Been a while since my last post. My trailer went frim 26 ft @ 5700 lbs to 32 @ 9200 lbs. Pulled the 3:73's and put the oem ford 4:30s in front and rear. This is a 2012 F250 4wd with 111,000 miles on it. Pulls great but has a little trouble on the big moutain passes. When the 91 oct performance tune is in she breaks both wheels loose and gets a second gear scratch. Those 4:30s are worth ever penny and mileage went from 12.8 to 13.3 when setting cruise to 70 mph om the highway. Those are the facts and real numbers.

Having raced 5.0 mustangs from 1991 to 1997 I've done my share of garage hacks to computer controlled fords. Mine ran 12.62 at 105mph on stock heads with a good list of fuel, cam intake and exhaust work. The heads were flowed on a bench with a 3 angle valve job.

I've priced diesels and I owned a couple 7.3's back in 99 and 01. Right now a decent 6.7 goes for 45 to 55 grand to replace my current 4x4 FX4 crew cab. I owe 13000 on my gaser. The difference is 30 or more grand. I only need about 30 more ft lbs of torque. I only drag that big trailer a long dist once a year. Why the heck has no one put a larger throttle body and a long tube header system on one of these 6.2 trucks? I dont buy the cat back pressure story. In drag racing we solved the back pressure issue by drawing a chaulk line on the pipe just past the down tubes and adding a cross over pipe between the left and right bank where the chalk line burns brown. That reveals the hot spot where the gas will equalize the system. Has no one tested that yet? I'm looking for some expert opinions on this. My calculations put that setup at about 3 grand with a dyno. A super charger is 11 grand. Together that's still 17 grand less than a diesel and I dont have to worry about the fuel system killing fuel pumps ford is putting in their diesels.

Sorry for long post. I wanted to avoid questions going back and forth on how I got to where I am with my truck. 😊

 

in my readings this past 4 years.. there is little to gain .. after gears and a Good Tune..

unless big money is spent.. like aftermarket heads.. as the Ford heads are the limiting factor..
I have no connection with this company
https://www.livernoismotorsports.com/cylinder-heads

or supercharging. to force feed the heads.

best of luck with your on-going research

it would have been nice if Ford had carried over the 3 valve heads from the V10...

 

I honestly don't know why they aren't producing a turbo kit for these engines. In all honesty the diesels aren't really much without their turbos. Ive got an engineer buddy that builds turbos for Nissan 300's, 350'd and now the 370's. Its crazy the dyno numbers he's getting out of a turbo 6 cylinder. Im sure there are some fab shops that can put a single turbo on for less then 6 or 7 grand and have stupid torque numbers. If I wasn't running an old 99 v10 I would definitely be looking at a turbo build and i know the price would be cheaper then a diesel and way less expensive to work on then a diesel. I dont mean to be hating on the diesels Ive had a couple and they were great trucks. Its just gotten ridiculous the cost and maintenance of them. Lots of fleet trucks are going away from them because of the cost.

 

Put some really deep gears in then you'll have more torque and maybe 14 mpg.

 

.
there was a company that made turbo's that mounted behind the rear axle.. so a truck was a must... plumbing issues..

 

If you only tow long distance once a year, be happy with what you have. A slow climb up a pass isn't the end of the world.

 

I have to agree completely. I totally get the want more's but your absolutely right. reliable and dependable is the key...

 

Thats what keeps me in mine too

 

I put 4.88 gears in mine. I haven't towed yet, still breaking them in. So far I love them. I used to barely get 11mpg around town. Now getting over 12. On the drive home from getting them done I got almost 14 on the highway at 2100 rpm and 65 mph. Before the swap I'd get around 15mpg highway. I set the cruise control and let the truck do the rest. Per the inclinometer I was traveling up 3 degree inclines and the truck never downshifted. At 70 mph it turns over around 2300 rpm. I have the optioned 33s on 18 inch wheels so my effective gearing is around 4.66.

I now have an "effective" 25%-30% increase in torque over the 405ft/lb stock with 3.73.

 

Thanks for all the quick replies. Looks like its settle for where I'm at or go into uncharted waters.

 

 

It blew up. Information after that was sparse.

 

Never say never... check out Stainless Works for long tubes and a full exhaust. https://stainlessworks.net/ford-f250-f350-2011-18

 

Thanks, I'm checking it out now.