i doubt those will push u into 400 rwp. u need to add a cam with upgraded valve train, full exhaust, proper intake setup, tune and u should be there. dont forget about suspension and tires. power is nothing if u cant put it to the ground properly. lol thats what the shelby gt500s problem is.
__________________ 2002 white camaro z28 with gfx and new ls1 motor-bone stock except for slp lm 1 and slp lid/bellows- more to come...
I have yet to see a bolt on car make 400whp, despite the countless threads of people saying they want to try
-160 thermo (does nothing IMO, but it's a bolt on)
-electric water pump
that should be a start, but you won't hit 400 rwhp. if you just want to brag about a number to your friends, you can tell them it makes 400 at the crank, but I doubt you'll ever see that at the wheels with only boltons.
I got 343 rwhp on a Dynojet with the lid, ported TB, LS6 intake, QTP longtubes, custom catback, high flow cats, UD pulley, plugs, wires, and a tune on my 99Z M6. If the dyno is accurate and if (note the ifs) I'm losing 15% hp through the drivetrain, that's 403 hp at the crank.