C5 Forever

I know a bunch of people ordered them from Thunder Racing after he posted results. I'm just wondering what their consensus was after install.

DuronClocker

iTrader: (25)

I love it in my car, even untuned. I have to tap the gas for the first few seconds of running when the motor is cool to keep it from dying. Once its hot and the idle straightens itself out, it idles smooth at 850-900 and sounds great. I did a bunch of stuff at once (heads, cam, LTs, UD pulley) so it obviously made a big difference, but the cam is very streetable. Power down low and it pulls easily to 6000RPM and wants to keep on going. Haven't taken it over that though yet because I'm scared to go much higher untuned and I'm pretty sure the factory rev limiter is at 6200RPMs anyways.

Was scheduled to get dynoed Monday at Speed Inc, but they asked if I could move to Friday because they had to get something else done, so I agreed. Then my clutch slave cylinder went out on me Wednesday So I'm having T56rebuilds.com rebuild my trans for me while its out.

I ended up getting a basic tune on Friday before I pulled the trans and will be going back for my dyno tune as soon as my car is driveable again. I believe they raised my idle to around 1000RPM in the basic tune to keep it from dying until it is dyno-tuned.

fast98

iTrader: (16)

i have it to, mine is tuned by me, but i havent been to the dyno or track with it. i moved up from a mti stealth 2 (224/220 .581 116lsa) it has way more torque down low and pulls way harder up top. i shift at 6700 rpm, its the only change i made at the time and i love it. it idles smooth at 900 rpm with very little lope. its a great cam

C5 Forever

Sounds good. I was just comparing the chart to that of the MS4 and it outperforms it quite well, for not being as big.

Hennytime

iTrader: (33)

i like the fact the cam peaks at 6200rpm but pulls to 7k, i might get something similar just with the xer lobes something like a 224/228 581./.588 110lsa

Street Lethal

I've been considering a grind similar with XE-R lobes as well, and I remember Predator asking a question relating to this very thing. Patrick responded by saying;

"An XE-R cam of the same duration at .050" would be down on power about 10 rwhp and would peak about 100 rpm lower in rpm. The reason why is more curtain area with the LSK lobes and more duration at .200". A 224/228 cam with XE-R lobes has 146/149 duration at .200" (compared to 150/153). The XE-R has .581/.588 lift as opposed to .637/.639. For an XE-R to make comparable power, it would need to be around 230/234 to make the same power"....

Jpr5690

iTrader: (13)

outperforms it ??? can you post these charts.. i just dont think a 224 cam outperforms the ms4

C5 Forever

C5 Forever

Granted, these aren't cam only cars. But you see what I'm saying.

DavidNJ

The graph shows the cam wasn't the limiting factor at higher engine speeds. And the earlier IVC dramatically boosted power at lower engine speeds.

Jpr5690

iTrader: (13)

how do any of these dynos prove the patrick g's cam is more powerful than the ms4???

Jpr5690

iTrader: (13)

i hope your not inferring the ms4 is the blue line in first graph..

Jpr5690

iTrader: (13)

actually from what i see both of those graphs say nothing about the ms4 cam ..... am i missing something?

brad8266

iTrader: (23)

This cam owns the magic stick, it makes way more all through the RPM range rather than just peak power.

Jpr5690

iTrader: (13)

again where is the proof nothing in this thred proves this claim

brad8266

iTrader: (23)

heres proof from patrick g's dyno pulls. This cam makes 350lbs-ft @ 3000, thats some serious down low power. That setup pulls hard all through the powerband rather than making big power just up top but not making much down low. Its not all about peak numbers.
http://guerragroup.com/2000TA_dyno224.jpg

Jpr5690

iTrader: (13)

no im not saying it is but you also must realise patrick g is able to build well matched setups and knows how to set everything up just right


if i remember correctly he was running a set of milled afr heads and has a whole spew of other high end goodies in his car.. thats no to say its not an impressive dyno but i wouldent attribute it all to that cam.. also didnt the ms4 just come out like a week or 2 ago? so how can there be so many dynos (which havent been posted) of the ms4 cam against patrick g's cam when im sure just the first few people are getting them in

brad8266

iTrader: (23)

probably because the MS4 will be a larger duration than the MS3, which will once again take away low end power and gain a lot up top. Once again it will probably be just more peak HP.

Yeah patricks setup has nice matched parts, but thats how it is supposed to be done. And I thnik his cam even on a cheaper overall setup would still have the same powerband characteristics but would just yield less power.

JZ'sTA

iTrader: (23)

Acturally the MS4 is the same duration but with LSk lobes on the intake.
Similar to what Pat is running.
The MS4 will acturally distroy Pat G's cam in a all out setup.
It will make more peak power and probally be very close in power from 4000RPM's up which is where all racing is done.
Torque wise the 224/228 should hold its own.
(My reply is based on similar DCR which means the MS4 would like about 12:1 SCR off the top of my head)

Now as far as driveability, thats a different subject.
Also the MS3 cam will more then likely make more peak power and more power above 5000 rpm's against the 224/228 cam.
The cam in the blus is a 234/238 598/605 on a 112 I believe.
Dont quote me on the LSA though.

brad8266

iTrader: (23)

Right, I went to TSP's site and finally checked the specs on the ms4. I would much rather have a cam with down low power though, even if the ms4 makes more peak power.