m6 ms3,ms4, T-rex guys inside please
11-27-2006, 05:15 PM
#1
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m6 ms3,ms4, T-rex guys inside please im trying to decide which cam i wanna go with but im being told that to run a cam this size in a m6 car that you have to rev to the moon to get the car to even move 
. so i guess im just curious as to how street friendly these cams are or if i should go with somthing smaller since i have to be able to drive this car everyday. also, i know that flycutting is reccommended with the ms4, but what about the ms3 and t-rex cams...I don't wanna have to flycut the pistons but i also dont wanna hve to worry about overreving the thing and floating the valves. any info or openions would be helpful
thanks
Eric
. so i guess im just curious as to how street friendly these cams are or if i should go with somthing smaller since i have to be able to drive this car everyday. also, i know that flycutting is reccommended with the ms4, but what about the ms3 and t-rex cams...I don't wanna have to flycut the pistons but i also dont wanna hve to worry about overreving the thing and floating the valves. any info or openions would be helpful thanks
Eric
Last edited by 408 z28; 11-27-2006 at 05:20 PM.
11-27-2006, 06:02 PM
#2
First off no fly cutting is needed for the Ms4, second I rev to about 1200-1500 rpm to get moving. this cam is very streetable!!! I shift at about 6500 rpm ans no valve float
11-27-2006, 06:45 PM
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Since your car is 408ci you shouldn't need a huge cam to make good power. While its cool to say you have T-whatever or an MS-this, go ahead and get a custom grind matched to your combo. I think you will be much happier in the long run. Most of the people I see with those cams are into dyno numbers. I dont know about you but I am into timeslips. Most competent performance shops will guide you towards cams with excellent power and max reliability. Carolina Auto Masters is an excellent shop, look them up. Good luck.
11-27-2006, 07:14 PM
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actually this is for my bolt on ls1 car...all i want to do is have good street manners with above average power with that nasty litte lobe. and yes im also more into track times over dyno numbers...this will be my first cam swap into a fuel injected car so im a little jittery about it thats why im just gonna go with a proven cam over a custom grind. 
11-27-2006, 08:17 PM
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i have to say that my trex has done its job for me. i have gears 4.56 to get me moving but i start about 1500 and shift at 7000 with no valve issues but i run partiot dual springs. my car has been into the elevens with a weigth of 3520 with me so that is not bad. the trex sounds awsome and drives well in my opinion.
11-27-2006, 09:08 PM
#6
Originally Posted by KONG
Since your car is 408ci you shouldn't need a huge cam to make good power. While its cool to say you have T-whatever or an MS-this, go ahead and get a custom grind matched to your combo. I think you will be much happier in the long run. Most of the people I see with those cams are into dyno numbers. I dont know about you but I am into timeslips. Most competent performance shops will guide you towards cams with excellent power and max reliability. Carolina Auto Masters is an excellent shop, look them up. Good luck.
Way to read and all, what cam do you have? I'm interested because being concerned with track times and all you'll know that the Ms3 was the fastest cam only car and then the t-rex steped-in and took that? By the way I could give a **** about dyno #.
Thanks and regards from the Douche Bag Control Team
11-27-2006, 09:28 PM
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I daily drive an MS4 in a 347 ci, and for the size of the cam the street manners are unbelievable. I would reccomend a 4.10 gear for sure. If you get a good tune it shouldn't be a problem at all. I still pull 285 miles to a tank of gas. Not easy on it either.
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11-27-2006, 09:31 PM
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I think you need to throttle back bro. In case you didnt get it, I believe he wants drive the car everyday. None of my comments were directed at you, hell I wasnt even talking to you. My cam is custom grind based off the Futral F13. Its an awesome cam, makes awesome power, and has good street manners. I really could care less if you have a T-rex or a MS3 in your car. I was just giving my .02 to 408 z28. Oh yeah, with that cam, an ls6, stock 243 castings, full bolt-ons, it made 441 rwhp and 403 tq. Proving you dont need a huge cam to make good power. 
11-27-2006, 09:39 PM
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I dont daily drive my car but it gets taken out regularly. I run the ms4 with a 4400 stall and 3.73's, You don't have to flycut, unless you run a set of heads with bigger valves. Theres a article in the new GM High Tech magazine that has the ms4 with PRC stage 1 heads and it makes real good power.
11-27-2006, 09:42 PM
#10
sweet I would be pissed if I did a head & cam swap and only be in the 12's. By the way Why are you throwing numbers around if you care about track numbers. Plus I drive mine everyday, everywhere... so 
by the way it's an Ms4 (way to read again, deedee)
by the way it's an Ms4 (way to read again, deedee)
11-28-2006, 05:59 AM
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Those times were before head&cam. Those were just bolt-ons. Haven't gone to the track yet. Never said I didn't care about numbers, but the dyno is just a tuning tool for me. I like your style rickybobby25 we can keep this going forever. 
11-28-2006, 08:05 AM
#14
I just drove my car w/ the MS4 for the first time yesterday. The bottom end is actually more torquey now than w/ the TR230. This morning I ran thru the gears WOT for the first time and wow. This thing is a beast. The idle quality is not too far from the TR230(the people that heard the sound/lope say they can hardly tell the difference), and in my opinion just as streetable. I am still running my tune from the old cam and I'm sure w/ some tweaking it will only get better. I'm running my stock heads, but I removed the rocker boss in the intake port, narrowed the valve guides, blended the seats & bowls, and removed casting roughness(minor porting, no milling). No flycutting!
11-28-2006, 10:16 AM
#15
Originally Posted by rickyracer25
sweet I would be pissed if I did a head & cam swap and only be in the 12's.
11-28-2006, 10:29 AM
#17
I didn't check it. I said no flycutting b/c the cam is designed to be installed w/ stock heads w/o flycutting. I spoke to TSP and was told it should have between .06 & .08 clearance depending on gasket thickness. Would it be safer to flycut? Sure. Is it necessary? No.
11-28-2006, 10:42 AM
#18
There's a safety margin that one should have. If that safety margin is not there, you should set your rev limiter low, like when I had only .050" and had to set my old setup limit to 6600rpm. Wasted a lot of motor that way. So to get the most out of your cam, you really have to make sure you have enough clearance to cover your butt in case of mechanical over-rev.
Just because a manufacturer says something "fits" on a stock head motor, doesn't mean it fits with appropriate clearance.
I'm speaking in general here, not directly to you, 5.3LJimmy, so please don't take offense.
Just because a manufacturer says something "fits" on a stock head motor, doesn't mean it fits with appropriate clearance.
I'm speaking in general here, not directly to you, 5.3LJimmy, so please don't take offense.
