Now with the fully tacked manifold, place it on the motor and check that everything fits and there are no obstructions. Would buy from again with next project." To gauge the differences in power, we set up a test starting with a stock 5.3L LM7. The exhaust pressure registered in the system began at 6.2 psi, then rose to a maximum of 21.2 psi, meaning the backpressure was almost twice as high as boost pressure (21.2 psi vs. 11.3 psi). The recipe for four-digit power is simple: Start with one wrecking-yard 5.3L, add a cam and valvesprings, then add the required boost. Run with the new race set up, the power output of the turbo 5.3L rose to 768.1 hp at 6,600 rpm and 739.4 lb-ft at 4,900 rpm. The hefty, cast-iron manifolds are considerably stronger than their stainless tubular counterparts, and the cast material and wall-thickness maximize heat transfer to the turbo. Despite receiving a Bachelor of Arts in Advertising, Richard decided to follow his passion for all things automotive. With the rod, weld the collector in place to the header flange so that between the flange and the collector, nothing will be able to move. /* 160 x 600 for right column */

Note also the FAST fuel rails, 89-pound injectors, and ignition coils. LJMS supplied one of its Stage-2 turbo cams for our manifold test. Exhaust back pressure plays a part in the opening of the gate as well. 9:00 am - 5:00pm EST What about all the rest of us regular Joes who run on basically beer money? Treadstone products parallels with quality and reliability, giving you the best products combination in performance turbocharging. The turbo manifolds fed a dedicated 3-inch Y-pipe equipped with a T4 turbo flange and dual wastegates. As a replacement for the original (and ultra-successful) small-block Chevy, the LS had some pretty big shoes to fill. 1,000 horsepower is the new black but fear not.