OE SBC 4 brl intake mods for a whopping 26 HP increase!
In this, episode 97 of PowerTec 10 DV shows how to make a 'stealth manifold from the factory original SB Chevy cast iron 4 brl intake manifold. These very unusual mods allow the factory original intake to almost match the RPM Performer design of the era. If you want to build a stealth motor for bets on who's the fastest here is where you start. with an external stock appearance the opposition will always under estimate your cars performance. When it's time to bet this is like money in the bank!