5/14/2026 Update - Bronco Raptor Megazilla Godzilla 7.3L V8 Conversion

[BigMeatsBronco]

If your tires are not leaving the ground at high speeds (jumps or whoops) then you'll be just fine with the suspension! My Braptor was fine with street / highway / rock crawling /trails at moderate speed with the Godzilla and running 40's. It's the high speed whoops and jumps where the extra weight and front-to-rear ratio needs suspension tuning.



I think it's going to be more about "what did Ford not really document on the Ranger Raptor that every other human assumes would be the same as the Braptor but is not."

The transfer case is definitely different in the Ranger compared to the Braptor. In doing a bit of AI-assisted research, I learned that the Ranger Raptor has intentionally mismatched front (4.70) and rear gearing (3.73) which is managed through the Ranger Raptor's transfer case's wet clutch pack.

Here are some call-outs for the transfer case specifically:

The Ranger Raptor's ~26% front/rear speed difference is normally absorbed by the ITM transfer case’s wet clutch pack slipping intelligently in 4A mode. The factory PCM/AWD module knows the exact mismatch and modulates clutch pressure accordingly.

• Programming requirement: The replacement PCM (or control pack) must be flashed/calibrated to understand the split ratios so the AWD module still allows controlled slip in 4A without triggering binding codes or limp mode.
• In 4H/4L (locked modes), the system expects loose-surface tire slip to relieve wind-up — same as stock.
• If you keep the stock Ranger Raptor transfer case (recommended for full 4A functionality and shift-by-wire), the AWD module may need to stay or be reprogrammed to work with the new PCM.
• Unique Raptor Callout: No other common Ford platform has this split-ratio + clutch-based ITM setup in a midsize truck. Donor PCMs assume identical front/rear ratios, so custom calibration is mandatory or 4A mode (daily on-road AWD) will not work properly.

Here's the rest of the considerations from the AI summary - it's the Programming implications that are often the most time-consuming because it's a lot of trial and error:


1. Rear Suspension Geometry (Watts Linkage vs. Panhard Rod)

• Ranger Raptor: Coil-sprung solid rear axle with a Watts linkage (instead of a simple track bar). This keeps the axle perfectly centered throughout the full range of travel with zero side-to-side arc.
• Bronco Raptor: Coil-sprung solid rear axle with a traditional Panhard rod.

Why this matters for the swap:

• The Godzilla is significantly heavier and torquier than the stock 3.0L V6. The Watts linkage's geometry assumes certain roll-center behavior and lateral stiffness tuned for the lighter EcoBoost. Adding V8 weight changes ride height, spring rates, and axle movement under power — potentially introducing bind or unpredictable handling in Baja/Rock modes.
• Mechanical provisions needed: Custom rear driveline angles (driveshaft length, U-joint phasing, and slip-yoke travel) will differ from Bronco swaps. You may need adjustable Watts-link arms or reinforced bushings to maintain proper pinion angle under the extra torque/weight. Shock towers and coil-over mounting points are also Ranger-specific.
• Programming implications: The PCM, ABS/ESC module, and G.O.A.T. drive-mode calibrations are tuned for Watts-link dynamics (sharper high-speed desert behavior). A donor PCM (or custom tune) must be flashed with Ranger-specific suspension parameters, or you'll get incorrect stability control intervention, crawl-control behavior, or fault codes.

2. Wheelbase, Frame, and Driveshaft Packaging

• Ranger Raptor: Longer wheelbase (~128.7" / 3270 mm) + pickup bed layout.
• Bronco Raptor: Shorter wheelbase (~116.5" / 2959 mm) + SUV body.

Why this matters:

• Longer rear driveshaft on the Ranger changes critical speed, angle, and vibration characteristics once the heavier Godzilla + 10R80 combo is installed.
• The bed and different firewall/cowl mean exhaust routing, fuel lines, and rear crossmember placement differ from the Bronco's more open SUV layout.

Mechanical provisions needed:

• Custom-length rear driveshaft (or modified carrier bearing) — not a direct carry-over from Bronco builds.
• Engine mounts and transmission crossmember almost certainly require Ranger-specific fab or modification (frame rail spacing/height is similar but not identical due to the truck body).
• Exhaust: Easier clearance under the bed, but you'll need unique routing to clear the longer frame and leaf/coil setup without hitting the bed floor.

Programming: Minor, but the PCM must be calibrated for the longer wheelbase's speed/acceleration parameters and different weight distribution (truck vs. SUV) to keep accurate speedo, shift logic, and traction control.


3. Rear Axle Strength and Track Width

• Ranger Raptor: Smaller Dana AdvanTEK M220 rear axle (semi-floating, narrower track).
• Bronco Raptor: Larger M235 / Dana 50-class rear axle (thicker tubes, double-row bearings, wider track).

Why this matters:

• The Godzilla's massive low-end torque (especially with 37"+ tires) stresses the smaller M220 more than the Bronco's axle sees in factory form.

Mechanical provisions needed:

• Stronger axle shafts, upgraded differential cover, or aftermarket girdle recommended sooner on the Ranger. No direct Bronco parts swap here.
• Narrower overall track width means different fender clearance and steering geometry considerations when the heavier engine shifts weight forward.

Programming: None directly, but torque-vectoring and locker engagement logic in the AWD module is calibrated differently for the narrower stance.


4. Transfer Case and Shifter Integration

• Both use very similar Interactive Torque Management (ITM) 2-speed transfer cases with wet-clutch 4A mode, but early Bronco Raptors sometimes require a full transfer-case swap in Godzilla builds to match the Ranger-style unit for better shifter compatibility
• Ranger Raptor uses an electronic shift-by-wire shifter that some Bronco builders actually borrow for cleaner integration

Implications for Ranger swap:

• You can usually keep the stock Ranger transfer case (big plus), but the PCM flash must explicitly support the ITM clutch slip calibration alongside the split ratios.
• Shifter and G.O.A.T. mode selector are native to the Ranger — fewer adaptations needed here than on Bronco swaps.

5. Other Minor but Unique Programming/Integration Points

• Body Control Module (BCM) and truck-specific features: Tailgate, bed lighting, and payload/towing calibrations are Ranger-only. The new PCM must be VIN-synced and flashed with Ranger truck parameters or you'll lose functions or get warnings.
• Stability and drive-mode tuning: G.O.A.T. modes (especially Baja and Rock Crawl) are calibrated for the Ranger's narrower, Watts-tuned dynamics and higher payload focus. Bronco tunes won't transfer directly.
• Cooling and ancillaries: Different radiator package and hood clearance in the truck body may require custom AC lines, power-steering routing, or radiator support mods (Godzilla runs hotter under load than the turbo V6).

Bottom line: The Ranger Raptor Godzilla swap is mechanically very doable (shared platform helps), but the combination of Watts linkage geometry + split ratios + longer wheelbase/pickup packaging makes it more involved than a Bronco Raptor conversion. Expect extra fab work on driveshafts/mounts/exhaust and multiple rounds of FORScan/FDRS custom flashing to keep full OEM functionality (lockers, 4A mode, drive modes, gauges). Shops that have already done Bronco Raptor swaps are the best starting point — they can adapt their harnesses and tunes for the Ranger-specific items.



All-in-all - it's totally doable. It will just take longer being the first to figure out the programming!

The Ranger Raptor does not have m220 rear axle...it gets a special banjo style with a drop out section, very similar to a ford 9".

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[BigMeatsBronco]

Sorry if this has already been answered, BUT........ Gas Mileage?

 

[CC1999]

LOL
If V8 swapping pretty much anything, I doubt fuel milage is ever going to be an issue.
The cost alone of the V8 swap would buy the fuel for life of that vehichle. LOL

Honestly.
I am not 100% sure fuel mileage won't improve or at least be pretty similar.
Not ever seen great fuel milage out of these 3.0L EBs.
14-18 as about the range I have been seeing out of these 3.0L

Considering I average around 15 mpg, and larger much heavier Super Duty trucks with the stock Godzilla average in the low teens, it will not shock me if milage is still about the same 15 mpg I get now.

Other than range being a slight concern since it only has a 21 gal tank.
Which I planning to solve by swapping that tank out for one of these 35 gal aftermarket tanks.
Which I am planning to do to one of my V6 Ranger Raptors as well.

Range Solution.
Ford Ranger Raptor (2023-2025) - 35 Gallon Replacement Fuel Tank | Long Range America

 

[Ducati1098]

As others have stated, the 10R80 you want for the torque in the Godzilla. Even if you could get a 10R60 adapter, the 10R60 is rated for a maximum input torque of ~443 lb-ft. The 10R80 is rated significantly higher at ~590 lb-ft. This is the biggest practical difference. The 10R60 is lighter (by about 29lbs) and physically smaller, with low-friction internal parts for better efficiency and fuel economy.

The Raptor engines (3.0L V6 in Ranger/Braptor) make ~430–440 lb-ft stock (and tuned examples push higher), so the 10R60 is already operating near its design limit. The Godzilla V8 makes 475–485 lb-ft of torque without modifications.

Those transmission ratings aren’t really accurate for most real world results though. They’re more so for continuous duty, like constant towing max loads.

With nothing other than upgraded clutches, 10R60s are known to hold over 650wtq perfectly fine. And even completely stock they hold 530-550wtq reliably.

But either way, I would agree the 10R80 is clearly the better option especially since it bolts right up.

 

[Tye]

My v8 supercharged defender 110 gets better gas mileage then my braptor. so i wouldnt jump to say v8 swap will be worse

 

[CarGuy]

My v8 supercharged defender 110 gets better gas mileage then my braptor. so i wouldnt jump to say v8 swap will be worse

My Mercedes GLE 63s AMG (dual-turbo v8) gets better mileage than my WildTrak (2.7L). Then again, the Bronco’s aerodynamics are horrible.

 

[CC1999]

My v8 supercharged defender 110 gets better gas mileage then my braptor. so i wouldnt jump to say v8 swap will be worse

Yea, absolutely true. My v8 Defender 90 was 30% more fuel efficient then my 2.7 2door Bronco.

 

[22broncoraptor]

The Ranger Raptor does not have m220 rear axle...it gets a special banjo style with a drop out section, very similar to a ford 9".

Thanks I went through and edited my post to correct this as it was picked up in error from the AI summary. I also corrected an AI summary error in which the LLM had not learned that Ford originally misprinted the Ranger Raptor axle ratios front and rear in the original Ford Ranger Raptor literature. It's now been fixed and just for posterity, here's the corrected frontend and rearend types and ratios:


Correct 2025+ US Ranger Raptor Specs

• Front axle (final drive): 4.27:1 (Dana Advantek M210 with electronic locker)
• Rear axle (final drive): 4.27:1 (8.9" ring gear with electronic locker)
• Transfer case: 2-speed with wet clutch for 4A mode + ~3.1:1 low range

 

[CC1999]

Thanks I went through and edited my post to correct this as it was picked up in error from the AI summary. I also corrected an AI summary error in which the LLM had not learned that Ford originally misprinted the Ranger Raptor axle ratios front and rear in the original Ford Ranger Raptor literature. It's now been fixed and just for posterity, here's the corrected frontend and rearend types and ratios:


Correct 2025+ US Ranger Raptor Specs

• Front axle (final drive): 4.27:1 (Dana Advantek M210 with electronic locker)
• Rear axle (final drive): 4.27:1 (8.9" ring gear with electronic locker)
• Transfer case: 2-speed with wet clutch for 4A mode + ~3.1:1 low range

Nice!
Thanks!

 

[22broncoraptor]

5/14/2026 Project Update (Now running the Megazilla 7.3L V8):
In January 2026 I had the suspension updated (detailed here) and took the Braptor out to Johnson Valley, CA for some shakedown runs for the suspension to eventually find out the 10R80 transmission imploded for reasons that are unclear. Suncoast was fantastic and repaired everything under warranty and as part of this I made several new changes:

• Changed from 3200 rpm stall to 2800 rpm stall billet torque converter
• An opportunity came up to buy a slightly used Megazilla 7.3L V8 engine so I did and pulled the existing 7.3L Godzilla to set aside for another project at a later date and am now running a Megazilla 7.3L V8 in the Braptor
• New headers were made to fit around the suspension shock towers, also header wrap was used to reduce engine bay temps
• New exhaust was installed using the Bronco Raptor Magnaflow exhaust system
• Since the original Godzilla conversion I had been using a F150 Coyote PCM which required a lot of custom coding to make the Braptor happy, I've now switched to a Raptor R PCM which reduces the amount of custom coding needed to get all GOAT modes
• As part of the suspension setup, this now has the Ultimate Dana 44 FDU and Ultimate Dana 60 rearend with 5.38 gears which adds new twists and turns to the tuning required

Here's video of the Megazilla after first startup with the new exhaust:



I've had it briefly in for tuning for driveability and shift points running on 91 octane but will be bringing it back as I was rushed for time to make it to the Raptors on the Rocks event for a full shakedown.

Will be getting it back for full tuning and further optimization early this summer. Currently, it is running great with fantastic temperature control across the engine and transmission. The Megazilla, as expected, pulls harder at higher speeds, whereas the Godzilla tended to run out of breath at higher speeds.

Here are specs on the Megazilla V8 as per the Ford Performance website:

MEGAZILLA™ features:

• 7.3L displacement
• 10.5:1 compression
• CNC ported aluminum cylinder heads
• low profile intake manifold
• 92mm throttle body
• Mahle forged pistons
• Callies H-beam forged connecting rods
• production steel crankshaft
• hi-performance 7.3L camshaft w/ VCT delete
• production cast iron block

Peak power output (J607 standard):

• 612 HP @ 5,580RPM
• 670 lb-ft of torque @ 3,920RPM
• Over 500 lb-ft of torque from 2,500RPM to 6,000RPM

 

[21BRONCO]

OMG. What a dream. someone up for step by step diy LOL
Damn that sounds amazing.

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