. Here’s a brief description of Ford small blocks. 289/302 The 289 was produced from 1963 through 1968, and the 302 from 1968 to 2001. They’re very similar, except for stroke. Of special interest is the 289 4V high-performance engine (1963-1967) with mechanical camshaft, threaded rocker arm stud (adjustable) and a recessed spring seat. Most other 289 Hi-Per 289/302 (1968-1976) en gines use a press-in stud. 1978 and later 302 engines use a modified pedestal as shown on page 82. Many 289/302 parts fit earlier 221/260 engines (which had smaller bores). They also had less metal around the bores, so you can’t overbore to come up with a 289. The 1985 model Mustang GT introduced a new high-output 302 with roller tappet camshaft. Electronic fuel injection was added in 1986. 302 BOSS This is certainly one of Ford’s all-time super engines. The 302 BOSS (1969-1970) proved to be very com- pet i tive in 5-liter TransAm racing. It featured big breathing heads with canted valves, mechanical cam, stamped rocker arms with a threaded adjustable stud, push rod guide plates, forged crankshaft, 4-bolt main caps (#2, #3 and #4 journals), beefy con rod with spot-face for .375" bolt and forged pistons. 302 BOSS 351W (WINDSOR) The Windsor Engine Plant builds this engine; hence the name. Normally, this isn’t important. But another engine, the 351C (for Cleveland Engine Plant), has the same displacement. That’s about all they have in com mon. So, it’s always important to differentiate between the two. The 351W is a beefier block than the 289/302, but has the same bore spacing (4.38") and bore diameter (4.00"), so heads retrofit. A higher deck height requires a unique intake manifold. Main journals (3.00") are larger than the 289/302 (2.25"). Camshafts in ter change, but the 351W has a different firing order: 1-3-7-2-6-5-4-8 vs. 1-5-4-2-6-3-7-8 for the 289/302, except 1982 and later 302 HO which use the 351W firing order. The 351W has been used from 1969 to 1998. In 1994 the cylinder block was modified to accept a hydraulic roller camshaft for the F-150 truck. The 1995 Cobra “R” Mustang used a 351W engine that was very similar to the Lightning engine. The Modular engines eventually replaced the 351W. 351W For important information about the proper usage of performance parts, please see page 14. See pages 286-292 for important safety, emissions and warranty information. www.fordracingparts.com 85


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