Part Type:Intake Manifolds. Intake Section Included: Complete. Engine Block Style: Stock/OEM standard deck. Intake Style: Dual plane. Intake Manifold Height: Front (A) 4.875 in. Rear (B) 5.750 in. A + B divided by 2 = 5.3125 in. As shown in the picture. RPC square bore, dual plane intake manifolds add performance, improved throttle response and increased torque to your V8. Made out of high quality cast aluminum and available in satin, polished and black finishes. The square bore flange accepts most square bore non-EGR 4-bbl carburetors. Basic Operating RPM Range. The orders of Friday would be shiped in the next Monday. Our office hours are 8:00 a. M to 5:00 p. M (GMT +8) of Monday to Friday. And our Office is closed on weekends and public holidays. We apologize for the late reply during the holidays. Narrow Band Exhaust Clamps. 302-2 Engine Oil Pan Kit Low Profile for LS1 LS2 LS3 4.8L 5.3L 5.7L 6.0L 6.2L. LS Swap Tube Headers 1-3/4 For Chevy Pontiac Buick LS1 LS2 LS3 LS6 LS7 Pair. Stainless Steel Headers Manifold w/ Gaskets for Chevy GMC 07-14 4.8L 5.3L 6.0L. STAINLESS STEEL LAKE STYLE HEADERS For SBC 265-400 V-8 CHEVY, HOT ROD, STREET, RAT. SBC Chevy Dual Plane Satin Aluminum Intake Manifold For Vortec 350 Heads Black. SBC Chevy Dual Plane SatinAluminum Intake Manifold For Vortec 350 Heads Polished.