Editing Ford engine specifications (section)
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===351M and 400=== ;*Ford part numbers and casting ID codes for the internal parts of M-block (351M/400) engines, including [http://web.archive.org/web/20050729080035/home.earthlink.net/~bubbaf250/parts/parts03.html cam specs] *By 1975 the 351 Modified was issued with Cleveland heads and a two barrel carburetor *Hydraulic lifters *Cast iron intake manifold *Two barrel carburetor The 351 Modified and the 400 which was introduced since 1971, are virtually identical with very few exceptions. Wikipedia's [http://en.wikipedia.org/wiki/Ford_335_engine Ford 335 engine] article indicates these 2 blocks are nearly identical, too. '''Australia''' manufactured the 351 Cleveland and derivative '''"302" Cleveland''' at Ford Australia Engine plant in Geelong, Victoria, Australia from 1975-'81. Although 302 Cleveland engines were being assembled in Australia since 1972, these were made up from imported US Cleveland blocks and Australian made crankshafts, heads, pistons and rods. It is believed that the original Cleveland molds and equipment were shipped to Australia not long after the last motors were manufactured in the USA in late 1974. This included a large supply of 4V cylinder heads and 4MA and 4MAB crankshafts. Both Australian built motors (302C and 351C) used a unique Australian cast crankshaft, not the forged 4M cranks used in US motors. Australian made crankshafts have 351 or 302 cast into the front journal. Australian made high performance 351C motors (290 hp plus) used the imported 4MA or 4MAB cranks. All Australian 302C engines used cast crankshafts and 6" long rods and closed chamber heads (58-60cc chamber volume) made at the Geelong plant. 351 engines used an open chamber head of about 74cc. All heads were of a small port (2V) size, even for a 4 bbl option. 4V heads (US made) were available on Australian GT and GTHO optioned 351C motors up to about 1975 when supplies eventually ran out. 2 bbl and 4 bbl carbs are used on both motors, however after 1976 Carter Thermoquads of about 800cfm rating were used instead of the Autolite carb, this included the 302C. 302C engines supplied with a 4 bbl Carter Thermoquad carb after about 1977 had a uniquely modified spreadbore type manifold which feature a reduced plenum area for increased throttle response. These 4 bbl manifolds were not used on 351C engines. The OEM 2 bbl carb supplied standard on 302C engines was a Stromberg not the Autolite as supplied in the US on 351C. This carb was adapted with an aluminum spacer plate. Australian made 302 and 351 engines were used in all locally manufactured vehicles that had a V8 as an option. This included but not limited to Falcon, Fairlane, LTD, F100-F350. Last Australian made Cleveland motors were installed in 1982 XE Model Fords. Sadly it is common for Australian made Cleveland blocks to have severe core shift. Overboring past about 0.020" may be a problem.
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