[sal33ns281]

i think 450 is a lot for a stock engine.you should be good at 380 or 420.so what kind of fuel system are you running?injectors, mass air and fuel pump. i am doing a twin turbo on my car at the moment i should be finish in a week. i got pics

[ReverendDexter]

Originally Posted by 98 cobra so I f I boost can it hit 11s on stock irs with some slicks

Um, no.

'98 Cobra does NOT have stock IRS.

[Goblin]

Originally Posted by BizCutt 38's limit you at 500? wow mine made 697 on pump gas... and does tubing not effect lag time??? if it s a straight quarter milecar with a 2 step id say ok...but a street car??? hmmmmm

Do me a favor and re-read what i originally posted. I didnt say 38mm wastegates are done at 500hp. I said eventually, a 38mm wastegate will limit how much power you can make. So, if he has his eyes set on a number above 500rwhp, he should consider a 44mm wastegate now, so he doesnt have to upgrade down the road from the 38mm.

As far as pipe length is concerned, show me a dyno graph where pipe length made a difference in power OR boost response. Whether its a street car, or a race car, the length of the charge tubing has little, to no effect on boost response and power production. Many people believe the STS Turbo system for late model mustangs and GMs are boost lagging turds because of the long charge tubing. Nothing could be further from the truth. Ive driven a few 05+ GTs with the Squires systems, and they respond just as quickly as any other system on the market.

Ever taken a look at Mike Murrilos new Outlaw 10.5 car? If not, take a look at where he's placed the turbochargers. Then watch some of his videos of that car in action. For twin 88mm turbos, it spools rather quickly... just as quickly as the rest of the Outlaw guys running turbochargers.

Originally Posted by 98 cobra so these cobra are not very good engine that sucks. I want to pull low 12s do able on stock internals

The engines in the Cobras dont suck, its just the pistons and rods that hold these engines back.

[98 cobra]

Originally Posted by sal33ns281 i think 450 is a lot for a stock engine.you should be good at 380 or 420.so what kind of fuel system are you running?injectors, mass air and fuel pump. i am doing a twin turbo on my car at the moment i should be finish in a week. i got pics

yes please do post the pics , right now im so confused, also so if it had 420 at the wheels what would that be good for in the 1/4 mile ,

[Goblin]

420-450rwhp is enough for 120-125mph trap speeds, with 10 second ETs.

[ReverendDexter]

...assuming a proper suspension setup.

[rk_2000_Z/28]

Originally Posted by ReverendDexter ...assuming a proper suspension setup.

Exactly!

There is no magic formula that you can just insert HP rating 'A' into car 'B' and get a set 1/4 time.

This guy is a regular on tech and seems to really know his stuff.

Finally, N/A Stock longblock 4.6 Cobra runs 11's - LS1TECH=

Check out this thread, and if you are not a member than you might think about joining so you can shoot him a few PM's.

Basically he is running in the 11's with just a hair over 300 to the wheels, on the stock long block. It isn't the HP numbers, it's the setup.

[Goblin]

Originally Posted by ReverendDexter ...assuming a proper suspension setup.

Ofcourse. Setup is more important than power.

[dmachine22]

I read that article, that is one of the most impressive cars i've seen in sometime!

[bitemark46]

Hi there,

You don't need thousands of dollars in engine work and a power adder to just run low 12's. If this is your DD you can get the car to run 12.6-12.8 in full street trim on radials and bolt-ons. Just got to select the right parts. A turbo kit will run you atleast 6k. If your ultimate goal is only 450rwhp then you don't want to build the bottom end just grab your basic Vortech V2 S-trim kit and keep the stock pulley (8psi). Keep the timing within ran and keep her runnin a little on the fat side. You won't get to 450rwhp but it'll be around 400-420rwhp. Plenty of power to run low 12's. You'll spend half the amount of money and achieve your desired ET. If you have any questions, I'd be happy to help.

[98 cobra]

Thank you bt I already have the turbo ,and ,sct ,wastegate ,and the hks bov and 60lb injectors and a aem wideband and I want to go to 600 or more later on , bt for now low 12 to high 11 and not get beat by those fing stage 3 srt 4s from roll or dig. Also whaat all did you do for weight reduction, I have a tubular k-member on its way, also thank you for the help hopefully i can get more help with it

[bitemark46]

Well if you are set on going with the turbo I'd keep your block, go .020 over and drop the compression to 9.1-9.2:1. Keep the stock crank. Its forged. A simple valve job with a set of valves and springs will be plenty. Stock cams work great with turbos. As far as weight reduction I have the tubular front end, rear seat delete, lightweight race seat, alum driveshaft, alum FW, skinnies, CF hood, lightweight battery, no smog pump, no spare tire and jack, moot bar removed, a few other small items. I still have PS, PW, PB, and stock front brakes. -Mark

[rk_2000_Z/28]

Thanks for coming in and adding some input Mark.

[weems]

The 98 crankshaft is forged?

[bitemark46]

All cobra cranks are forged (96-current). -Mark

[98 cobra]

Well guys I called fastlane motorsports , I asked about a mid pipe from stock manifolds to a single out let for the turbo , and they said yes they can do it, so I was like whats the price and he says 3500 DOLLARS , and I was like shit thats alot , what do guys think about that price?

[98 cobra]

so then I found this looks just as nice as fastlanes and its alot more in my price range eBay Motors: 1996-1999 4.6 mustang cobra turbo kit, 4v, mustang (item 320248718374 end time May-12-08 11:38:07 PDT)
tell me what you think

[sal33ns281]

i dont know how to post pics here but i have it on my myspace. if you want to check it out on myspace my email is johnsouthamouth@yahoo.com

[ReverendDexter]

Originally Posted by 98 cobra so then I found this looks just as nice as fastlanes and its alot more in my price range eBay Motors: 1996-1999 4.6 mustang cobra turbo kit, 4v, mustang (item 320248718374 end time May-12-08 11:38:07 PDT) tell me what you think

I think you get what you pay for.

[03 R Code]

I think with fastlane you may be putting a lot of money on a name. If all you want is a mid pipe to be made into a Y then how much work could there be needed? Just buy a UPR off road X, cause they are only like $170ish (last time I checked), and modify that. Find someone with some exhaust welding experience and pay them... Or am I thinking in the wrong direction? It's not like your creating a one off top of the line race car here... But then again I don't know much about turbo systems and the pipping needed.