360 Engine Head Porting - Double Take 360
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The chamber side view of a stock 360 head. The 360 heads carry a smaller 1.88-inch intake valve than the 340 head's 2.02-inch, but the same size 1.60-inch exhaust valve. The ports are remarkably similar. Stock flow was not too bad compared to stock Chevy heads on file, but not even close to the excellent 340 "X" heads. Notice how the straight side roof channel is dammed by the tail of the guide boss, where the boss hooks over into the flowpath (arrow A). View Related Article
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