LS engines are finding their way into all sorts of different places – street rods, sand rails, even Fieros [1] and Porsche 996’s [2]. Though the creativity of swappers is endless, the less fabrication required, the better. Spectre [3] has just introduced a couple new part numbers that will be real problem-solvers for LS swaps where space in front of the engine for intake plumbing is at a premium.
[4]
Their new ProFab MAF sensor kits replace the boot-style MAF common to the LS series with a blade-type sensor, saving 2-3 inches of room ahead of the throttle body. But the space-saving factor isn’t the only benefit; Spectre says that when placed in a 4-inch diameter tube, these kits will flow up to 25% more air than stock boot-style MAFS. Spectre also claims that the blade style design is more robust and less prone to flow sensitivities than the boot type. The kits are available in 3- and 5-wire flavors, and include a rectangular bung that can be welded in just about anywhere on the intake tube ahead of the throttle body.
[5]
Though they’re not (yet) part of the regular catalog, Spectre also had a couple of other interesting pieces of LS hardware on display including the fabricated intake manifold and “over the top” intake tube shown here.
[6]