6.4 vs 6.7 with same mods? - Ford Powerstroke Diesel Forum
6.4L Performance Parts Discussion What has or has not worked for you?

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post #1 of 13 Old 10-10-2013, 08:05 PM Thread Starter
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6.4 vs 6.7 with same mods?

I know stock for stock the 6.7 makes more power. But I know the 6.4 takes to tuning very effectively. If both have the same simply mods; same intake, tuner and dpf delete exhaust which would come out with the most power? I know mine pulls like a train but haven't rode in a tuned 6.7. Also which would be faster? Don't need to get ride of my truck for a LONG time but don't mind doing homework for the future


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08 F350 crew 4x4
H&S mini, Sinister egr delete, cold side pipe, 5" straight pipe, S&B intake, 3.5" level, Newton bars, coolant filter, 325's duratracs, ARP studs, 6.0 manifolds, flow pro DP, Detroit truetrac, triple disk converter, led bed lights

79 F350 4x4 460ci
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post #2 of 13 Old 10-10-2013, 08:14 PM
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Well you have 6.7s that sometimes might hit 13.9 in the quarter and you have 6.4s running 12.8-13.0 consistently so you make your judgment

2010 CC/SB FX4 Lariat.. Tuned By Eric@IDP and Matt@Gearhead

Thinking about getting rid of the stock 6.7 turbo?
Check this out... and research before buying




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post #3 of 13 Old 10-11-2013, 07:17 AM
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^^ yup. 6.4 all day long!

08 F350 cc/sb 4X4
h&s minimaxx, 5" flo pro, 4" down pipe, no limit cold air intake, dirty diesel EGR delete with intake elbow, 6.0 exhaust manifolds, custom up pipes, ported intake manifold, Apex 71mm LP turbo, Rudy's cold side pipe, diesel site coolant and transmission filter, diesel site intercooler boots, ccv mod, bilstein shocks, gogo dd solenoid, HID lights, Airdog II 165, PMF traction bars, PMF drag link, moshimoto aluminum radiator
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post #4 of 13 Old 10-11-2013, 10:00 AM
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Courtesy of H&S.

6.4L


6.7L

2015 F350 DRW Platinum, SCT X4, EDGE CTS2, aFe PDS, AirLift 5000 Ultimate & Wireless Air, Lund LED Bull Bar, RC Grille bar, B&W 5th Wheel, Stark LED Lighting
2010 F250, H&S Mini Maxx, aFe PDS, Diamond Eye 4", Pro Comp Nitro 2.5", Bilstein 5100, SmittyBilt Bull Bar, Bushwacker Pocket Style, B&W Slider, Firestone Ride-Rite, Fuel Hostage 20x10, Pioneer/Kicker/JL Audio





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post #5 of 13 Old 10-11-2013, 10:30 AM
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No comparison, almost a 100 HP / 300 Trq difference.


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GO NAVY


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post #6 of 13 Old 10-11-2013, 08:59 PM Thread Starter
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And no complaints here


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08 F350 crew 4x4
H&S mini, Sinister egr delete, cold side pipe, 5" straight pipe, S&B intake, 3.5" level, Newton bars, coolant filter, 325's duratracs, ARP studs, 6.0 manifolds, flow pro DP, Detroit truetrac, triple disk converter, led bed lights

79 F350 4x4 460ci
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post #7 of 13 Old 10-13-2013, 05:25 AM
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Finally ran into one last weekend on the road tuned up with H&S.
Tell ya what, that 6.7 ran very well.. I was surprised.
He turned out behind me coming out of a parking lot around midnight, noticed his HID's.
Before I even looked again he was to the floor and attempting to come around me so I hammered it.
By the time I got on it he was already next to me, and began to pull on me. I was probably doing 35 or so when I put it the floor.
By the time I really got going his front end had just started pulling ahead..
Took me a quick second but I gained that quickly and began to pull instantly in overdrive too. He let off as soon as I started waving and pulling ahead.. Right around 70mph.
I don't think he would of even got ahead if my trans could ever make its mind up.
Still his truck ran very well and from a stop I definitely think we would have them.
Just thought I'd share and my experience.

Nic - 2008 6.4L F-250 Lariat CrewCab 4x4
S&B Cold Air Intake, Spartan Tuned, DPF/CAT Delete, MBRP CAC Pipe.
WeatherTech Floor-Mats, Westin BedRails, Tinted Windows & Windshield, Weather Tech In-Channel Rain Visors, DDM 55W 8000K HID High's/Low's, DDM 35W 6000K HID Fogs, Smoked LED Recon Cab & Mirror Lights, LED Interior & Reverse & Third Brake Lights, 4" Lift, 22's on 35's, Top Gun Customz Traction Bars.
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post #8 of 13 Old 10-13-2013, 06:11 PM
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A 6.4 will smoke a 6.7 in modded form. Stock is another story, the 6.7 is quicker stock.

2010 Ford F-250 Super Duty, Lariet 4x4, Crew Cab Short Bed, loaded with every option...and more
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post #9 of 13 Old 10-14-2013, 05:38 PM
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Quote:
Originally Posted by blk450er View Post
And no complaints here
I'm just here to say that I love the stance of your truck. Eye candy while I dream of moddin my 350.
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post #10 of 13 Old 10-14-2013, 05:46 PM
Don't you worry about it


 
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Quote:
Originally Posted by thedudebrah View Post
I'm just here to say that I love the stance of your truck. Eye candy while I dream of moddin my 350.
I second that, its a beautiful truck!


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2014 Platipus
AP Intake
Spartan EZLYNK
4" Dual Exhaust
4" BDS with Fox shocks and PMF stage 2 traction blocks
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