hey fellas i want to get performance cams for my 03 gt, the question
is what brand,& what kinda to go with.
the idea is to get Moore hp and better sound,any idea how much the cost, and what other part do i need to replace?
thanks
ive heard great things about VT cams and Comp Cams. depending on which cam you get, you will need to replace the springs as well (well, not really need, but highly recomended, unless you want to replace the heads later on).
by the way, are you going n/a or blown? this plays a huge factor into what cams to get.
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I agree about the VT and Comp cams. Both companies are serious about Mustang performance, and their products are comparable in price and performance. Do some reading (both have good web sites with lots of info) and pick your poison.
In general terms, the more cam you buy, the more necessary new springs (I like the Comp beehive springs, and with a hot motor on nitrous, I'd go with new retainers [titanium if you're paranoid like me] too). If you don't replace the springs and jack up the power, you'll end up with valve float and ultimately some bent metal.
It is POSSIBLE with the trick tool some companies sell to do the cam swap with the heads still on the motor, but I'd recommend that you pull the heads to do the job unless you've used the tool before and know what's what. I know several local performance shops that insist on removing the heads in order to do the job "right", though of course this is more labor. In general terms, its also a great time to have the heads ported - which in and of itself can be of great benefit to how the motor performs. No extra labor involved if you do both jobs at the same time, of course! Fox Lake does a great job with porting these heads, and charge $750 last time I checked.
I highly recommend some dyno time to get you dialed in, and a way to have at least 2 seperate stored tunes (handheld tuner or multi-tune capable chip) so you can swap back and forth between your NOS tune and your regular NA tune. A third, "track" tune would be a good idea too, if you send her down the 1/4 mile very often.
The thing that gives NOS a bad name in some circles is a bad tuneup (and the fireworks and problems that can stem from that).
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tripleblack
"You can never be free until you let yourself go."
i am about to get some cams to before i get the blower, so if i have the blower cams installed is it supposed to lower compression??? so i probably wont see as much of a gain from a blowr cam compared to a cam if i was keeping my car n/a is that right?
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2002 true blue metallic gt,5-spd,eibach swaybars/springs,bilstein shocksandstruts, MM xtreme duty LCA's, frpp 4:10's, diablosport,steeda tri-ax,k&n fipk gen II,dumped flows exhaust, catted midpipe, steeda u/d,mach 1 grill del,mach 1 chin spoiler...
thinking about...vt stage 2 blower cams, vt stage 2 heads, built rear, forged bottom end, baer brake kit and kenne bell...or still might sell for a 03/04 cobra before i do anything major to my gt
I do not think cams can lower compression. Getting blower cams before a blower is the right thing to do. You will still see a gain from the cams but they perform better with a blower. I have had both comp 262's and 270's. They are both good cams, but I would go with VT stage II blower cams. Have heard very good things about them. They seem to be better then comp. Comp cams seem to be off more on install.
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1998 GT Saleen replica
New forged internals w/cobra crank, TEA CNC ported heads w/ comp cams XE270AH, AccuFab throttlebody and plenum, Spec III clutch, TKO 600 trans, aluminum drive shaft, 3:73 gears, BBK long tube headers, 255lpm intank fuel pump, Dyno tuned, Polished Procharger D-1sc 12psi, 3 core intercooler. SVO hood and 18in Budnik wheels w/toyo tires. Caster/Camber plates BBK lowering springs. Car web page
Comp cams XE262AH,T-45 with tri-ax shifter for sale
i am about to get some cams to before i get the blower, so if i have the blower cams installed is it supposed to lower compression??? so i probably wont see as much of a gain from a blowr cam compared to a cam if i was keeping my car n/a is that right?
Blueoval is right on, so I'll just reinforce what he said.
The performance gain from any cam is commensurate with a lot of other factors. Cams optimized for a certain amount of boost is what experts recommend - and a KB can put out a LOT of different levels depending on how you pulley it and how stout your bottom end is.
In general terms, going much above 450rwhp without building your bottom end (imo - and opinions vary on this, of course) can get you in trouble. So you really need to think about what OUTCOME you want before making your plan.
The blower cams will function fine with the proper tune, even in an NA environment - but budget some good money for dyno time to discover these proper tunes.
A switch chip or SCT tuner can hold the various tunes you end up with.
Cam selection is the black art of racing. It ranks first among the closely held secrets of engine builders and winning racers. If you spend a little time on the web sites reading their white papers and poring over the graphs, you'll see what I mean. Its a deep subject.
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tripleblack
"You can never be free until you let yourself go."
yeah yeah i know what you mean now im just thinking off getting a good set of cam and a set of ported heads(by the way how much power do you think the engine will be making at that point) then i think i will forge the bottom end right before i get the kb...and new rearend lol
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2002 true blue metallic gt,5-spd,eibach swaybars/springs,bilstein shocksandstruts, MM xtreme duty LCA's, frpp 4:10's, diablosport,steeda tri-ax,k&n fipk gen II,dumped flows exhaust, catted midpipe, steeda u/d,mach 1 grill del,mach 1 chin spoiler...
thinking about...vt stage 2 blower cams, vt stage 2 heads, built rear, forged bottom end, baer brake kit and kenne bell...or still might sell for a 03/04 cobra before i do anything major to my gt
yeah yeah i know what you mean now im just thinking off getting a good set of cam and a set of ported heads(by the way how much power do you think the engine will be making at that point) then i think i will forge the bottom end right before i get the kb...and new rearend lol
The power you get will depend on your cam selection as much as anything. Assuming you go with a pair of cams appropriate to a KB instead of a maximum effort stroked NA, I figure you'll still see an extra 20-30 hp from the cams, and about the same from the ported and polished heads. Decent gains, but not earth shattering.
Added to maybe 100-150 from a streetable KB rig (with the intercooler, of course), and you should be close to that 450rwhp point I talked about.
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tripleblack
"You can never be free until you let yourself go."
yeah thats what i was thinking about the cams and heads anyways thanks for the info guys
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2002 true blue metallic gt,5-spd,eibach swaybars/springs,bilstein shocksandstruts, MM xtreme duty LCA's, frpp 4:10's, diablosport,steeda tri-ax,k&n fipk gen II,dumped flows exhaust, catted midpipe, steeda u/d,mach 1 grill del,mach 1 chin spoiler...
thinking about...vt stage 2 blower cams, vt stage 2 heads, built rear, forged bottom end, baer brake kit and kenne bell...or still might sell for a 03/04 cobra before i do anything major to my gt
2003 mustang gt cam swap 
