CALL911

iTrader: (17)

I know the MS4 has proven to provide more RWHP, however I am curious to the driving behaiviors of both cams when compared to each other. Both are very top end peak monsters, but is one worse than the other? Does one have more midrange/drivability than the other?

Ideally I would love to see two dyno sheets from each with similarly modded cars.

jessedale98

iTrader: (16)

There for a reason

1999ssls1

iTrader: (71)

I would like to see a dyno comparison also

rickyracer25

iTrader: (11)

MS4 full bolt exc. a 90/90 and a EWP

1999ssls1

iTrader: (71)

Is your car an auto?

CALL911

iTrader: (17)

Really? There's a search option? I had no idea it could be that simple

All ready tried the search and came up with results that didn't satisfy my question. Thanks for the wasted response though.

99mongooSS

iTrader: (4)

from the looks of the dyno #'s its an auto. I could be wrong, but with an ls6 manifold, and prc heads my ms4 went 435rwhp and 400rwtq through a 6speed. cant find my sheets, but I went 11.8, spinning quite a bit.

CALL911

iTrader: (17)

To keep this directed properly, again, I alredy know the MS4 will make more RWHP (shouldn't be a ton more though). I am more interested in the driving manners and power curve differences between the two. Or which has a steeper or higher peaking RPM band.

rickyracer25

iTrader: (11)

it's actually a m6, with stock 241's, I think 417 is pretty damn good cam only.
i did dd the cam had no problems with ptv clearance.

CALL911

iTrader: (17)

Getting back to the original question, can anyone help me out with some info on this?

miller456

iTrader: (36)

Well from my understanding the ms4 will pick up power and tq earlier in the powerband than what ms3 will. The supposedly "improved" difference was the low end tq on the ms4 compared to ms3. Driving manners from the phone conversation with texas speed and many other conversations with other members are just fine with proper tune could run just like a mild cam car. However if this was a DD I would go with something smaller just my .02.

CALL911

iTrader: (17)

Finally an answer that follows my question. Thank you!

Anyone else have any info?

miller456

iTrader: (36)

No problem i could sense the irritation but im sure ull have more info to come with some more in depth details.

CALL911

iTrader: (17)

So basically you are saying both will have the same approximate peak RPM for power, just the MS4 will have power that comes on sooner and is more gradual than the MS3?

I don't think either one is ideal for a DD either (for your average Joe), but I am no Joe, and am looking for something wicked in a DD. My Z28 in my sig has a custom cam that is more of a monster than the MS4, and it drives just fine. (cam specs for my Z28 are 244/254 .578/.578 114 LSA)

miller456

iTrader: (36)

I do see that your custom cam compared the the ms4 is basically reversed from each other. Yours has a MUCH higher duration and lower lift than ms4. Even from texas speed the powerband for rpm range and top end are quoted the same. I believe the ms4 may gain even a little more than ms3 in the higher rpm but essentially you have the concept correct again this is from my understanding and as you can see in my sig im going to be going with the ms4 myself.

rickyracer25

iTrader: (11)

Oh ok here is more info

I dd my cam on stock 3.42s had very little problems with surging and bucking most on poor take off lol(I'm blaming the Ram hd). I have a really good friend who has the MS3 it felt to me like in lacked in the middle and low end but just by a bit. He has driven my car and liked it but not enough to make the change... btw he also beat me by a car when we raced on his new 346. So there you go

CALL911

iTrader: (17)

So, rickyracer25, did your friend have similar mods to your car with bolt ons and a MS4, only he had the MS3 and he beat you by a car?

rickyracer25

iTrader: (11)

yes we were almost indenticial, the only difference was he was running a brand new 5.7gto ls1 crate motor from sdpc. in his T/a. I think he dyno'ed at 404 and 385lbs

RareBreed0295

iTrader: (35)

Well call, i ended up going with the Ms3...ill let you know how it goes once i get it installed if you havent made a decision by then.

CALL911

iTrader: (17)

Yeah, I know you did. I am sure you will like it as there are so many people running that combo. It may be the way I go as well, but I have a couple more months before I am going to buy anything so until then I am going to try to get all the info I can.