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By DiLL - 6 Years Ago
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Hello guys. Been reading about how the 471 heads are best for blown applications. Why is this? Is it just the chamber size? More resistant to detonation than a small chamber? do they flow more than the 113's? Are the deck pads thicker? What's the difference between having a large chamber with a zero deck piston vs. a small chamber with a dished piston, or a piston lower in the cylinder. Asking strictly to be informed as to why everyone uses the 471 heads for blown applications and what advantages/disadvantages there might be in each cyl head for a blown engine. I'm a novice at best, just looking to be educated.
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By Ted - 6 Years Ago
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The 471 heads have larger combustion chambers than the 113 heads. The 113 combustion chambers are nominally sized at 72cc while the 471 heads are nominally sized at 82cc.
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