I think this is a realistic goal with the 4.0 sohc, so who is there, close, or over? Let me know and list your mods, transmission, etc.

Let's see what comes of this thread...

 

i would say D. and NickSVT are....and that new guy who is doing all the testing with his '06 4.0......

i wish i could get close with my OHV 4.0......

 

well isnt the 4.0 givin like 190 rhwp id say thats close..you get a tuner you get closer to the 200 mark i think..

 

i believe that in stock form, the SOHC is producing somewere around 180-190 rwhp....at the flywheel it is making around 205 hp i think...i may be a bit off.....

the 4.0 OHV makes 160 hp at the flywheel stock so i am behind from the get go!

 

But isn't the OHV a little more torquey?

 

^^i think so...

 

^^^ Slightly less torque over all, but the OHV gathers it all down low, personally I like that better.

 

I haven't measured RWHP. But, I'm up 23hp as measured with autotap given these mods:

K&N intake kit
underdrive pulley (crank only)
e-fan


Rich

 

Yea. I think that a CAI or modified air box+tuner+UDP shoud get you there or over. With exhaust it should be easy. Just wondering where everyone is.

 

I was thinking about unhooking my exhaust right after the last cat and doing a data log. At least it won't cost me anything and would be interesting for me & the R-F to find out.

Rich

 

^ That would be cool..

 

I have an after cat now, but would like to try a true dual set-up some day with no cats. I need to have the programmer allow for disabling the rear o2 though.

A nice 2.25" true dual system would make headers worth trying IMHO.

 

I would hope I'm close with intake, exhaust, SCT programmer, electric fan & power pulley.

Rick

 

word!!! minus teh e-fan and pulley for me though...

 

I would guess those 2 alone pushed me over the top & showed the most gain on my mileage.

Rick

 

D is like 240hp at the rear wheels.... all i know is his truck hauls some major *** when he steps on it.....

 

My truck with JBA headers, Gibson catback, K&N FIPK and a tune written for max torque dyno'd 171rwhp and 210rwtq. With the same bolt-ons and a M90, 30# injectors, BBK 155lph fuel pump and Mustang GT MAF I dyno'd 204rwhp and 245rwtq. I'm having some high end fuel pressure issues though, so my horsepower should be higher.

 

What is the 'rw' in rwhp or 'w' in whp?

From a spec. sheet I've seen the 4.0 has 207hp. This may not help as I am not really sure what ya'll are talkin about.

 

rear wheel horse power...the power your truck/car makes after you factor in the lose from the driveshaft...

 

The horsepower and torque listed by dealers is the flywheel horsepower and torque. The horsepower you get tested on a dyno is rear wheel horsepower, rwhp, and rear wheel torque, rwtq. These numbers are always lower since you lose power as it travels through the driveshaft and gears to the wheels.

 

you have any pictures of your truck and engine compartment Paul Sill? i am interested to see how you have it set up......

 

I do. I just became a site contributor. How long until I can upload pics here?

 

you can host them somewere else like www.photobucket.com .....and then copy the link and paste it in a post......or it usually takes a few hours to get your privilages up.....

 

I have some on FTW, let's try them...



These are more for the intake but you can get a general idea. These pics are from a few months ago, but it's not much different looking. Any other M90 wearing 4.0's here?

 

not anymore i dont think...........i would really love to have one on my 4.0 but i dont have the fab skill needed nor the moola to do it right now!