dynojet SAE corrected
this dyno reads slightly lower than a local Mustang Dyno on the same car

------hp------tq
3000 190 ---- 310
3400 210 ---- 330
3600 230 ---- 340.1 peak tq
4150 249 ---- 320
4350 249.9 -- 300 peak hp
5000 225 ---- 235


converter killed it
spark way off. i had to fool the MAF and fuel pressure to get 13:1 until 4000 then it went rich.
it shifted into OD at 90 mph. no way to prevent it.

stock mufflers,pipes between headers and 'x' pipe have kinks.

add windage tray,longtubes, real drag exhaust, proper tune, tapered runner intake, electric wter pump, etc.

cams are limiting HP. they are locked in full advance. retarding them 1 tooth or 8.5 degrees = 10-20 hp.

the numbers are only 10 hp and 5 tq from expected.
i may retard the cams 1 tooth and return to dyno with no other changes.

there is a lot of hp and TQ there without anything but bolt ons.

the first dyno run was2nd gear and 211hp and 275tq. the second was the same.

3rd run was 70 mph start and 3rd gear. 220hp and 340tq A/F 11:1. i adjusted the fuel pressure 6 psi down to lean it. 4th run A/F 13:1 flat until 4000 then it went progressively rich. 10 or more HP lost there for sure.


hp was flat from 4150 to 4350 peak.

baseline runs. i am pleased with what is left in it.

 

BTW the inlet 90 degree elbow is also hurting power. as is 80mm MAF.

by changing to 85mm 92 mustang gt throttle body and lightning MAF i expect more gains.

this is finally my start. it took me a year to sort out the tuning issues using this 96 PCM close enough to get a good run.

 

Was this on a F150 5.4L 3V?

 

yes my motor is a 2005 f-150 5.4 3v without VCT. if i had vct hooked up add 10-20 rwhp. i fabricate a lot of parts, trying to unlock the real potential of this. i am fully confident i will exceed 300 rwhp without cams.

 

good luck on that 300 RWHP... I'm still looking for that 20hp to get there.

 

i am going to simply shift the torque a few thousand higher and that will do it.

without losing any low end. i may even gain 10 ft-lb low end.

i have in my posession a set of stepper headers.

steppers have multiple torque peaks and still get all of the top end power of a goos set of 1 3/4".

torque peaks are 3200-3800 and 4200-4600 for these headers. then they top out a 5500 for hp. steppers are a road racing requirement. but i think they will work wonders for keeping all of that low end.

shift that 340 rwtq to 4500 and the 300 is there.

 

delete your cmc plates and you wil get closer. add ~7hp. i'm telling you.

look at my torque. i lost nothing deleting them. my combo is not far from stock.

 

well i have the first half of the equation to beat an LS all motor.

li fully intend to keep all of that low end and add the hp also.
if you look at the curve and how low an rom the motor quit pulling, it's a no brainer to get the hp up.




this is the final mod list. all of the other crap i have made has led to a definite direction finally.


filter,'x' pipe,pullies. those are the only real performance parts on it at the time of the dyno. my intake system is smaller and more restrictive than a stock 5.4 3v.


i will not give up any torque down low for a single hp.

it has MORE torque than a 5.7l LS, hp is next.
VCT, lt steppers, custom upper with 85mm 92 mustang throttle body,open exhaust, proper tune, biggest comp cams