LS6 Intake

DownTownJ · February 24, 2002

Would an LS6 Intake bolt up to a Vortec 5300? Would there be any real benifit to doing this? 10hp or less with stock everything else? How about the "throttle Body" are they compatable?

Has anyone done this?

As well what headers does everyone recomend putting on a 5300?

RedHawk · February 24, 2002

Yes, it will but you would have to remove your EGR sytem..Second it would most likely hurt your power.. your truck intake flows better than an ls1 intake but a little less than a ls6 intake..YOu don`t have thew cam to make the intake work well for you..I also think you would lose low end torque.. To make it work you would need a big cam and a torque converter to keep the rpms in the sweet spot..

CMNTMXR81 · February 25, 2002

LS6 intakes really only shine when they are coupled with a heads and cam motor. If you have a stock valvetrain you haven't increased the engines volumetric efficiency enough to take advantage of the LS6 intake's freer flow.

Import Hater · February 27, 2002

I'm not sure how it works where you live, but in CA that would be emission tampering. A sharp technician would spot the defference in the PCV system between the two manifolds.

Rob

CMNTMXR81 · February 27, 2002

I'm not sure how it works where you live, but in CA that would be emission tampering. A sharp technician would spot the defference in the PCV system between the two manifolds.

Rob

They make an EGR provision for the LS6 intake that you have to buy separately. Lingenfelter sells them. The PCV is a seperate vacuum line that runs out the back of the drivers side valve cover, around the back of the LS1/LS6 intake around the passenger side of the intake and then I believe back into the throttle area.

Here in Illinois we have to take the IM240 roller test and mine with a heads and cammed LS1 passed without any question and I will be installing the LS6 intake I have sitting in my garage once it warms up a little. If anything, it'll passes emissions with even more ease because I will effectively be leaning it out just a hair more.

Import Hater · February 28, 2002

You guys have the dynomometer smog test out there too? Wow. Well, here in CA, if there isn't a CARB label with a number for the mod, even though it would still sniff clean out the pipe, it would be tampering. That's why some of those aftermarket parts say "Not available in CA" because they don't want to spend the money to get the mod certified. But most smog tech out here don't even look, so it'd probably fly no problem.

Rob