Right on ill have to do some searching threw the forum, I did take a look at the trex well proven cam but I do plan on street driving the car and the trex just seems a little too much but I have seen quite a few people that do drive the ms4 as a DD

 

Either would be less DD friendly than the ms3. Im still sure it would fit what you want.

 

A buddy of mine runs the old t-rex cam on his Z28, and with the cutout open it sounds like a damn dragster lol

 

It is def not a potatoe cam

 

I wouldn't mill heads ANY with an ms3 or 4. Zero.

Why would you name a cam after a defunct vendor? Did you buy the rights to the name?

LSK/XER on the first versions of the MS3.

 

We have had the cam for quite a while. Years actually. We did get the rights for the trak and trex. Of course now it does not matter since TR has not been around for a while. As far as the name, its a well known cam. Since TSP changed all their cams around, why dont they change their names? Branding is far more recognized esp from their pedigree and wide range of use. Just like everyone says MTI when talking about clear lids.

I did not tell him to mill his heads but some do and some are already. You can set up milled heads for any of them, whether you recess valves or flycutt. Most would not though and i am not saying to.

As far as exact lobes, i was just giving a frame of reference to how aggressive they used to be vs how they are now, but the lsk is known as being aggressive as well though maybe not as well known as the xer.

You seem really overly agitated for some reason and are taking it out on the board.

 

If it's a decent cam known by a certain name, and the former mfr. has gone belly up, no reason not to use the name.

 

Dude, its all in your head. I was just responding to things that stuck out as i browsed the thread. Most here havent been here long enough or know enough to know what an LSK lobe is, so we are sharing accurate information.

We did get the rights for the trak and trex.

I didnt realize this. The problem with branding, specifically old names like these is, half the guys posting here don't know what the heck these older cams are. The flavor of the month cams has changed drastically since then, people just dont stay on one thing too long, its like they get bored with it. TSP has been the one vendor I've seen really stand the test of time, but even now people question their tried and true cams in favor of something they think is "new".

I did not tell him to mill his heads

Never said you did. I've seen people have PTV issues with no milling so not only would I likely not mill, I'd check PTV anyway just due to stacking manufacturing tolerances.

 

Tberg, if the car will be used as a daily driver or longevity of the engine matters I would consider what rockers are available for your project.

TSP's website lists the MS4 as having. .649 lift on the intake lobe. If that is the case, that .649 lift is very hard on a stock rockers and will side load the valves/ valve guides. I would want a good set of T&D, Jesel or Yella-Terra roller rockers for that much lift.

TSP's website lists the MS3 as having .600 lift this a lot more liveable for a stock rockers or trunnion upgraded stock.

 

^^^^Good advice

 

I see good things to think about, but with TSP saying the MS4 has several upgrads over the MS3 with it making more torque and power everywhere makes the MS4 just seem too good to pass up over the MS3

 

The exhaust lobe is the same. The intake lobe has same adv dur, 1* more intake and 3* @.200. It has more overall lift of course.
You get to choose a few diff lsa on the ms3 while ms4 is set at 112 110icl for clearance.

 

tsp offers the MS4 on w.e chose of LSA as well for 15$ more

 

The difference being you wouldn't want to change the ms4. They can make any cam custom of course. Or any custom cam from their ever growing lobe list.

 

I had the original MS4. It broke a valve spring or two and was rough on valve tips but it served its purpose. Motor peaked at 6900 I spun it to 7200 but with a FAST and PRC 215s it went 10.9x at 126 at basically full weight in a stick car at 1500 feet. Unless it was my only car I'd run the original again. It had more of a 2 stroke power band which I liked.

 

Right on, the things make power theres no doubt in that, my build got put off for a minute sense someone broke into my house and stole a good portion of my things along with a laptop but good news for me is that I got anther laptop and can now interact of the forum again, but finances are stable and I'm in the middle of a move so I got a little bit of time to decide 100% on things