[MustangJon255]

Hey everyone,
So i've been trying to figure out what to do with my Mustang lately...Cam to NA motor, put on a whipple, etc...
Since I'm in 18 and don't make 50 grand a year, cams would seem a little smarter.

I wanted to get the Comp XFI SPR stage 2 Cams, which are the biggest that will fit on the stock Head.

Here's the Specs

Opertaing Range- 950 to 6900
Duration:
Intake- 264
Exhaust- 275
Lift:
Intake- .535
Exhaust- .550

I have the mods necessary so what I'm asking is have people have any experience with these? Drivability etc etc

Thanks
J.Petter

[07stanggt]

I have those cams in stock if your interested. I can get whatever springs and retainers as well.

we are talking about 127300 correct. Blackhavok on this website runs those cams. before he was s/ced and now. He ran 12.6s. and put a little less power to the wheels then me. lets say i got a good dyno, either way we were even and his best 1/4 was 12.6 with a little less trap speed then me. personally if your sticking with stock heads then save your money and go with stage II nsr cams. the idle is the same and the performance is the same or better on stock heads n/a.

But you can pm him and ask him about drivability. he called them stage IIIs but he has 127300s.

[07stanggt]

nevermind sorry looking at your specs your talking about 127500s. they recomend phaser limiters with those and springs. lot of coin. plus you need at least. a 3.90 rear, you loseing a lot of low end with those cams on stock heads. i dont know anyone on this site running those on the street.

my first recomendation stands. you'll make more peak numbers with them but the low end you lose it will be a dog on the street. but like i said before i can get you a decent price on all of it.

[MustangJon255]

I already have a 4.10 gears, LT headers, C&L racer intake, as well as some other bolt-ons. I have acess to a dyno and HP tuner's suite... At this point getting an NSR cam and an SPR cam is all decided by power and idle. I'm looking for a hot idle to impress all the ladies
I should make a 12.7 or 12.8 when my race wheels come in... would think that i could get in the low 12's with a big 'ol cam.

[07stanggt]

Originally Posted by MustangJon255 I already have a 4.10 gears, LT headers, C&L racer intake, as well as some other bolt-ons. I have acess to a dyno and HP tuner's suite... At this point getting an NSR cam and an SPR cam is all decided by power and idle. I'm looking for a hot idle to impress all the ladies I should make a 12.7 or 12.8 when my race wheels come in... would think that i could get in the low 12's with a big 'ol cam.

Good luck with it my friend.

Lot of ways to get a big idle. You may gain 10 to lets say 15 if your lucky up top over other cams, the problem is you will loss 20plbs and hp down low. Its all what makes you happy though. Understand that the only way those will help your 1/4 mile is if your launching off the limiter. and that only applies to the track. but if you already understand all that then hey, tear it up. It will be interesting to see exactly what they do for your times though. they will sound good thats for sure.

What do you run now and what tires are you expecting to get you 12.7s?

I can price it out for you if your interested. Phaser limiters, springs retainers and cams. I have pretty good priceing on comp stuff.

[MustangJon255]

I ran a 13.0 w/o my new LT headers on street tires...each wheel ways 55lbs. The new wheels are much lighter (no number exactly) and i'll have ET streets on the back and skinnies up front. I'll be going back to the track to see what my new times will be w/ the LT's.
Here's the thing...I DON'T know very much about cams for these motors...being OHC an all. So I'm just looking for a recommendation here. lol i'd much rather avoid cams and strap on a whipple but ya know... 5G is hard to come by at my age lol Old Navy just doesnt pay enough hahaha

[07 STROKER]

ive been called a liar twice now when ive told people i have cams.....they dont believe me cause they idle so nice. to an untrained ear.....But i can hear them

[07stanggt]

Originally Posted by MustangJon255 I ran a 13.0 w/o my new LT headers on street tires...each wheel ways 55lbs. The new wheels are much lighter (no number exactly) and i'll have ET streets on the back and skinnies up front. I'll be going back to the track to see what my new times will be w/ the LT's. Here's the thing...I DON'T know very much about cams for these motors...being OHC an all. So I'm just looking for a recommendation here. lol i'd much rather avoid cams and strap on a whipple but ya know... 5G is hard to come by at my age lol Old Navy just doesnt pay enough hahaha

Well as far as not knowing much about these engines and cams the old rules still basically apply, as a general rule, the bigger the cam the more top end you gain and the more low end you loose. The good thing about our car is the VCT, if left in tack with mild cams it kinda helps you get the best of both worlds. Mild cams you can gain 30+ up top and loose 0 down low. that is an awesome thing for a street car and for performance at the track. I would bet money that with the cams your talking about i wouldnt run any better 1/4 miles times if i left the rest of my setup the same. The reason being, lets say i gained 15 more up top over my NSR's best case scenario. thats 1.5/10s off my time theorecticially, but i launch at 3000 rpms where i lost 20plbs of tq and hp all the way up to 4700. hard to say i would gain anything. now if i were running slicks and set up for the track yea, ill gain everybit of that 1.5. see what i mean, now if you added ported heads to those cams, yea the gains would be compounded and your talking picking up 70 or 80 horses, still loseing down low though. Im a fan of the nsr cams on a cost to performance ratio but it depends on your goals. and if you want the sound, your not gonna get that from the stage IIs, I got a custom grind that hits hard or you could go the hot rod cam route, but the performance gains are not going to be there with them. Maybe the 127500s are what you want, just keep in mind, your gonna loose noticable low end power and your gonna need to launch at high rpms to see the gains at the track, but thats what real drag racers do anyway right.

By the way 13.0 flat on street tires with your mods is pretty damn good dude. GOOD JOB. The et streets cut 4/10s for me, but i launch off idle on street tires. might not gain as much for you. The headers wont do much for you , probably good for a tenth

[07stanggt]

You got three choice if you want the idle of a big cam, 1 get a big cam like the one your looking at, by the time your done in parts alone your looking at 1200+, 2 get the FRPP hot rod cams, 3 i got a grind that idles hard, you need the limiters with it, should gain about 25 like the hot rods and cost about 900 with everything. hot rods you can pick up for less i hear.

[MustangJon255]

what are some ways to combat the lose of low end torque in a stick shift? If I had an Auto, a stall would be the solution...

[07stanggt]

well the 4.10s. you have them already. Just have to see how it is and go from there.

[chad05gt]

How did the cams turn out? Dyno? ET? Do you like them?
Is the idle stock or not?

I run 12.7's w/ stock tb/cams/heads already with drag radials on stockers ( TR6060 w/ 4.56's ).

I would like a cam but do NOT want lope, and do NOT want to loose torque; are there any cams that may add 20 or so ft/lbs w/ same rpm range as stock; I sort of thought the nsr stage II's were that... please correct me if I am wrong (and save me some coin)

[stangNV]

the stage I's as mentioned above gain more than 20 pounds of torque according to 07 stang

[07stanggt]

Originally Posted by chad05gt How did the cams turn out? Dyno? ET? Do you like them? Is the idle stock or not? I run 12.7's w/ stock tb/cams/heads already with drag radials on stockers ( TR6060 w/ 4.56's ). I would like a cam but do NOT want lope, and do NOT want to loose torque; are there any cams that may add 20 or so ft/lbs w/ same rpm range as stock; I sort of thought the nsr stage II's were that... please correct me if I am wrong (and save me some coin)

stage Is will gain you some torque and operate in the same rpm range. stage IIs will gain you some more hp up top, not so much torq but will gain you some peak on peak and not lose any down low.

[MARKCORE]

Any updates on this?? I'm looking at the XFI™ SPR STAGE II for my '06 also.

Mods - 62mm TB, o/r x pipe, axle backs, dyno tune, JLT CAI, 3.73's, LCA's, nittos 555's for a 13.0x@106 *LT's going at when the cams go in as well as 4.10's.

Im just looking to get into the mid 12's and have a fun street car.
What are your thoughts?!

THX

[07stanggt]

not sure who your asking for an update but the cam you mention with long tubes and 4.10s will certainly get you the times you want and probably more if your already running flat 13s. as for streetability that is a matter of opinion and ill leave it up to the pundints on here, im all argued out.

These are nsr cams that have me where you want to be. your looking at a more aggressive cam.

Video of another record and chevy down - Photobucket - Video and Image Hosting

Video of another record and chevy down - Photobucket - Video and Image Hosting

[MustangJon255]

(totally hoping to revive this thread...)

hmmm....I see what your saying about the hot rods, NSRs, and the big ones.

My mentality on the whole things is "Go big or go home". And not just with cams, but with every mod. It's just weird to put a cam in the car that makes 25hp that sounds like it makes 80 ya know? hahaha I think the best way to counter loss of low end torque would be playing with the rear gear ratio- stepping it up from a 4.10...lol but I drive this puppy to highschool. You better beleive they all HATE me hahahahaha

[Mickey]

lucky highschooler

[Arsenal]

+1

[psycho bob]

well knowing you're in highschool i'm not even going to mention my suggestion then. eehheeemm cough cough nitrous cough cough about same price as cams and run high 11's to low 12's immediately