part 2
In some cases, a build might actually benefit from an engine block with a shorter deck height. McInnis explains why you might want to look at all of your options before a block is selected.
“Where displacement is limited by rules, for example, a shorter deck allows the use of shorter connecting rods, reducing the weight of the rotating assembly. The shorter deck also results in reduced weight of the block. An example of this would be using a 9.200-inch deck, a Cleveland deck height for the Ford small-block rather than the standard 9.500-inch Windsor deck height.”
McInnis goes on to add some additional detail to this short deck block application.
“An example where this deck height would help is World’s 9.500-inch deck Merlin IV big-block. There was never a factory OE block made in this configuration. For small big-block engines of 500 cubic-inches or less, it can offer some unique advantages. A big bore, short stroke engine with a shorter rod will accelerate faster and make more power at high RPM. In truck pulling classes where displacement is limited to 470-485 cubic-inches, this combination works very well,” McInnis says.
So, what should you look for when it comes time to select a block and deck height for your build? It comes down to what kind of racing you will be doing and if there will be a power adder in play. Each of these factors will change how you need to configure your engine and its deck height to produce reliable horsepower.
“Cubic-inch limits in specific racing classes can mean certain deck heights may offer an advantage both in weight and in the rotating assembly configuration. If power adders are being employed, a small increase in deck height can be a big advantage. Also, be aware of things like the availability of intake manifolds. For some deck heights, there are few choices, and for some, a custom intake will be the only option,” McInnis explains.
If you want to learn more about deck heights and what World Products has to offer make sure you check out their website
right here.
Article Sources
World Products
(877) 630-6651