What is better cast iron or aluminum block?

What is better cast iron or aluminum block?

Aluminum engines manage heat better, weigh less, and are even more durable because plasma cylinder walls or steel inserts are more durable than cast iron ever was.

Do aluminum heads make more power?

Aluminum heads dissipate (get rid of) heat much faster than iron heads. … Aluminum heads will not automatically create more power than iron heads unless they flow more air and are installed on a higher compression ratio engine.

What is stronger cast iron or aluminum?

Although cast iron has a widely held reputation of being stronger than cast aluminum, this is not necessarily the case. Most aluminum alloys have a higher tensile strength. Aluminum can also resist impact better than iron, which is notoriously brittle.

Are Vortec heads better than double hump heads?

The L31 Vortec heads have larger ports than the older Gen I cast steel heads, so they outflow the older heads. The Vortec heads are a little bit lighter than the older heads and have a “kidney” or “heart” shaped combustion chamber that is more efficient than the double hump chamber.

What does CC mean on heads?

Essentially, "CC'ing a cylinder head" is a process which measures the volume of the combustion chambers in the head. Typcially this figure is listed in cubic centimeters, or CCs, hence the term, "CC'ing". When purchasing aftermarket cylinder heads, the combustion chamber volume is usually one of the specs listed.

Do cylinder heads increase horsepower?

Needless to say, the cylinder head is a major component in building horsepower and torque. Because the way the shape and size of the combustion chamber affects so much of an engine's operation, you have to choose the appropriate selection, not just the one with the best peak numbers.

What is the best engine block material?

Based on the above features the most widely used material are cast iron and aluminum alloys to manufacture the cylinder block. Cast iron alloys are used because they contain good mechanical properties, low cost, and availability compared with other metals.

What are 202 heads?

The casting is so thin in that area that the heads are usually always cracked. "202" heads refers to the intake valve size. Back in the late 60's and very early 70's GM produced some performance heads and used large 2.02/1.60 valves.

What are the advantages to an aluminum cylinder block?

5) antiknock properties: thermal conductivity of aluminum is faster, so the good cooling performance, the engine can help to reduce the probability of occurrence of abnormal combustion, the same compression ratio, the lower the aluminum cylinder engine can use the label than the cast iron cylinder gasoline engine.

Why are engine blocks made from cast iron?

Grey cast iron is the first and most material used for manufacturing of engine blocks. Though the aluminum alloy also contain many similarities with low weight, it is still used in the manufacturing of diesel engine blocks because their internal stresses are higher.