2006GT500

You really want to turn some big numbers and times N/A, get a big bore kit from VT or someone, get some port and polished heads and some cams.

I'd like to see some dyno charts on that guy from mustangforums. This guy has spent a ton of money staying N/A and I've done less mods for less money and make more power. I know the point is he is N/A but he wants to reach his goal using nitrous which isn't exactly N/A. I think the guy should do a big bore kit and see what he can do with that.

mustangfan123

I saw that JDM gained 50rwhp with ported heads and a stroker motor so a stroked out 4.6 should yield some more power.

GRAYPNY

Well if wasn't to change anything else on my car with the mods that I have which would be the best cams for my car and how much additional H.P.?

mustangfan123

Comp Cams Stage 3 (30-35hp)

GRAYPNY

Thanks! I guess I'll start saving some money and looking for a good installer.

mustangfan123

They are 999.95 from Brenspeed. Install is about $600-800 from what I've heard so you need to save up for that too.

traffic142

Ok, I will weigh in.

My next upgrade will be some cams. Maybe if FAST ever gets off their butt and get us the new intake, but I digress. With my CAI, dougs tune, SLP long tubes, pulleys and 4.10's, I am almost half way to the S/C fabled 425 hp at the flywheel. The CAI and tune ran be about 650, LTs ran 1000 and pulleys and gears (installed.....600.00) so about 2300 so far, and a cam set up about another 1700 for a total of 4K and that should put me just above the 400 FWHP. Still over a grand under most SC prices and I agree with the above, not hurting the engine with the higher pressures.

In hindsight, if you get a new GT and want 425 hp, save your money (hard to do) and do one mod and get a SC. But I dont know about you, I like my modding along the way. I Love the sound of the LTs better than the whine of a SC. That was a big smile of mine, when I cranked it up the first time after the LTs.

Doug,

Do you sell the cams/springs and a tune for us yet??? OR should we get a dyno tune to make the most of it.

And if I plan a road trip to Bama, will you install and tune it for me?

superman112

Dude I already have the stage 3's.. got them from Bamachips with the springs and retainers..now I'm gonna have to save up for the stage 3 heads.. although it seems Tillman have very similar heads as well.Hmmm... now I have seem on ebay some heads for sale. I wonder if it would be cheaper to buy a set of heads there and take it to a shop to have them Port and Polish it themselves?? Any ideas?? Now i have to decide if I should invest int he heads this summer or just wait for a supercharger for next summer.

mustangfan123

I have the same idea about getting tillmanspeed's cylinder heads or getting them ported at a shop. Hmmmm..... This may take some thought.

shatter

I think the supercharged cars are running 425 hp at the rear wheels so you need to be more like 475 hp at the flywheel. Or am I missing something here?

androdz

also remember if you are going turbos then cams will actually hurt you in the long run because they control the opening/closing of the valves which in turn would lead to lost boost between shifts.

Andrew

superman112

Shatter, you are right.. unless he means the amout of horsepower that the basic kits start off with. Not sure...

05fordgt

The Roushcharger is listed at 420 to 425 hp, and that number isn't to the wheels, but at the flywheel, so his sentiments are correct. Its when you look at aftermarket installs with custom tunes and more boost, then the number is different.

Dirty Sanchez

I went through the same thing a few weeks ago of what to do. Here was how i looked at it.

CAI+tuner = 500
CMDP's = 150
UDP's = 200
Cams + labor = 1600
LT headers and X pipe = 1250
Livernois port and polish job = 1700
= 5400 (if you install everything minus the cams) + shipping

This combo will probably put down 360-370ish hp and the same amount of torque (these are rough estimates).

A brenspeed Turbo kit (includes tunes, fuel, spark plugs, etc) cost 5800 shipped to your door and is capable of 500hp/500tq on the stock motor and is installed with general hand tools (I would think just as difficult removing and installing the heads and LT headers). With a turbo kit, you dont need any other HP mods, as changing the spring for more boost is cheaper and you wont max out the turbos on the stock longblock.

Just something to think about.

and for the people adding up number for parts......... lol it doesnt work that way. I love seeing people say they will hit 380-400hp N/A on these cars with the parts available. NOT GOING TO HAPPEN. My friend has all the parts i listed above plus a alum DS, LCA's, and 4.10 gears. He hit 368hp and 376tq with stage 2 heads and stage 4 cams. Ive seen maybe 3-5 people on these boards claim more than that, and i just dont believe it. Anyone can make a dyno graph on the PC, but until you see it in person its just someone talking.

superman112

that is true.. but when you have FI on your car you also have to think about the cost of all the other upgrades as well... fuel pump.. suspension...tires.. it does start to add up!! Dont get me wrong I want a blower real bad!! However I also want to get as high as I can running N/A too. I already have the LT headers with x-pipe. As well as the JLT II w/Dougs race tune and delete plates as well as the 4'10 gears. I also already have stage 3 comp cams ready to be installed. I see Tillman has some heads that seem to be very similar to Livernois stage 3's ( I think) for a few hundred less mind you. So now for me anyway its more of do I spend $2600.00 for the heads and to install the heads and cams ( at once) or do I spend $4,500.00 for a blower. That's if I go w/a Vortech. If I wanted a Whipple or KB then its at least $6000.00 when its all said and done. Man I need to get me a rich old sugar momma to give me some cash!! Ha ha ha.

2006GT500

See as far as I'm concerned I tell people all the time, yeah go get some cams they're great, or yeah go get a blower it's great, but I a lot of times forget to mention that I go smokin deals on both my cams and my blower and all my other mods for that matter. Also I, with the help of some friends installed everything on my car. I paid half of what a set of cams and springs and retainers cost for mine and less than half of what it costs for my procharger. These aren't cheap modifications, however deals can be had on superchargers if you're patient. Also realize that a lot of these guys making all the power in the world on these cars, they aren't driving them daily. My car is my daily driver and it is cammed and blown.

traffic142

question,

What is the stage 2 or 3 cams. I know Bama sells both the 127300 and the 127350, the latter one is for supercharged applications. Am I missing something here?

Also, brenspeed says use a larger TB? I know we are not talking about the bbk one? if so which TB are they talking about.

creedog

On their website I believe they did list the BBK as their TB bolt-on for an additional 7rwhp. But I am going to go w/ the GT500 TB w/ the spacer needed for fitment. There is only one place I know of that currently sells them. But for $400.00 (current price now) I am holding out hope I can find a used set.

superman112

The 127300's are stage 3. Brenspeed also sells them on his site. Not sure which TB he is using but I am thinking if and when I install the cams I already have w/the P&P heads. I will go with the GT500 TB. I believe JDM still sells them for $299 w/the hoses and the spacer. I remember Doug telling me he would look into offering those GT500 TB's as well. Not sure if he's going to.

Dirty Sanchez

Ya, if you already have alot of N/A parts, then its probably logical to continue on the N/A buildup. But as for Fuel, suspension, tires, etc.... this will need to be done on a FI or N/A car looking for performance. THe fuel part is included with alot of FI kits out there.