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Forum: Modular V10 (6.8l) 10-24-2014, 08:10 AM
Replies: 10
Views: 929
Posted By SLE
First, if your not seeing anything more than...

First, if your not seeing anything more than 3,500 rpms, you have issues. The 6.8L should freely rev into the 5k rpm range without any issue. Second, don't rev any engine hard in idle, without a load...
Forum: Modular V10 (6.8l) 04-17-2014, 10:48 AM
Replies: 13
Views: 2,320
Posted By SLE
To start have an 03' F250 Crew Cab Short Box F250...

To start have an 03' F250 Crew Cab Short Box F250 V10. It's a dedicated tow and hunting vehicle and currently has 71k miles on the ticker. It's also my baby even though my daily driver is an 11' F150...
Forum: Modular V10 (6.8l) 01-28-2014, 07:45 AM
Replies: 6
Views: 701
Posted By SLE
are you sure it runs fine? could it be a broken...

are you sure it runs fine? could it be a broken valve spring?
Forum: Modular V10 (6.8l) 01-23-2014, 11:37 AM
Replies: 61
Views: 3,947
Posted By SLE
Yeh, if your running the stock 265 tires, my...

Yeh, if your running the stock 265 tires, my 4.56s put me just barely a tick deeper gearing wise since I'm running 285s so they should perform close to the same. This is the primary reason I think...
Forum: Modular V10 (6.8l) 01-23-2014, 12:05 AM
Replies: 61
Views: 3,947
Posted By SLE
4.30, 4.56, or 4.88 depending on trailer size,...

4.30, 4.56, or 4.88 depending on trailer size, highway speed you like to tow at, RPMs your comfortable turning, and so forth. 4.56 & 4.88s will turn fine at highway speeds of 60 to 70 mph in both 3rd...
Forum: Modular V10 (6.8l) 01-21-2014, 11:04 AM
Replies: 61
Views: 3,947
Posted By SLE
Day to day driving feels slow and technically...

Day to day driving feels slow and technically will be unless you turn more RPMs accelerating. You won't notice an increase in performance unless your foot is well into the go pedal or you've got a...
Forum: Modular V10 (6.8l) 01-21-2014, 07:41 AM
Replies: 61
Views: 3,947
Posted By SLE
I noticed a very small drop in fuel mileage,...

I noticed a very small drop in fuel mileage, maybe 1 mpg. This comes from a person that has tracked every drop of gas, and every item of maintenance in a log book. My log book has the date, the...
Forum: Modular V10 (6.8l) 01-20-2014, 10:35 PM
Replies: 61
Views: 3,947
Posted By SLE
One Last thing, based on my usage I believe 4.88s...

One Last thing, based on my usage I believe 4.88s would be too deep without more transmission gears or larger tires. Just an observation from someone that has 4.56s and had a detailed spread sheet...
Forum: Modular V10 (6.8l) 01-20-2014, 10:29 PM
Replies: 61
Views: 3,947
Posted By SLE
Also, do both ends or don't do it. It only takes...

Also, do both ends or don't do it. It only takes one person to flip the switch and f things up. Also, 4low is your friend when maneuvering in tight places like a camp ground. I learned the hard way...
Forum: Modular V10 (6.8l) 01-20-2014, 10:23 PM
Replies: 61
Views: 3,947
Posted By SLE
I'm running an 03' with 285/75/16s, a modified...

I'm running an 03' with 285/75/16s, a modified y-pipe, a five star tune, a rebuilt heavy duty trans and 4.56 gears. WE3ZSs rpm calls are accurate, I run 2200-2300 at 70 mph ish, far from screaming. I...
Forum: Modular V10 (6.8l) 07-19-2013, 11:44 AM
Replies: 46
Views: 6,427
Posted By SLE
Not criticizing at all but if you insist that...

Not criticizing at all but if you insist that fine; just saying that I've owned this truck for basically 10-years and I've been there, done that, bought the Tee shirt, and had it tattooed on my @$$....
Forum: Modular V10 (6.8l) 07-19-2013, 08:05 AM
Replies: 38
Views: 4,175
Posted By SLE
Not as bad as one might think, well maybe at 80...

Not as bad as one might think, well maybe at 80 on the freeway however I can't say mine has had to do that duty, that's what the wifes enclave or the Ecoboost is for! emty mpg @ 65-70 is right at 14...
Forum: Modular V10 (6.8l) 07-19-2013, 08:02 AM
Replies: 46
Views: 6,427
Posted By SLE
I'm sorry but I have a tough time buying the OPs...

I'm sorry but I have a tough time buying the OPs story about it towing a 14k lb fifth wheel just fine with a V10 @ 275k miles and 4R100 sending the power out back to a set of 3.73s. You my friend...
Forum: Modular V10 (6.8l) 07-16-2013, 10:15 AM
Replies: 38
Views: 4,175
Posted By SLE
If you can swing it, get the gears!

If you can swing it, get the gears!
Forum: Modular V10 (6.8l) 07-16-2013, 06:40 AM
Replies: 38
Views: 4,175
Posted By SLE
Sounds like your due for a set of 4.56s, some...

Sounds like your due for a set of 4.56s, some long tube headers & exhaust, a cold air intake, a whipple super charger, and a day or two dyno tuning!
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