Hello guys, 1st time posting to this website. To start off, I own a 98 NPI GT with full bolt ons. No gears at this time, 5 speed. My goal with this car is about 400 to the wheels, a little less would be fine if my budget doesnt allow it. Does anyone have any ideas on what would be the best to get to my goal? I have about 5k to work with total. I have been pondering this for two years now. Could a straight motor build get me to 400? or would i def need forced induction? From what im seeing, the 98 is such a hard motor to work with. I have read many forums about the PI swapping and such, but the PI swap alone doesnt get me to where i want to be, and doing PI raises compression to much for a decent boost. So any opinions would be greatly appreciated!
Any opinions? 98 NPI GT
- Thread starter bah27
- Start date
Top end kit, easy way, well in your budget-
1996-04 Mustang 4.6L 390/375 Top End Engine Kit, 38Cc Chamber Heads
1996-04 Mustang 4.6L 390/375 Top End Engine Kit, 38Cc Chamber Heads
I know this might be the wrong answer, but I would sell the car and use the money from the car and the 5K to upgrade to a cobra or something nicer. I have a 1997 GT with bolt ons and the PI Swap. To make 400 HP, you are going to need to rebuild the motor with forged internals and run some boost. That will both cost well over 5k to do it right. Just my $.02
hey everyone, sorry it took me so long to respond!!! i couldn't log on for a few days, not sure why. I bought a vortech v2 (2001 complete kit with aftercooler), so i will have to buy all the parts to make it work w my car. not sure how much power im going to get but im hoping to push 10psi and hoping around 370rwhp?
You can easily max out the stock short block capacity with just messing with the pulley sizes. What supporting mods (fuel, tuning) are you planning on using?
I think you'll me very happy with the performance. try not to get too wrapped up in dyno numbers also.
trap speeds>dyno #'s
I think you'll me very happy with the performance. try not to get too wrapped up in dyno numbers also.
trap speeds>dyno #'s
I currently have K+n cold air, bbk throttle body (not sure of size), underdrive pullies, livewire dist/wires, BBK LT ceramic headers, borla exhaust.
Im getting a 290lph fuel pump with ford 42lb (i think) injectors. its going to get dyno tuned with SCT tuner as well
My experience I would tell you to don't bother with a PI swap or any heads that are base off the stock heads or ported stock heads.
Go for Trick Flow heads, these heads are a new casting that's way better then the stock heads.
There is no problems with piston to valve clearance with the trick flow heads.
Before I replace my block with a mmr 4.75 block I was at 420 hp with a completely stock 96 block with trick flows 44cc heads, typhoon intake,42 pounds injectors, 2 fuel pumps, a BA3000 MAF and a Vortech V2 22psi blower at 11 pounds of boost with the air/water power cooler.
I had to keep the car on a safe tune so I wouldn't blow up the stock block.
Hope this give gives you a idea.
Go for Trick Flow heads, these heads are a new casting that's way better then the stock heads.
There is no problems with piston to valve clearance with the trick flow heads.
Before I replace my block with a mmr 4.75 block I was at 420 hp with a completely stock 96 block with trick flows 44cc heads, typhoon intake,42 pounds injectors, 2 fuel pumps, a BA3000 MAF and a Vortech V2 22psi blower at 11 pounds of boost with the air/water power cooler.
I had to keep the car on a safe tune so I wouldn't blow up the stock block.
Hope this give gives you a idea.
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