🔥 Twisted Street™ Big Block E4OD Performance Transmission

400 HP Rated | Ford Big-Block / 385-Series Pattern

Ford E4OD • 1989–1998

351M • 400 • 370 • 429 • 460 • 385-Series Based Builds

Daily Driver • Work Trucks • Towing • RV / Motorhome • Big-Block Swaps

The Twisted Street™ Big Block E4OD is our 400 HP build for Ford big-block-pattern gas applications.

This transmission uses the Ford 385-series big-block E4OD case, originally found behind the 7.5L / 460 in Ford truck and heavy-duty applications.

The same bellhousing pattern can also be used with compatible 351M, 400, 370, 429 and 385-series-based engine combinations when the rest of the swap is set up correctly.

The Street is built for stock and mildly modified big-blocks, work trucks, towing, RVs, motorhomes and street-driven swaps that don't need the billet hard parts used in our higher-horsepower builds.

Rated up to 400 HP.

🔧 TWISTED STREET™ INTERNAL BUILD

✔️ High-Energy Frictions

New high-energy friction plates throughout.

✔️ New Steels

New steel plates throughout.

✔️ Forward & Direct Clutch Packs

Forward and direct clutch packs are set up for the big-block E4OD application with clutch clearance checked during assembly.

✔️ New Heavy-Duty Intermediate Band

✔️ Intermediate Sprag / One-Way Clutch

Intermediate sprag and races are inspected and replaced as required.

✔️ Overdrive Sprag / One-Way Clutch

Overdrive one-way clutch is inspected and replaced as required.

✔️ New Bushing Set

New bushings installed during the rebuild.

✔️ Bearings & Thrust Washers

Bearings and thrust washers are inspected and replaced as required.

✔️ New Transmission Filter

✔️ NEW Transmission Pan with Drain Plug

Every Twisted Street™ Big Block E4OD gets a brand-new transmission pan with drain plug.

We do not reuse the old pan.

⚙️ TRANSGO SK E4OD VALVE BODY

✔️ TransGo SK E4OD Shift Kit

The Street uses the TransGo SK E4OD to correct common E4OD pressure, shift, converter-feed and lube problems.

Includes:

✔️ Pressure regulator boost valve

✔️ Line regulator valve

✔️ 1-2 shift valve spring

✔️ Line-to-lube update

✔️ High-temperature direct clutch seal

✔️ Updated direct clutch outer seal

✔️ Heavy-duty coast-clutch snap ring

✔️ OD housing spiral-lock snap ring

✔️ Converter feed / charge updates

The valve body is cleaned, checked and set up for positive shifts without making a heavy street truck, tow rig or motorhome shift like a race transmission.

⚡ E4OD SOLENOID PACK

✔️ Solenoid Pack Inspected & Tested

The correct E4OD solenoid pack is matched to the year and transmission configuration.

Solenoid operation is checked during the build. Failed or out-of-spec units are replaced.

Early and late E4OD solenoid packs are different, so the correct pack is used for the transmission being built.

🔩 CENTER SUPPORT & CLUTCH FEED

The center support and case are checked closely during teardown.

✔️ Center Support Checked for Wear

✔️ Case Lugs Checked at Center Support

✔️ Center Support Sealing Checked

✔️ Intermediate Clutch Feed Checked

✔️ Direct Clutch Feed Checked

✔️ Applicable E4OD Updates Installed

A worn center-support area can cause clutch-feed leaks, case wear and low lube flow. These areas are checked and corrected during the rebuild.

⚙️ REMANUFACTURED E4OD PUMP

The pump is completely torn down and rebuilt.

✔️ Pump Body Inspected

✔️ Stator Support Inspected

✔️ New Pump Bushing

✔️ Pump Gears Inspected

✔️ Worn Pump Gears Replaced

✔️ Pump Clearances Reset

✔️ Pressure Regulator Checked & Updated

✔️ Converter Feed / Lube Updates

✔️ Early Pump Update

Early E9/F1 pump assemblies are updated to the later F5/F8 pump design where required.

🔩 HARD PART INSPECTION

Every reusable hard part is cleaned and checked before assembly.

We inspect:

✔️ Forward Drum

✔️ Direct Drum

✔️ Coast Clutch Drum

✔️ Center Support

✔️ Input Shaft

✔️ Intermediate Shaft

✔️ Output Shaft

✔️ Forward Planetary

✔️ Overdrive Planetary

✔️ Reverse Planetary

✔️ Sun Gear & Shell

Anything worn, cracked, damaged or out of specification is replaced.

🚙 BIG-BLOCK TORQUE CONVERTER INCLUDED

✔️ Heavy-Duty Lockup Torque Converter

The Street includes a heavy-duty lockup converter matched to the actual engine and vehicle combination.

Converter setup is based on:

• Engine
• Vehicle weight
• Rear gear
• Tire size
• Towing requirements
• Intended use

A factory 7.5L / 460 replacement and a 429 or stroker big-block conversion are not automatically the same converter setup.

We match the converter to the application instead of using one converter for every big-block E4OD.

❄️ HIGHLY RECOMMENDED DEEP ALUMINUM PAN UPGRADE

The Twisted Street™ Big Block E4OD comes standard with a NEW transmission pan with drain plug.

For big-block trucks, towing, RVs, motorhomes and other heavy applications, we HIGHLY RECOMMEND upgrading to our:

🔥 High-Capacity Deep Aluminum Cooling Pan

✔️ Adds approximately 5–7.5 quarts of fluid capacity

✔️ Finned cast-aluminum construction

✔️ Magnetic drain plug

✔️ Temperature-sender port where applicable

✔️ Additional fluid capacity for better heat control

Exact pan and added capacity vary by application.

OPTIONAL UPGRADE. NOT INCLUDED.

🧊 COOLER REQUIREMENT

For towing, hauling, RV, motorhome and regular heavy-load use:

A PROPERLY SIZED AUXILIARY TRANSMISSION COOLER IS REQUIRED.

The cooler and cooler lines must be flushed and checked for unrestricted flow before installation.

If the previous transmission put metal or clutch material into the cooling system, replace the contaminated cooler.

A transmission-temperature gauge is strongly recommended for RVs, motorhomes and trucks that regularly tow.

🛠️ BIG-BLOCK / 385-SERIES APPLICATIONS

This transmission uses the Ford big-block / 385-series E4OD bellhousing pattern.

Factory Replacement Applications

Primarily Ford vehicles originally equipped with the:

7.5L / 460 EFI

Including applicable:

• F-250
• F-350
• F-Super Duty / Chassis Cab
• E-Series
• RV & Motorhome Chassis
• Work / Utility Trucks

🔧 CONVERSION & PERFORMANCE APPLICATIONS

The big-block-pattern E4OD can also be built for compatible:

• 351M
• 400 / 400M
• 370
• 429
• 460
• 385-Series-Based Stroker Engines

For conversion applications, the transmission itself is only part of the swap.

Converter, flexplate, engine balance, starter, transmission controller, crossmember, driveshaft, output shaft and vehicle wiring may need to be addressed depending on the combination.

CALL US BEFORE ORDERING A CONVERSION APPLICATION.

❌ NOT FOR FORD FE ENGINES

The Big Block E4OD uses the Ford 385-series bellhousing pattern, NOT the FE pattern.

It does NOT directly bolt to Ford FE-series engines including:

• 352
• 360
• 390
• 406
• 410
• 427
• 428

An adapter would be required for an FE application.

⚠️ APPLICATION INFORMATION REQUIRED

Before we build the transmission, we need:

• Year
• Engine
• Vehicle
• 2WD or 4WD
• Horsepower
• Tire size
• Rear gear ratio
• How the vehicle is used
• Approximate towing weight, if applicable
• Factory replacement or conversion

E4ODs changed throughout production. Case, electronics, valve body, output shaft and other parts have to match the application.

🔥 TWISTED STREET™ BIG BLOCK E4OD

400 HP RATED

351M • 400 • 370 • 429 • 460 • 385-Series Based

Daily Drivers • Work Trucks • Towing • RVs • Motorhomes • Big-Block Swaps

Built Tough. Built Twisted.™