Morning everyone.

I am seriously considering buying an 08 f250 crew cab with the 5.4 triton. The truck has 60k miles and is really clean. I attached pics of the door sticker and Vin, I was wondering if anyone had a way to pull up some info on the truck with the info.

It has a slight rod knock and the dealer is working with me and will replace the engine and still keep it well below book value, or I can buy as is and drive it for a while and or put a new motor in right away for the heck of it.

I will be paying cash for the truck and want it to be as reliable as I can make it, since it will be a family rig for us as well. I can no longer drive my wife's escape with the kiddos in the back seat, not enough room lol.

Now my question is which engine?

I would like to either stuff a 6.2 in for the heck of it lol.

Put in a new 5.4 and try and build it up a little if I can. Maybe even supercharge it.

Or a 6.0?

What do you guys think would be best? Thanks for your time

 

I would never purchase a truck with a knocking motor, period. They would have to replace the entire motor before I would even consider the purchase, and the replacement motor would be an OEM replacement motor with 0 miles.


6.0 requires a different tranny so that's an extra expense I wouldn't want.


6.2 would be awesome, just make sure the transmission bolt pattern and the engine mounts for the engine are the same or interchangeable.


To be honest, I would steer clear. If the engine is blown after 60k miles, the truck probably had a pretty hard life, was improperly maintained, or possibly flood damaged resulting in a hydrolock.

 

Like I said, a slight knock. And I will be putting a brand new motor in. Just trying to figure out what motor.

It can't be flood damage since we do not have floods up here. The motor in my dads 2000 expedition makes the same noise and has done for 100k miles. The truck is really clean of course that doesn't mean it hasn't been driven hard.

And everything else about the truck is solid. Like I said I will have a brand new motor in it, just trying to figure out which motor.

 

There is no such thing as a "slight knock".

Engines don't really swap like they used to. Going from a 5.4, you might be able to get a 6.8 in without much trouble, but anything else will involve all different electronics.

 

Yeah I realize that.

I do like the 5.4 but am not having much luck navigating sites as to a brand new engine for it. Guess I may have to wait until I can get to a computer.

 

personally I would pass unless it was part of a donor/pateint pair plan. super nice body with blown engine on one hand and rust bucket with minty engine on the other hand.

 

When first reading your post I though you are a newbie that was going to learn the hard way on a truck that needs fixing but after rereading it and looking at your stats you're obviously looking for a truck to build.
My vote goes for a V10 swap (I might be slightly biased), I very much doubt the 6.2 will bolt to the current transmission or be happy with the five-speed auto. Again with the transmission on the 6.0 it will need to be upgraded also but you'd have a diesel. If time and budget are big enough the sky is the limit on the engine swaps! The cheapest swap would probably be the V10 or a boosted 5.4.

 

Build Date: 19.03.2008
Vehicle Line: F250/350/450/550 Super Duty
Body Style: Double Cab (3/4 Door)
Version: 250 Series
Engine: 5.4L 3V V8
Transmission: 5R110W 5 Speed Auto Trans NAAO
Drive: LHD 4WD (PTD)
Axle Ratio: 3.73
Emission: With 49 State/Non Green State Req
Air Conditioning: Manual Air Conditioning
Paint: Oxford White

Minor Features
Medium Stone Interior
Zinc Cloth
Blocker Beam-Underbody Front End
Less Front Fenders
Tailgate - With Flexible Step
With Tailgate Lock
With 6 3/4' Styleside Steel Box
4 Cargo Tie Down Hooks - Inside
With Load Box Edge Protectors
Less Pickup Box Extender
With Base Payload Package
156"/3962MM Wheelbase
(-)"XL"
(-) Version Packages
Kentucky Truck Plant Build
Less Security Lock Group
Less Special Equipment Package
9400 LB. GVW
Less Appearance Group
Less Exterior Appearance Pack
Less Power Equipment Group
Less Memory Package
Feature Content Group 1
Kentucky Truck Plant Build Only
With English Language Label
Owner Hand Book Pack
With 2 Ton Mechanical Jack
With Manual Front Windows
With Manual Rear Windows
With Tinted Glass
With Fixed Rear Window
Less Overhead Console
Less Floor Mounted Console
Fixed Foot Pedals
Less Front Floor Mats
Floor Cover - Vinyl Ins - Complete
I/P Insert - Level 1
Sunvisor - Single Driver W/Strap
With Sunvisor Mirror - Passenger
With Level 1 Door Trim Panel
With Grey Grille
Less Exterior Wheel Lip Moulding
Less Lower Body Moulding
Less Side Auxiliary Step
With Dipping Rear View Mirror
Dual Sail Mtd Hand Set Mirrors
With Black Exterior Mirror
Less Temp Control Driver Seat
Less Temp Control Passengers Seat
With 2nd Row Bench Seat - 3 Passngr
With Driver 2 Way Mnl. Seat Adjust
With Pass 2 Way Manual Seat Adjust
Trailer Tow Prep Pack
Trailer Tow - Class III Receiver
With Front Towing Hook
Exterior Door Handle - Black
Double Cab (3/4 Door)
With Manual Door Locking
Less Door Entry Remote Control Unit
Less Keyless Entry System
Less Sun Roof
Less Tu-Tone Accent Colour
Less Body Tu-Tone Paint
Front Bumper Steel - Painted - Std
Rear Bumper - Steel Step - Painted
Less Front License Plate Bracket
With Driver Air Bag
With Passenger Air Bag
Adjustable'D'Ring-Drivers Seat Belt
Less Passenger Air Bag Deactivation
With Adjustable 'D' Ring Pass Seat
With Frame Mounted Tyre Carrier
With Conventional Spare Wheel
Std Duty Dual Front Shock Absober
With Standard Rear Shock Absorbers
With Single Rear Wheels
7.5 X 17" Steel Wheel
LT245/75/R17E A/S BSW
With Black Wheel Hub Cover
Less Engine Idle Shutdown Timer
Less Immersion Heater
With 49 State/Non Green State Req
With Monobeam Suspension - Narrow
Less Stabilizer Package
Less Attitude/Ride Height Pack
With Standard Duty Front Suspension
With Front Stabilizer Bar
Less Rear Auxiliary Springs
Less Rear Stabilizer Bar
Less Rear Axle Package
3.73
Rear Axle Limited Slip Differential
5.4L 3V V8
With Catalyst
Less Exhaust Pipe Extension
Power 4-Wheel Disc Vacuum Boost
Less Brake Control Valve
4 Wheel Anti-Lock Braking System
Less Engine Traction Assist
Normal Fuel Fill
Less Fuel Kit - FIA
Less Transmission Power Take Off
Electric Trans Case And Auto Hubs
Less Skid Plates
With Mid-Ship Fuel Tank
Non Locking Fuel Cap With BP Label
For Unleaded Fuel
Less Diesel Fuel Content
With Steering Damper
With Fixed Steering Column
Basic Type Steering Wheel
Less Speed Control
Less Auxiliary Heater
With MPH/KMH Speedometer
Tyre Inflation Monitor
Instrumentation Pack
Less Reverse Proximity Sensor
With Safeguard Anti-Theft Sys(Pats)
Standard Duty Battery
Heavy Duty Alternator
Electronic AM/FM/Stereo With Clock
With NAAO Radio Frequency
Less A/V Jack
Analogue Audio Broadcast
Less Family Entertainment System
Less Camera
Less Homelink
Less Daytime Running Lamps
With Single Headlamp
Less Front Fog Lamps
Less Roof Marker/Clearance Light
Less Engine Compartment Light
Tail lamps - Level 1
With High Mounted Stop Lamp
With Conventional Headlamp Control
Less Spare Accessory Switches
Oxford White
Generic Country Group 1
250 Series
Left Front F81A-5310-ADD (4400 LB.)
Right Front F81A-5310-ADD (4400 LB)
Less B&A Control Codes Issue 030388
Less B & A Control Codes (9270)
Decal - 4X4 SRW Dark Shadow Grey
5R110W 5 Speed Auto Trans NAAO
F250/350/450/550 Super Duty
(+)"USA"
(-)"N"
(-) GVMT Service Administration
(-)"CDN"
(-)"AUS"
(-)"GU"
(-)"BRN"
(-)"BZ"
(-)"ATG"
(-)"CHN"
(-)"AW"
With Cloth Bench Seat
Less Fleet

 

I thought i remember mark saying the internals are different in the trans for the 5.4 to 6.8. Seems something was built stronger for the v10 and diesels that is a weaker component that he suggested a 5.4 trans wouldn't live very long behind the v10.

 

You are correct. Mark did mention that, but i think it was in reference to 4r100's, Not sure if the internals of a 5r110W are different from Gas to diesel.

Gas 4r100's only have 4 pinion planetaries, V10 and Diesel have 6 pinion planetaries. the OD in a diesel is only 4, but in a 5.4 gas version, it is only a 3..

 

I'd look for a different truck. You mention "building up the 5.4", there's not much more HP available there, it already is pretty much maxed for low end torque with 385 ft/lbs stock and it already has a high flow intake and 3" exhaust.

I'd drop in a 3v 6.8 V10. From my research it should fit with minimal issues, such as cutting the fan shroud shorter. I'm not sure if the computer needs to be swapped, or if 5 star tuning could load a V10 tune on a V8 computer.

Much easier to find a 2011 with a 6.2 or a 2005+ with a 3v V10 already in it.

 

Thanks for the advice guys I appreciate it. I am just not sure if I can pass up the price yet or not. Later today I am taking it to a shoo I trust and they are going to run tests on it to see what's actually wrong..

I spoke with the lot owner again yesterday and he said his tech said the problem is the can phaser? I am new to the modular engines/new trucks lol. Never bought one above a 94.

On of the reasons I like this truck so much is because it is fairly basic, like my 94 and I love the xl package.

What is the can phaser problem? I cannot search the site from my phone for some reason it won't let me.

 

Lots of things can make a 5.4 tap or tick. Mine is in the shop today for that. Phasers wear and make noise. I used a stethoscope on my engine and the valve covers up front were quiet- so mine isn't a phaser issue.

Make them fix it before you buy it. Phasers are only a couple hundred bucks- sounds like they're not going to replace the engine. You could get stuck with that yourself. I'd only buy it after they fix the tapping noise.

 

They will fix the noise/replace the engine if need be. Or I can buy it for even cheaper and take it to a shop of my choosing. Any route I go the truck will still be way under book value

 

The 6.2 will not bolt up the the 5R110W. Different bell housing.
Which ever truck you pull the donner out of get the ECM,TCM and wire harnesses too IF its other than a 5.4/Torque Shift combo your bolting in.
As a rule the gas and diesel transmissions are slightly different internally within the same model range. eg; A 5R110W for the gasser is different internally from the 5R110W intended for a diesel. Yes it will physically bolt up but the diesel trans is heaver duty. The torque input of a diesel is greater than a gasser. So a gas trans behind a diesel wont last long. Now you can go the other way...a diesel trans into a gasser. Mark will correct me if Im wrong on this.
Your path of least resistance is to rebuild of replace the 5.4.