The folks at Lingenfelter Performance Engineering recently uploaded a video to their Youtube channel that features an experimental camshaft dyno test with a modified LS7 engine. In the video, the engine whirls to life on the dyno and produces some ridiculously high numbers. In addition, a few modifications have been made to accomplish the 1,100+ horsepower rating.
Lingenfelter LS 427 V8 Screams On The Dyno
The LS 427 Specs Lingenfelter has listed in the description of the video states that this engine features the LS7 kit they’ve been working on. This includes a Magnuson Magnum Pl 2650, 8″ Crank Damper, 70mm Pulley, 20K RPM Supercharger speed, 120mm Nick Williams Throttlebody, and 22 degrees of timing. Altogether, this has created an overwhelmingly high amount of power for the LS 427 V8 engine, which makes a total of 1,142.7 horsepower and 990.5 lb-ft. of torque which is quite impressive.
The supercharger that assists with getting the numbers to where they are was first announced by Magnuson during SEMA 360 back in 2020, the virtual edition of the annual trade show that was necessitated due to the Covid-19 pandemic. However, the blower kits didn’t reach the market until mid-2021. The Magnum Pl blower uses unrestricted discharge port openings to feed a large plenum, allowing max flow across the intercooler; the compressed charge air is less useful if it’s hot from compression. The inlet ports use Magnuson’s patented dynamic flow technology, and all ports have been CNC machined in order to achieve the best consistency.
Additionally, the kit uses a vacuum bypass system with instantaneous boost response, enabling the supercharger to unlock at engine idle and part-throttle for improved fuel economy. Probably the last thing on anyone’s mind if they had this under the hood of their car. Another interesting trick that the kit has to offer is the ability to recirculate the intercooler bypass air through the supercharger, which enables a rapid cool-down.