i was wondering what upgrades could i do to my EXT Cab 4.6 V8
i wanted to reach somewhere about 300-350 hp w/o major add ons like turbo/supercharger

 

 

<--- LOL

Best thing I can tell you dude is to research custom tuning, and drop your expectations for HP numbers with out supercharging.

 

Right now your at 220hp/265tq (non PI 4.6L)
Cost wise for a N/A numbers like what your looking for, you would be better off with a PI 5.4 swap, a set of heads, LT's, E fans and a custom tune. Even then, your looking at 3-4k+ and thats being generous. Otherwise, forced induction..


99+ PI 5.4L= 260hp/350tq

 

i didnt know i was that low on hp i quess ill be looking for a turbo or would it be easier to get to 250 w/o turbo

 

My 2008 5.4 is rated @ 300 hp. I now have an Edge programmer and Magnaflow exhaust and I would be lucky if I'm pushing 350 hp now.

 

when i dynoed my truck i had a CAI, E-fan, shorty headers no cats true dual into Dynomax super turbos. my truck made 190 hp and 234 Ftlbs at 4,200RPM thats Rear wheel HP the numbers in the book/from the factory are fly wheel. lots of drive line loss.

ive added longtubes a tune and free flowing mufflers since then i need to go dyno again im prob around 220-240 Rear wheel hp now.

 

If you have a lot of miles, I wouldn't recommend any forced induction without a rebuild. A lot of 4.6 guys swap to PI 5.4's when theirs take a dump and love the gains. A fairly easy swap and lots of info around here to walk you through it. You could expect to find low mileage 5.4's for around 1000-1600. From there you can start bolting things on such as exhaust with headers, high flow cats, intake, E fans and follow up with a tune. Guarantee youll love it over your stock non PI 4.6

 

my truck has 188k

 

I wouldn't do ANY mods to an engine with 188k with the idea of getting more power without doing a complete rebuild.

 

let me know when you dyno again take a pic of the screen

 

Crappy pics but heres the old dyno run.

 

dang thats low (mine is bone stock) and also where did you buy your tune
let me know if you do another dyno run because im about to put long tubes on it and 4.10's and a tune

 

Your best bet(if you wanna keep the 4.6) is rebuilding the block and switching the heads out with PI heads and a set of mild cams. I would say if you did the head swap and put some long tubes on there with a decent dual exhaust set up and ran efans and got it custom tuned you might pull 350 at the crank. But even if you hit that number you'll lose a decent chunk in the drivetrain and those will be peak numbers at really high RPMs. You would be better off buying a low mileage 5.4 and trying to find a used supercharger. I have a non-PI 4.6 in my truck also. Its procharged and intercooled, has dual exhaust, 4:56s, and a 90mm MAF and I doubt make much more than 280 or so at the wheels.

 

yeah the 4.6L in the trucks doesnt do that great. in the mustangs they haul ***** but not so much when you add on a couple more 1,000lbs.

if you want lots of power get a PI 5.4L i have a 99PI block and heads sitting in my basement for when i have the money to rebuild it.

i drove a stock 2001 Super crew with a 5.4L it seemed like i didnt have to beat the motor to get the truck to move. thats how my truck felt after i put the tune on it it brought all my mods together so the computer could finally know whats going on.

i have Sniper custom tune by my self. no wait times its 425 bucks for the program and interface but you can tune 2 ford gas from 96-04 maybe even more now. i went half n half with my buddy so we each only payed 200 bucks for a custom tune. its very simple drop box's for everything and sniper has awesome customer support. we had an interface prob and within a week they sent us a new one free. made a world of diff in my truck. shifts firmer and holds out the RPM longer on WOT runs. no more CEL from EGR or rear o2's just feels like a diff. truck. i love it. wish i woulda got it sooner.

heres my F150 thread on it.
https://www.f150online.com/forums/ch...-sniper-2.html



See easy drop box's
if you look around you could prob get a better deal but 350-430 is avg price.
Here is snipers site.
http://www.deltaforcetuning.com/Spec...-p/sp-5000.htm

Hope that helps. i love the sniper! no wait time is awesome!

oh dont post in that sniper thread dont wanna bring another thread back from the dead...