Granatelli LS 112mm throttle bodies are for GM LS and LSX builds that need more airflow than a 103mm or 108mm unit. When cam, displacement or boost pushes your engine past the stock throttle body, going bigger is a common upgrade. Rated for up to 35 psi of boost and made in the USA.
GMTBLS112B: 112mm black billet drive-by-wire throttle body
GMTBLS112SPC: 112mm LS throttle body spacer, for manifolds that need an adapter
It is a drive-by-wire design with the factory-style GM 6-pin connector, so it is intended for LS engines already set up for electronic throttle control. A tune is required after installation. For a milder build, compare the LS 108mm throttle bodies. For a 120mm-inlet manifold, see the LS 120mm throttle body.
