(Ive already posted something similar but cant get any interaction that gives any advice on the matter. Gon a try this second post and if nothing will try another site thats actually got some knowledge on the subject)

-2012 Sierra Denali 1500
-6.2l
-L9h
-AWD (borg warner transfer case
​​​-3.42 gear ratio

Current Mods
-speed engineering LT headers, true dual, catless
-volant cold air
-91 octane
-efi live tune

I will be getting stock heads cnc ported/polished from GPI watney and also doing trunions, lifters, pushrods, springs, retainers, dampeners, and basically beefing up the internals to go boost later and because truck just hit 140,000 kms and want to do preemptive maintenance.

Also most likely a upgraded tranny cooler and oil pump and thermostat as well.

Im keeping VVT
I was looking at the GPI LLT2 VVT truck cam and also the TEXAS SPEED Stage 2 VVT truck cam
(maybe a custom grind? )

TSP
220/232 .600"/.600" 113 LS
1400 to 6400rpm
(Suggests dual .660 springs and 2800+ stall )

GPI
21x/23x .55x/.55x 113+8
2250 rpm and up
(Suggest ls6 beehive springs and maybe a stall but not necessary)

If stall is gonna help me or is neccessary obviously i will get a circle D or something.

What would be the best of the 2?
I know it will be splitting hairs at this point but Is the TSP gonna be harder on the valve train than the GPI or does that even matter after i beef everything up.
Ive been through the https://www.onallcylinders.com/2019/03/14/l9h-6-2l-engine-upgrade-guide-expert-advice-l9h-mods-maximize-performance/

Which One do you think would post the best results in torque and hp accross the entire powerband? I want to keep my low end obviously as much as possible as it is a daily drive but will be a bit of recreational track fun as well.and i do alot of highway driving and hit speeds up to 200kms hr quite sometimes on track or stretches of highway.

thanks
Mack

 

After you beef everything up it shouldn't matter. That TSP cam 100% is going to need a stall. I think that GPI cam will probably need one too.

I'm not mega experienced in VVT cams but neither of those are going to be great for low end I do not think.

 

I'm sure someone here has knowledge on the subject, but why would you even ask on this site if you think that nobody "actually got some knowledge on the subject"? That statement sounds pretty confrontational to me.

 

140,000 KMS is only 86,992 Miles for those of us in the states... I didn't even cam my truck till 150,000 miles that's like 241,400 KMS.

If your going to get the heads ported, I would get the TSP cam to get the most out of the porting. Other wise its basically a wash and you will only see the benefits of the higher lift at he higher RPM range between the 2 cams.

 

Also preventative maintenance what is that?

 

To compare cams, you at least need to be able to calculate the .050" valve events. That means knowing intake duration, exhaust duration, lobe separation, and ground in advance. Better if you can also get the duration @ .006" advertised along with it.

The TSP doesn't list the advance, and GPI used x's to hider their true durations. So there's no way to compare each other, or any other camshaft. Not enough info. And company descriptions are useless. There's just too many variables to consider for a given setup to go by those, and one seller might have a different take than the other even if specs happened to be totally identical. And heck if the TSP happened to have +8 advance, and the GPI x's were really 219/232, they would nearly be so, save for the lift.

This is probably why you haven't gotten much of a response.

 

Sorry bud wasnt my intention to hurt your feelings with my statement.

It was my Second post asking relatively the same questions.......Had next to nothing for an in depth response or discussion.......so figured its either a lack of knowledge for my specific questions or the forum just isnt that busy or people just werent that interested. It really wasnt that deep. 🤷‍♂️

 

cheers thank you🙏 yeah im starting to realize theres a bit more to it. Been spending alot of time looking at different cams (mast, tsp, gpi, comp etc....) since then and have been eyeballing these comp cams a little bit. Been researching diff springs and lift etc... and what i really want to go with.
Was thinking going with pac 1218s with tool steel retainers and then a semi mild VVT cam for now and see how i like all the bolt ons then a couple years down the road change see if i want to change it up with a blower and a diff cam.

What do u think of the comp cam below for a NA application? This seems a tad milder than the TSP

-ported heads
Lt headers
Dual exaust
(Maybe ported TB?)

 

the trucks got 140,000kms on it. Havent had any issues other than what sounds like a lifter tick getting a bit loud with the engine. Figure now would be a good time to beef everything up with new parts and seals before something breaks and costs me more later.

-Just had to replace front diff, pinion seals, ball joints bushings tie rods etc.... Shes not the spring chicken she once was and ive drove drive her pretty hard for the last 12 years.
Alberta winters and rig roads arent too forgiving on our vehicles either

 

I never considered that. Ty