![]() ![]() If you’re considering giving a more nostalgic look to your LS, consider the dual four-barrel manifold (PN 300-120 for cathedral port heads) that can mount a pair of small Holley four-barrel carbs to give it a mid-‘60s vibe.įor those true believers whose world revolves strictly around carburetors, Holley has you covered with an immense array of different manifolds basically split into dual and single plane versions. We’ve split this approach into carbureted and EFI categories so let’s get started. With engine builders making so much power from even small displacement LS engines, the demand for an affordable cast aluminum intake (as opposed to a custom-built sheetmetal aluminum intake) was great enough to warrant a wide selection of manifolds. And while the LS7 appears to be the same as the LS3/L92 rectangle port heads, the bolt pattern is different, demanding a unique intake for engines with LS7 heads. So if you have an engine with cathedral port heads, it will require a manifold that is designed specifically for cathedral ports. Not too surprisingly, these bolt patterns and port configurations do not interchange. The third choice is the LS7 which requires its own specific intake manifold bolt pattern.įinally, the change to direct injection created the Gen V version LT engine with yet a fourth intake pattern iteration. So when looking at intakes, you need to know which heads you have in order to make the right choice. Later, as displacement and horsepower demands increased, the Gen IV engines expanded into a larger, rectangle port configuration. The original Gen III engines came with what have come to be called cathedral port heads since the tapered upper portion of the port looks like a steeple. While all production LS engines have always been digitally controlled, many hot rodders still prefer to run a nice traditional big Holley carburetor paired with an MSD ignition conversion so we’ll separate the carbureted versions from their EFI counterparts.Īs most of you are likely aware, there are three LS cylinder head configurations for the port fuel injected Gen III/IV engines. ![]() ![]() Let’s start by differentiating the carbureted manifolds from the EFI versions. We’ll save those for separate attention at a later date but for this story we’ll concentrate on the cast aluminum LS intakes. There are, of course, other intakes available through Holley for these engines such as the affordable Sniper fabricated manifolds. The selection is broad enough that it demands we run through all the cast aluminum versions in order to sort out all the different applications. Holley is right there with a vast collection of intake manifolds. GM’s LS engine has spawned an entire industry full of high performance engine parts designed specifically to add to this engine’s formidable power promise. *** PLAZMAMAN also has a range of Flow matched fuel injectors available in the Fuel System Section of this online shop - these will make a great addition to your intake purchase. *** This item is a heavy shipping item, there is a slight extra cost charged for 15-20+ kg large boxed items by our carriers - we try to keep this to a minimum *** Optional SFI approved burst panel (extra cost).Īvailable in Anodised Silver, Stealth Black or Black Top/Silver runners option.Throttle Body Adaptor to suit OEM DBW 90/102mm or any 102mm LS bolt pattern throttle body.Smooth, tough looking design perfectly suited for show vehicles.Suitable for the LS1 & LS2 'Cathedral Ports' heads.Designed to be used with 8 full length, 14mm, top-feed injectors (8 injector only, 16 injector not available on this intake).Racing design and feedback has been combined, along with Solid Works Computational Fluid Dynamics Software to produce this cutting edge product. Plazmaman has been at the forefront in street and strip inlet manifold design since the early 90s, and this LS manifold is nothing short of spectacular. Introducing Plazmaman's CNC Billet Aluminium Race Spec Inlet manifold to suit the LS1 & LS2 'Cathedral Ports' head engines. ![]() ***PLEASE NOTE - This product has a 3 to 5 working day lead time prior to shipping*** NEWS FLASH - FASTEST 275 RADIAL LS INTAKE IN THE WORLD - Castle Hill Exhaust RX3 Coupe LS Motor - 2500+ PROVEN HORSEPOWER ![]()
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