[K7cobra]

dose any one have the full bolt on list for the 98 cobras and how much hp and et a full bolt on car can achive that would be great i seen some dos and donts with bolt ons so im asking all my fellow cobra owners

[ReverendDexter]

There's not a whole lot to do with a B-port in terms of bolt-ons.

CAI will net you a few horsepower (K&N claims an extra 12 at the crank).
Exhaust certainly helps.
B-ports already have UDPs, so no real gain to be had there.
All a tuner can really do is up your rpm limiter.

Really, if you want more power, you're looking at cams or boost.

And remember - up until the Terminators (which I believe should have been Mach 1s), Cobras were designed for the road course, not the drag strip. Everything that's different on them from a GT is designed to make them work better in the twisties, and if it dropped ETs, that was just bonus.

EDIT: Gears are a HUGE help to get those cars quicker off the line. 3.27s don't really work well for a car that has a powerband between 4800 and 6800 rpm. 4.10s are the recommended all-around gear, with 4.30s being better for a dragstrip queen.

[K7cobra]

thanks i was thinking about 4.30s

[lilspanky9119]

I have 3.73's and was thinking to upgrade to 4.10's, the biggest difference between the two is acceleration correct? Or does it raise top speed trap? Sorry I dont know to much about the gears, thanks for the help.

[bigz5000]

K7- from what i have read through various threads, if you are going to boost the car, you dont want that high of gears.

[ReverendDexter]

Originally Posted by lilspanky9119 I have 3.73's and was thinking to upgrade to 4.10's, the biggest difference between the two is acceleration correct? Or does it raise top speed trap? Sorry I dont know to much about the gears, thanks for the help.

Gears trade speed for acceleration.

The typical example I use is to think of them as a breaker bar.

With a 1' breaker bar, you can apply X amount of torque to a nut. Go to a 2' breaker bar, and now you move the nut half as many degrees of rotation with the same movement, but you do so at twice the torque.

That's the reason that people say to use higher gears when you get boosty - your tires can only handle so much torque before they just spin. By reducing gear, you're compromising your ideal gear ratio to effectively reduce the amount of torque hitting the tires, and thus reduce wheelspin.

If you can hook it, though, your perfect gear ratio is whatever will put you through the traps at your shift point or just slightly past it.

[K7cobra]

there are a lot of things up in the air i like n/a power i might do somthing with a blower or turbo not sure

[ReverendDexter]

Originally Posted by K7cobra there are a lot of things up in the air i like n/a power i might do somthing with a blower or turbo not sure

Depends on how fast you want to go. There are not many N/A 4Vs out there pushing over 320rwhp. Sure, a few examples here and there that get brought up to disprove that, but there's just not the aftermarket like there is for 2v cars (makes sense, as there's considerably fewer 4Vs out there) where you bolt on a set of TF heads and magically make 40 more whp.

If you drive it on the street, trying to stay N/A becomes much more difficult. Especially with how high rpm these motors are already, cams really work by making the motor more efficient at a higher rpm. Where are you really gonna go when you make peak horsepower at 5800 rpm stock and the motor already pulls to the fuel cutoff at 7k? Spin it to 8500? 9k? Meanwhile, you get get a supercharger and push 450whp without nearly the difficulty and loss of streetability.

[96cobraMystic]

Agree boost is the fastest cheapest way to go i have 4.10's myself would like to ride in a cobra with 3.73's i drive from fort stewart Ga to Greensboro NC many weekends have no issues and still get around 21-24 miles a gallon on a motor with 121,000 miles on the motor and many if not all bolt-ons also. About to do a ported b heads and cams in the next couple weeks.
IMO.. this is the order of upgrades id to on one untouched cobra.. Gears, Off road H pipe and cat back long tubes are great too! CAI fender-well, short throw shifter, steeda pullies, and TB/bigger maf and tuner( not really needed til ported heads/cams or boost).

[SWEET2KSTANG]

the B port head cars i been around seem the same to me as far as gearing is concerned, i personally would do 4.30's. antoher item to consider would be shrtening the intake manifold runners.

[majorownage]

cai, single blade tb, o/r x pipe, and degree in your stock cams.

The single best thing to do is have your intake runners cut. Worth 35rwhp.

With a tune, you don't lose any lower end.

Don't believe me? talk to na_svt on modularfords.com

[SWEET2KSTANG]

single blade t/b's are a waste on a n/a 4.6 4v. ported stockers are plenty sufficient.

[majorownage]

Originally Posted by SWEET2KSTANG single blade t/b's are a waste on a n/a 4.6 4v. ported stockers are plenty sufficient.

i like your term "sufficient"

[SWEET2KSTANG]

the 4.6's just dont need that much t/b when they are n/a

[majorownage]

Originally Posted by SWEET2KSTANG the 4.6's just dont need that much t/b when they are n/a

a smallerish single blade is better than stock. Its all about laminar flow.

[SWEET2KSTANG]

no single blade t/b is going to show no more gains over a ported stock on especially a stock long block 4.6 4v.

[K7cobra]

i just want to make as much power as i can N/A un less i can find a blower for really cheap

[LGHTNG02GT]

the best bang-for-the buck is by far a ported short runner intake. guys on SVTPerformance with them (either they do it themselves or ship it to NA_SVT on the forum) can and have hit slightly over 300rwhp with the short runner, a full exhaust with LT's and a tune with nothing more than timing adjustments in it. i plan to do the short runner mod to my intake this winter. there is an AWESOME write-up in the How-To's on SVTPerformance i will use as my guide.

just skip all the little dumb crap like TB's and junk like that. on that B head 4v's, you want LT's, off-road pipe, IMRC deletes, the short runner and a tune with alot of timing added to it. and dont fear the gear in your car!!! i went with 4.10's for mine and kinda wish i went 4.30's now.

[K7cobra]

cool can you post the short runner mod wright up on this thread im also going with 4.30's this winter also porting the intake

[bitemark46]

Full bolt-ons I made 304rwhp. Then I made a shortrunner intake and made 320rwhp on 93 octane.

-Mark