GM eventually replaced the cathedral-port heads with high-flow, rectangular-port heads when they introduced the LS3, L92 ... Trailblazer SS (TBSS) manifold, the stock LS3 intake, has proven ...

Let us begin by saying this was the most impressive stock replacement-type intake manifold we ever tested ... the gains we realized using a boosted TBSS. Still, half the gains are impressive ...

The L92's specially designed intake ports require use of the L76 manifold, which comes complete with 39 lbs/hr injectors, fuel rails, and a 90mm throttle body. Daniecki Sr. should easily be able ...

Several of the best looking and top performing intake manifolds for LS engines are too ... basic LS engine intake port designs: cathedral, L92, and LS7. The bolt-on, bell-mouth velocity stacks ...