Run with the TBSS intake, the modified 5.3L produced peak numbers of 473 hp and 419 lb-ft of torque. The TBSS intake improved power production over the early truck manifold from 4,500 rpm to 7,000 ...

If necessary, dealers will also inspect the intake manifold. The recall is expected to begin on December 31, 2020. Jeep Grand Cherokee EcoDiesel owners can check if their vehicle is involved in ...

Alas, when we last left the little 5.3L engine, it still had the OE truck intake and Summit 80mm throttle body. ... Dyno Testing FAST's New LSX Intake Manifold - Suck It In.