LQ4 cam upgrades with 243 heads in Tahoe?

[Goldhawg]

I am thinking of an lq4 and would add 243 heads, but want a broad torque band that can be all done at 5500. Does a cam upgrade, like an ls6 cam, make sense? Or is the stock one good given my goals?

[Show&Go]

Any reason you want to be done at 5500? LS motors tend to react well to higher rpm bands.
If you wanted a very mild cam on a 6.0 something like a 224 from tsp would be ideal and shift around 6k. That cam by most standards would be considered small. But I've been out of the game a long time.

[Goldhawg]

It's not that I have to be done by 5500, but that the target vehicle is 6700lb 2 door 4WD tahoe--this is not a bracket racer. So I want a very broad torque curve; 99.9% of the driving time would be below 5500 in any case. So although I know that in general higher HP cams achieve that by moving "up the ladder" in RPM, I didn't know if there was a better choice (especially since I'd be moving up to 243s and higher compression) that might actually do better in low and mid-range too. I'm not interested in getting a custom cam (not in my budget), but if I could find a used cam that people want to upgrade from (such as an LS6), would that be a good move?

[blacstar]

add a turbo(5psi). nothing else

[Show&Go]

Run a smaller trucker style cam. Shift around 6k. Vinci makes one, there is a comp cam that a lot of truck guys here use. I'm sure someone will chime in with it. Pull from around just off idle to around 6k or so.

[kerrige]

No a LS6 cam swap would not make sense and here is why...
1) a LS6 cam will add best case scenario about 30-40hp to a Lq4 with 243s.
2) you will spend about the same as a used aftermarket cam anyways.
3) your pulling the heads already why not do it right the first time.

I am not advocating a monster all out cam at all. Something in the 230 duration range while a ton of fun and super mean is not what you are looking for. In your case you should be looking towards some thing like a 212/218, HT1 cam(214/218), trickflow 216/220 or similar. That LQ4 with those heads will eat a whole ton of cam, before it even begins to effect driveability.

[Show&Go]

^^^ there is the input sure someone would throw in. That size range would be dead on.

[George C]

i wouldnt use the LS6 cam for that build and how is a tahoe 6700lbs being 2wd?

i would look for a cam around 212 around 580 lift with a 114...this would give you a good bit of torque and dynamic compression would be pretty decent aiding in cylinder fill so torque would be up and be done around 5500

[Goldhawg]

i wouldnt use the LS6 cam for that build and how is a tahoe 6700lbs being 2wd?

Now I see how you get over 6000 posts! You read them fast! I said it was a 4WD, but a 2 door.

But good advice all. I was hoping that if any cam was a good replacement, it might be a common one that people would replace for "more" cam so I might be a good used one.

[George C]

Now I see how you get over 6000 posts! You read them fast! I said it was a 4WD, but a 2 door.

But good advice all. I was hoping that if any cam was a good replacement, it might be a common one that people would replace for "more" cam so I might be a good used one.

6000 post isnt much especially since i been around for almost 7 yrs

still curious how your 6700lbs