![]() This is the reason why engines with aluminum heads generally use a slightly higher compression ratio than a similar engine with iron heads. Aluminum heads are also easier to fix if they ever become cracked and need to be welded.Ĭast-iron heads don’t transfer as much heat from combustion to the coolant, making them slightly more efficient. Most aluminum heads are more expensive than iron heads. You can use the social sharing buttons to the left, or copy and paste the website link: Īluminum heads reduce the weight of the engine by about 50 lbs. SHARE THIS ARTICLE: Please feel free to share this post on Facebook Groups or Forums/Blogs you read. For a comprehensive guide on this entire subject you can visit this link: LEARN MORE ABOUT THIS BOOK HERE This Tech Tip is From the Full Book, HOW TO BUILD BIG-INCH MOPAR SMALL-BLOCKS. High-performance iron and aluminum heads are readily available and they both offer great performance in stroker engines. The choice between cast-iron and aluminum heads is based on cost and weight. ![]() But great-flowing heads only work when they are used with the other components designed to work together (i.e., camshaft, intake manifold, and headers). The large-displacement stroker engine demands very good cylinder head airflow to make big power. Cylinder heads are one of the keys to great performance on any stroker engine.
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