How to identify a Ford V8
(→335 series engine family (Cleveland) (302C/351C/351M/400)) |
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*All 302C/351C blocks use the smaller 6 bolt transmission pattern, C4 or "Windsor" type etc. 351C's were available with 4 bolt mains (HO or Boss). 2V heads and 4V heads were used depending on option. Originally 2V meant 2bbl carb. and 4V meant 4bbl carb. However it was soon discovered that the huge 4V ports were not much good for street applications. | *All 302C/351C blocks use the smaller 6 bolt transmission pattern, C4 or "Windsor" type etc. 351C's were available with 4 bolt mains (HO or Boss). 2V heads and 4V heads were used depending on option. Originally 2V meant 2bbl carb. and 4V meant 4bbl carb. However it was soon discovered that the huge 4V ports were not much good for street applications. | ||
*351C and 351M crankshafts are not interchangeable. They have the same stroke but journal diameters are different, 2.75" Vs 3.00". *Connecting rods are not interchangeable between "M" & "C" motors, 6.58" Vs 5.78". | *351C and 351M crankshafts are not interchangeable. They have the same stroke but journal diameters are different, 2.75" Vs 3.00". *Connecting rods are not interchangeable between "M" & "C" motors, 6.58" Vs 5.78". | ||
| − | *Australian Crankshafts are cast and have a raised 302 | + | *Australian Crankshafts are cast and have a raised "302" or "351" on one of the counterweights. US made 4M, 4MA, 4MAB crankshafts were also used in Australian produced 351C's. Ford Australia GT motors are 99% guaranteed to have a 4M type crank in it. These 4M series cranks are also found occasionally in other "regular" Aussie production motors, particularly F series vehicles. Australian 302's have a longer connecting rod @ 6.00" (351C @ 5.78") |
===Heads=== | ===Heads=== | ||
| − | Australian-built Clevelands have 2V type heads, 59cc closed chamber heads on 302C and 74cc open chamber heads on 351C. | + | Australian-built Clevelands have 2V type heads, 59cc (on average) closed chamber heads on 302C and 74cc open chamber heads on 351C. |
===Blocks=== | ===Blocks=== | ||
| − | At some point during Australian production the casting "CF" at the top of the rear of the block, next to the oil pressure sensor outlet was changed to "GF". Also at some point late during production in an attempt to reduce the clevelands tendency to overheat, a "pillow" block was produced to increase water capacity around the cylinders. | + | At some point during Australian production the casting "CF" at the top of the rear of the block, next to the oil pressure sensor outlet was changed to "GF" for "Geelong Ford" plant. Also at some point late during production in an attempt to reduce the clevelands tendency to overheat, a "pillow" block was produced to increase water capacity around the cylinders. |
| − | A "Nascar" block was produced by Ford Australia (exact year unknown) for the US market. Exact | + | A "Nascar" block was produced by Ford Australia (exact year unknown) for the US market. Exact numbers shipped to the USA is unknown. These "Nascar" blocks were to have thicker cylinder walls and "better grade" cast iron, but due to bad core shift were no better than standard blocks. However it is known that most of these blocks were returned to Australia and used in regular production to clear the supply of blocks. |
Australian blocks have a "cast in" thermostat bypass plate, not stamped steel type. | Australian blocks have a "cast in" thermostat bypass plate, not stamped steel type. | ||
===Intake manifolds and carburetors=== | ===Intake manifolds and carburetors=== | ||
| − | Australian-built Clevelands used either a cast iron 2bbl or 4bbl manifold | + | Australian-built Clevelands used either a cast iron 2bbl or 4bbl manifold with 2v size ports. Initially 302C's were only available with a 2bbl carb.(1974-1976) and 351C's had either a 2bbl or 4bbl option. |
Rochester carburetors were used on the 2bbls with an aluminum adapter plates. Carter Thermoquads were used on 4bbl spread bore type manifolds with an aluminum EGR plate. Early production 4bbl manifolds had large secondary inlet ports. Later production 4bbl manifolds had the secondary ports reduced in size in an effort to increase mileage and throttle response particularly on 302's with the 4bbl option. | Rochester carburetors were used on the 2bbls with an aluminum adapter plates. Carter Thermoquads were used on 4bbl spread bore type manifolds with an aluminum EGR plate. Early production 4bbl manifolds had large secondary inlet ports. Later production 4bbl manifolds had the secondary ports reduced in size in an effort to increase mileage and throttle response particularly on 302's with the 4bbl option. | ||
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