2022年2月3日 · a. Head Flow data for stock Boss 302 head as listed on Boss 302 Forum at 28" H 2 O (water) depression b. Stock Valve Sizing c. Small tube headers with mufflers d. a 750 cfm carb. e. Dual Plane Manifold, High Flow configuration f. 10:1 Compression Ratio. 8) Notes on camshaft specifications used: a. Gross lift was obtained by multiplying lobe ...