NPI Stangs in here

Since my car is undergoing the head swap--I still count for this

I had most of the basic bolt ons before a timing chain snapped which resulted in bent valves and shot pistons. I had a thread with pictures and it wasn't pretty. I should had replaced the chains when I installed the cams

I had intentions of staying with NPI heads, however since mine were destroyed and Winters hooked me up with some PIs I really had no option.

By far the best mod that was done on my car had to be the transmission work (aww yes...a lovely 4r70w here). The gears (3.73s) only helped with that and the car actually was capable of decent 60's.

My current setup, once I finally get it all pieced back of course, is going to be pretty basic but should surprise quite a few people. The car will be a full pi (heads/cams/intake) along with new pistons since I ruined 4 I believe after all is said and done..this car will be low 13s as I was running a 13.7-13.8 near 100 on the npi heads.

I will also have to get retuned to make sure im not looking at crazy a/f ratios, though once I get that settled, it's on to Houston Raceway

Wow - lets see the pictures of the carnage!

Being that I have the motor torn apart I will take some extra pictures today of some of the damage. The only pictures that I have aren't the best though are HERE. Don't want to take away from this thread any as I like the idea

The only "simple" mod that I was missing were longtubes, and that is about to change with this setup

13.97@100.5mph with NPI heads 3.73's, full bolt on's outside LT's and a built/stalled auto.

At 150,000+ miles I installed the following below. The best et was 14.20's at 97-98 mph. No dyno was done. The engine needed head work it started smoking every time it idled, so I went over to the dark side an installed one from an 01 model.

BBK CAI
BBK 75mm TB
BBK o/r H-pipe
Ford racing C springs
Ford racing Alum Drv shaft
Steeda under drive pulleys
PI intake
3:27 gears 5spd.
2 1/4 40 series flowmasters.

150,000 miles. Stock NPI heads/cams. stock tune, stock 2.73 gears.

8.82 at 78mph, 1.97 60 ft.

and to think that the car that did that now sits with a 5.4 in it

98 gt 5 speed

k&n cai
pi intake
pi cams
mac o/r h pipe
mac cat back
steeda udp's
steeda t/a @ 15*
3.73's

225.5 rwhp, 270.2 rwtq, running rich as hell!!!


i wish my new motor was in so i would have some good numbers to post

vortech v-1 s-trim with 10# pulley
snow performance meth kit
pi cams
livernois pi intake conversion
90mm lightning maf
39# injectors
anderson powerpipe
75mm accufab plenum
stock headers
bassani catted x-pipe
magnaflow catback

prolly missing a few little things but that is major stuff. i am making 375 rwhp and 389 ft lbs of torque on a very very safe tune from livernois. i am putting a paxton intercooler on this winter for my last performance mod. i see no need to do heads now cause i have just about reached the stock rod potential already. if i ever blow this thing up then i will do a shortblock with ported heads. no track times. its a convertible that weighs damn near 4,000 lbs!!!

I don't have a NPI Mustang but I do have a 1996 Ford Thunderbird LX Sport that is N/A.

The mod list:

- Removed Air Silencer
- Stock Airbox and Filter
- 2002 Mustang GT MAF
- 2004 Mustang GT Intake Tube
- 75mm BBK TB
- C&L Plenum
- FRPP PI Intake
- Port & Polished PI Portmatched NPI heads
- Crower Stg 2 PI SC Cams
- 1996 Teksid 4.6L Bored and sleeved to 3.7" AKA 5.0L Big-Bore
- Diamond 2V 3.7" Flat top pistons with valve reliefs( 10.5:1 Compression Ratio )
- Manley Forged Rods
- Stock Cast 4.6L Crank
- Cobra Oil Pump
- TSS Billet Oil pump gears
- Mark VIII oil pan
- Kooks mid length ThunderBird headers
- Magnaflow 3" Spun Cats
- Magnaflow 3" X-pipe
- Magnaflow 2.5" Offset/Center out muffers
- 30 lb/hr FRPP fuel injectors
- 190 GPH fuel pump
- 4200 RPM PI Triple Disc TC
- Built 4R70W auto transmission
- Dyno-Tech MMX Driveshaft
- FRPP 99 Cobra Trak-lok differential
- FRPP 4.30 gears
- Custom SCT Dyno-tune( Safe 12.5 AFR, 20 Degrees total timing on 91 Octane fuel ).

348 RWHP - 366 RWTQ -> Not a MISPRINT...

Note 1: NO CAI, NO UDP's, NO Electric Water Pump, NO Longtubes Headers
Note 2: Catted Exhaust with safe conservative tune on 91 Octane Fuel
Note 3: 363 RWHP 370 RWTQ with Power Steeriing Bypass belt and turn downs bolted onto the X-Pipe instead of the mufflers on the same above tune with 91 Octane fuel.
Note 4: Car had Power Steering Issues before and when it was on the dyno, Power Steering pump has been replaced after car was on the Dyno. That *may* play into the discretion between running the PS and PS Bypass belts...