99TransAmLS16Spd

iTrader: (8)

Think what you want, but ptv clearance IS an issue with this cam. Do a search and see how close you are pushing it. You HAVE to run a stock size valve if you are on the stock bottom end, that's how close it is!

I have never, let me repeat, NEVER, mechanically overreved the motor. I have hit the rev limiter (6,800 rpm). My bearings are fine....Its amazing somebody would have the nerve to suggest otherwise....but whatever. I bought the cam as a kit, that's with PRC dual springs(.660 max), titanium retainers, pushrods etc. One of our sponsers installed and tuned the cam.

Look, I love the cam, streetability is good and it makes wicked power. TSP has always been super helpful and friendly. But coming from REAL experiance, the PTV clearance is something think about.

021less

iTrader: (28)

lol, boy aren't you a smart one. I have the cam in my car and it PEAKED at 6400, so where are you getting 9000 rpms at??? And yes it would only be a mild cam in an ls7.

MPFD

iTrader: (5)

You must not be very smart if you think that cam peaks at 6400 rpm just cause texas speed says it does. Maybe it would peak at 6400 rpm if you had no other supporting mods, and you were running a stock LS1 intake, with stock manifolds. My crappy comp cam 212/218 doesn't peak till 6100 rpm. Thats whats wrong with the racing world today, to many people with more money then brains. The LS7 also has 1.8 rockers, is the .649 lift of the MS4 with 1.8 rockers? I think not. The LS7 cam specs at .211/.230 .591 lift with 1.8 rockers. So how mild would that cam be in a LS7 again?

http://www.gmperformanceparts.com/En...2397&engCat=ls

black00ssFL

iTrader: (24)

Pretty mild actually, I believe most aftermarket cams for both ls2 based 408's and the LS7 are bigger than the ms4.

And the reason the cam peaks at 6400 is usually due to the intake. Ls6/fast 90's only flow so much on the top end. A sheet metal intake would have that cam making peak power around 7500.

Camaro396

iTrader: (14)

My car is un tuned and I drive it around fine with the MS4.

MPFD

iTrader: (5)

OK 9000 rpm was a bit of a farce, but then tell me how much lift you would have with a MS4's .649 and 1.8 rockers? You have some serious PTV clearence issues.

lemons12

iTrader: (71)

i DD mine.. has a base tune for the moment. about to get my dyno tune... mine runs perfectly fine on the street.. friend has an f13... mine is just as streetable as his....


people who say this cam isnt streetable either...

A) have never DD one..

or

B) had a SHITTY *** tune on it..

period..

black00ssFL

iTrader: (24)

But I don't, I run the stock rockers and selected a cam for the stock rockers that can clear the pistons.....i'm not seeing the point you're trying to make. All I'm saying is that the STOCK cam in an LS7 is fairly large, and that an MS4 (if it even works in the LS7) wouldn't be much of bigger upgrade. Obviously the lift would be too much.....but the problem with it being "too big" in a stock cube ls1 has more to do with the duration and VE than the lift alone. When people are talking about "big" cams....they're talking about duration, LSA, and valve events.....not so much the actual lift. Hell....most of the mid range cams would be too much for the ls7 since it has 1.8 rockers.

MPFD

iTrader: (5)

Nobody said you couldn't daily drive anything, I said thats to big of a cam especially for a 346 cube. You would need at least L92 heads to flow well enough to actually use the power that cam has to offer. If its such a sweet cam and works so well for you why are you only in the 12 sec club? I've seen stock cam ls1 run in the 12's all day.

Camaro396

iTrader: (14)

Your right. 410 rwhp with a MS4, longtubes, LS6 intake, and tune sucks. What are people thinking using stock heads with this cam.

miller456

iTrader: (36)

Also theres to many variables to conclude there, such as what rear gears he has, tires he used to run, if he stuck during launch, maybe needs some suspension upgrages who the hell knows. Theres quite a few cam only ls1's on stock heads with the ms3 and ms4 in the 11's. Plus the the MS cams love the spray so add some cheap HP there and u got a 10 sec car. So not really getting ur point of just cuz HE ran a 12 with the ms4 everyone else must be too.

MPFD

iTrader: (5)

Ok, I going to stop right here, theres no point in argueing with someone who doesn't understand static vs. dynamic compression ratios and how valve overlap effects this. A cam that big in an otherwise stock LS1 would put your compression ratio in the low 9 to 1 range. I 4000 yank and a pair of slicks will get a stock LS1 in the 11's. I'll I'm saying is if you some research outside of LS1 tech you will find that there are better cams with lower duration and lift, that will be more effiecent, and make more useable power.

miller456

iTrader: (36)

I would love to see some proof of a stock a4 with a 4000 stall and slicks run 11s especially with stock gearing. If that was the case almost every a4 on tech would be in the 11s so I'm happy you went to school and applied urself but I would never let u work on my car if this is the case.

MPFD

iTrader: (5)

Who said anything about stock gearing? I certainly didn't. I wouldn't work on your car you couldn't afford me. But I'm glad you admitted that you don't do your own work. It's all starting to prove my more money then brains theory.

miller456

iTrader: (36)

I guess I failed to think when someone says STOCK ls1 that means u can throw in any rear gears, and suspension mods you want and the car is still stock . I would still like to see a bone stock ls1 even with 4.10s run
11s with JUST slicks and a 4k stall. Once again if this were the case thats a very cheap 11 sec car and almost every a4 on this site would be running 11's. I couldnt afford you? please you make is sound like ur the top mechanic of the world. I mean the 7k i put in my car over the winter I guess I couldn't afford you.

The only thing I agree with you on is the fact that there are lower duration, lift cams out there with more usable power.

gsxr1k2

iTrader: (6)

Anything is drivable. It's just obviously up to how much **** your willing to put up with imho.

MPFD

iTrader: (5)

Last I checked the LS1 was actually the "engine" of the car. And I'm not a mechanic, but I do write technical training courses and train all factory "dealer technicians" in North America for a major corporation.

quik406

[QUOTE][I guess I failed to think when someone says STOCK ls1 that means u can throw in any rear gears, and suspension mods you want and the car is still stock . I would still like to see a bone stock ls1 even with 4.10s run
11s with JUST slicks and a 4k stall. Once again if this were the case thats a very cheap 11 sec car and almost every a4 on this site would be running 11's. I couldnt afford you? please you make is sound like ur the top mechanic of the world. I mean the 7k i put in my car over the winter I guess I couldn't afford you.
/QUOTE]

Guess you never seen NHRA stock cars... Stock spec cams stock heads, 10's no 9's

Just because asswipes on ls1tech can't do it with crap bolt ons!

"Daddy can I have the credit card for the biggest cam some sponser makes!!"

By the way old stroker this is kinda fun

lemons12

iTrader: (71)

too big of a cam? then why is it made? 2.5s.... hes not the only one in the 12s.. and like already stated, just because he is doesnt mean we all are....

man that does suck for a cam only app.


its a cam only app, that will be on if not beat most H/C/I cars.. thats saying something isnt it?

98mysticZ

iTrader: (11)

sorry i hate tech support... they make u run around in lookin like a monkey with ur head cut off so i can order the part i already new was bad after cut off time and waste a day of diag.....sorry not bashing and i work for a MAJOR corp