LQ4 Power

[Fast355]

Those are impressive numbers, especially the change just the intake and associated parts makes as bolt-on pieces.

Last I checked, a Mercruiser 6.2L was something like 325hp so I find it hard to believe it's torque curve could beat the numbers you got for anything below 5000rpm. Might beat the stock LQ4 but I highly doubt it could outrun your modifications, even the before cam mods only. But then what do I know?

That is the Marine NET rating, with a 4bbl car, headers and minimal accessories it put down 338 hp @ 4,400 and 444 tq @ 3,400. With roller rockers, an intake and carb change it put down 379 hp @ 4,600 and 474 tq @ 3,700. At only 2,500 rpm it made as much as 450 ft/lbs of torque. Like I said Gen1 Vortec, especially a 383 has the handle on low-midrange power and the LS is the top-end dyno queen. In my Express van the only time I am able to make use of power beyond 5,000 rpm is in 1st gear or breaking the speed limit and law in 2nd gear beyond 80 mph. Thanks to 4L80E and 3.73s. My normal driving is between 1,000 and 3,500 rpm with brief sprints to 5,500 in 1st gear getting on the highway.