Hot Rod - - Ls3 Intake Shootout! -

Like the sin­gle throt­tle-body ver­sion, the du­alquad Hi-Ram ex­celled at high-rpm power pro­duc­tion. In fact, it took top hon­ors in this test by pro­duc­ing 619.9 hp at 6,900 rpm. Ob­vi­ously, the com­bi­na­tion re­quired more air­flow than the sin­gle throt­tle-body could muster, so the dual 4150 throt­tle-bod­ies al­lowed the sys­tem to breathe. There was also a slight change in the plenum vol­ume be­tween the two tops for the Hi-Ram. Equipped with the dual 4150 throt­tle-bod­ies, the Hi-Ram pro­duced 619 hp and 515 lb-ft of torque.

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