Page 215 of 2008 Performance Parts by Ford Racing Performance Parts

small block v-8 engines 289/302/351w water passage 351c/351m/400 351c cleveland the 351c entered the scene in 1970 and was produced until 1974 it has canted valves with multi-groove keepers hydraulic cam pedestal-mounted rocker arms with sled fulcrum seats that are retained with cap bolts heads for 2v induction have open chambers with rounded ports while 4v heads have quench combustion chambers with larger rounded intake and exhaust ports a 351c cobra jet appeared in 1971 with 4-bolt main caps which was carried over in 1972 as the 351c-4v with open chamber heads windsor vs cleveland water passages 289/302/351w engines use a front cover and water exits the intake manifold face of the cylinder head through the intake manifold to radiator 351c/351m/400 engines do not use a front cover the block is extended and covered with a flat stamping water exits the combustion face of the head and into the block and then to the radiator windsor and cleveland heads physically interchange but some modification is required to accommodate the differences in water passages see page 219 and above for details ford racing 302/351 ford racing engine blocks ford racing has designed several ford racing blocks for maximum performance competition they re designed for small block engine builders who want to use existing 302/351c or 351w components 302/351 ford racing engines constructed with ford racing block and ford racing cylinder heads are not available as complete assemblies when ordering parts consider these key points · 302 ford racing block m-6010-r302 can be used with all 289/302/302 boss applications · 351 ford racing blocks m-6010-e351 thru m-6010-w351 can be used with all production 351w applications except those relating to crankshaft main bearing diameter the 351 ford racing block is machined for the smaller 351c type bearings ford racing crankshafts feature the smaller 351c main journals that are compatible with these blocks the block is available in two deck heights 9.500 and 9.200 so either windsor or cleveland components can be used topside requires 289/302/351w type camshaft · if 302/351 ford racing heads are used on 302/351 ford racing blocks the ford racing type intake manifolds are required 351c boss the 351c boss also appeared in 1971 it had 4-bolt main caps and the 4v type quench chamber head with pedestals machined to accept a 302 boss type valve train and mechanical cam the con rod featured a 180,000 psi .375 bolt in 1972 open chamber heads were used with a flat-top piston and the name changed to 351c ho ford racing 302/351 ford racing water passages several different water passage hole patterns have been used on 302 ford racing and 351 ford racing cylinder blocks and heads since their introduction engine assemblers should lay the head gasket on the block and the cylinder head with front of the gasket toward the front of the engine to make sure there is a path for coolant flow from the block into the head in some cases holes may have to be drilled in the block or head or punched in the gasket current ford racing cylinder head gaskets are listed on page 120 351m modified and 400 the 351m and 400 are similar in design to the 351c but there are subtle differences both the 351m and 400 blocks are 1.100 taller and have larger main journal diameters engine mounts are unique bell housing pattern is the 429/460 design not legal for sale or use on pollution-controlled motor vehicles direct replacement part see pages 2-8 for important safety emissions and warranty information www.fordracingparts.com 213

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