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With a longer stroke, the compression ratio became excessively high with the 351-2V heads and flat top pistons. Ford engineers reduced the compression ratio by using a piston with a compression height that was too short and this led to an excessive deck clearance of 0.067" to .080" compared to a 351-2V at 0.035" .
The 351W (Windsor) made its debut in 1969; it is often confused with the Ford 351 Cleveland, a different engine of near identical displacement that also began production in 1969. The 351.9 cu in (5.8 L; 5,766 cc) Windsor featured a 1.3 in (32.5 mm) taller deck height than the 289/302, allowing a stroke of 3.5 in (88.9 mm).
Ford 351 Windsor (351W), an engine part of the Ford 90 degree V family Ford 351 Cleveland (351C), an engine part of the Ford 335 family Ford 351 M (351M), an engine part of the Ford 335 family
The 5,409 cc (5.4 L; 330.1 cu in) [4] V8 is a member of the Modular engine family first introduced in the 1997 F-series pick-ups, in place of the 5.8 L 351W. Bore diameter is 3.552 in (90.2 mm) and stroke is 4.165 in (105.8 mm), the increased stroke necessitated a taller 10.079 in (256.0 mm) engine block deck height.
An engine is described as undersquare or long-stroke if its cylinders have a smaller bore (width, diameter) than its stroke (length of piston travel) - giving a ratio value of less than 1:1. At a given engine speed, a longer stroke increases engine friction and increases stress on the crankshaft due to the higher peak piston acceleration.
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Engine displacement is the measure of the cylinder volume swept by all of the pistons of a piston engine, excluding the combustion chambers. [1] It is commonly used as an expression of an engine's size, and by extension as an indicator of the power (through mean effective pressure and rotational speed ) an engine might be capable of producing ...
A fundamental specification for such engines, it can be measured in two different ways. The simpler way is the static compression ratio: in a reciprocating engine, this is the ratio of the volume of the cylinder when the piston is at the bottom of its stroke to that volume when the piston is at the top of its stroke. [1]
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