EP-440B Pro Billet Distributor for Chrysler Dodge Mopar 413 426 440 Big Block V8

The EP-440B is a CNC-machined 6061-T6 billet aluminum Pro Billet distributor for Chrysler Dodge Mopar RB big block V8 (413, 426 Wedge, 440 CID including 440 Six Pack). Small-diameter housing for tight head combinations. Fits 426 Wedge only — NOT 426 Hemi. Requires external ignition box (MSD 6/7/8) and external coil. Adjustable mechanical advance with lockout. Fits Charger, Road Runner, Super Bee, Challenger R/T, D-series trucks. ISO 9001:2015, CE-EMC, UL, UKCA certified.

EP Aftermarket Ignition Distributor

EP-440B — Pro Billet Distributor for Chrysler Dodge Mopar RB Big Block 413, 426, 440 V8

Pro Billet distributor · 6061-T6 CNC billet · Mopar RB 413 426 Wedge 440 · Ignition box required · Charger Road Runner race

ISO 9001:2015CE-EMCUKCAGlobal Export

Model

EP-440B

Type

Pro Billet

Engine

Mopar RB 413/426/440

Housing

6061-T6 CNC

Box

Required

Technical specifications

ParameterDetail
EP Model No.EP-440B
Product typePro Billet Performance Distributor
Vehicle applicationChrysler, Dodge, Plymouth — RB big block V8 muscle cars and trucks
EngineChrysler RB big block 413 CID, 426 Wedge, 440 CID (incl. 440 Six Pack)
NoteFits 426 Wedge only -- NOT 426 Hemi (Hemi requires separate distributor)
HousingCNC-machined 6061-T6 billet aluminum, small-diameter design
PickupHigh-precision magnetic pickup
AdvanceFully adjustable mechanical advance with lockout capability
REQUIRESExternal ignition box (MSD 6/7/8 or equiv.) · External coil
CertificationISO 9001:2015 · CE-EMC · UL · UKCA
BrandEP (Ever-Power)

The EP-440B is a CNC-machined 6061-T6 billet aluminum Pro Billet distributor for Chrysler's legendary RB big block V8 family -- the 413, 426 Wedge, and 440 cubic inch engines that defined the pinnacle of Mopar muscle car performance. The 440 Six Pack with three Holley two-barrel carburetors and the 426 Wedge Cobra are among the most storied high-performance engines of the classic American muscle era, and serious builds on these platforms demand the precision of billet ignition hardware.

Small-diameter billet housing is a standard feature of the EP-440B, following the Chrysler 426/440 Pro-Billet convention established by MSD: the small diameter housing allows the distributor to fit tight block and head combinations that arise in serious 440 and 426 builds with large-port cylinder heads, Edelbrock or Indy big block heads, and B1-derived casting modifications. The tight clearances common in competition-level Mopar big block configurations make the small-diameter billet housing a practical necessity rather than just an aesthetic upgrade.

Important: the EP-440B fits the 426 Wedge engine but NOT the 426 Hemi. The Hemi uses an entirely different dual-point distributor design with unique geometry. For 426 Hemi applications, a Hemi-specific distributor is required. The EP-440B requires an external ignition box and external coil.

EP CNC precision production equipment for Pro Billet distributor manufacturing

Key features

RB big block 413/426 Wedge/440 coverage

Covers the complete Chrysler RB big block family including 413, the 426 Wedge, and the legendary 440 Six Pack across all B-body and D-series truck applications.

Small-diameter for tight 440 head combinations

Small-diameter housing specifically clears large-port performance cylinder heads and B1-derived heads common in competition 440 and 426 Wedge builds.

426 Wedge only -- NOT 426 Hemi

The 426 Hemi uses a completely different distributor. The EP-440B fits 426 Wedge. Identify your engine by valve cover shape -- flat/rectangular is Wedge, humped/round is Hemi.

Lockout for 440 Six Pack race tuning

440 Six Pack builders using MSD ignition boxes lock out the mechanical advance and manage all timing at the box for precise three-carb race tuning.

Vehicle fitment

MakeModelYearsEngine
DodgeCharger / Super Bee1962-1978440 Six Pack / 426 Wedge V8
PlymouthRoad Runner / GTX1968-1974440 / 426 Wedge V8
DodgeCoronet1965-1971426 Wedge / 440 V8
DodgeD-series Truck1966-1978413 / 440 V8
DodgeChallenger R/T1970-1974440 Six Pack V8

EP Pro Billet distributor full series compatibility overview

Application scenarios

440 Six Pack Charger and Road Runner race build

440 Six Pack Charger and Road Runner race builds with MSD ignition systems use the EP-440B for billet precision trigger accuracy with small-diameter housing clearance.

426 Wedge competition build

426 Wedge competition builds requiring the highest ignition trigger accuracy pair the EP-440B with MSD 7AL-2 or 8-Plus ignition controls.

Mopar big block wholesale supply

Performance shops stocking Mopar big block billet distributors carry the EP-440B as the Pro Billet option alongside the R2R EP-440M for their full customer range.

Installation guide

Confirm engine is 426 Wedge or 440 (not 426 Hemi). Disconnect battery. Lower EP-440B verifying small-diameter housing clears performance heads and valve covers. Connect magnetic pickup to ignition box per manufacturer wiring diagram. Connect box output to external coil. Set base timing. Configure advance at ignition box -- particularly important for 440 Six Pack applications where timing is critical to carburetor balance. Approximately 45-60 minutes.

Need pricing or technical assistance?

We respond within 24 hours · MOQ as low as 1 unit · OEM/private-label available

Quality assurance

Every EP Pro Billet distributor is machined from 6061-T6 aerospace-grade billet aluminum under ISO 9001:2015 certified quality management. Each unit is individually tested for magnetic pickup signal accuracy, mechanical advance travel range, shaft concentricity, and housing dimensional compliance before shipment. CE-EMC electromagnetic compatibility certification, UL listing, and UKCA conformity mark cover all units across our major global export markets.

EP ISO 9001 CE EMC UL UKCA enterprise certifications

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About the manufacturer

EP (Ever-Power) — Automotive Ignition Specialist Since 1999

25+

Years in production

300+

Distributor models

80%

Export ratio

4

Certifications

HZPT is the international brand of Ningbo Xianlong Automobile Fittings Co., Ltd., established 1999. Our Pro Billet distributor range covers every major classic performance V8 platform -- Chevrolet SBC/BBC, Ford Windsor/Cleveland, Chrysler/Dodge Mopar small block and big block, and Holden 253/308 -- providing race-quality billet ignition hardware across the complete spectrum of classic American and Australian performance engines.

EP ignition distributor production line

EP Pro Billet distributors require an external high-output ignition box (MSD 6, 7, or 8-series or equivalent) and an external ignition coil. This configuration gives the racer or performance builder full control over timing advance, rev limiting, and ignition output -- capabilities that self-contained HEI or Ready-to-Run units cannot provide. Wholesale buyers receive factory-direct pricing with no distributor markup on the EP Pro Billet range. EP is part of the Ever-Power Group, also producing worm reducers and a comprehensive range of mechanical transmission products.

Frequently asked questions

What is a Pro Billet distributor and how does it differ from HEI and Ready-to-Run?
A Pro Billet distributor is the highest-performance tier in the distributor range. Its housing is CNC-machined from 6061-T6 aerospace-grade billet aluminum for superior dimensional accuracy and strength compared to cast-aluminum housings used in HEI and standard Ready-to-Run distributors. Pro Billet distributors do NOT include an internal ignition module -- they require an external high-output ignition box (such as MSD 6A, 6AL, 7AL-2, 8-Plus, or equivalent) to function. This makes them unsuitable for simple street swaps but ideal for serious performance and race applications where the ignition box provides rev limiting, timing retard, multiple spark discharge, and other advanced functions. HEI distributors are fully self-contained (coil and module inside the cap) requiring only one wire. Ready-to-Run distributors include an internal module but need an external coil. Pro Billet distributors need both an external ignition box AND an external coil.
What ignition box is compatible with the EP-440B?
The EP-440B Pro Billet distributor is compatible with any high-output external ignition box that accepts a magnetic pickup trigger signal. This includes MSD 6A, 6AL, 6AL-2, 7AL-2, 8-Plus, and 10-series ignition controls, as well as equivalent units from Holley, Mallory, Crane, and FAST. The ignition box must be connected between the distributor magnetic pickup and the external ignition coil. Do NOT connect the distributor directly to a coil without an ignition box -- the Pro Billet distributor has no internal module to produce the trigger signal the coil requires. Consult the ignition box manufacturer's wiring diagram for the correct connection procedure for magnetic-pickup distributors.
Can the EP-440B be locked out for maximum timing control on a 440 Six Pack race engine?
Yes. The fully adjustable mechanical advance on the EP-440B can be locked out completely by installing the supplied stop bushings in their maximum-retard position, setting the distributor to base timing only. All additional advance is then managed exclusively by the external MSD or equivalent ignition box. For 440 Six Pack race engines where precise timing control is critical to carburetor balance and detonation management, full lockout with ignition box advance control is the recommended approach. This gives the tuner exact control over total advance, advance rate, and timing retard under boost or at high RPM that mechanical spring-and-weight systems cannot provide.
Does this distributor fit Mopar Magnum engines (1992 and later)?
No. EP Pro Billet Mopar distributors are designed for the classic Chrysler LA small block (273/318/340/360) and RB big block (413/426/440) engine families only. They are NOT compatible with the Mopar Magnum 5.2L or 5.9L engines introduced in 1992, which use a distributor with an integrated cam position sensor. Verify your engine is the LA or RB family before ordering.
Can the mechanical advance be locked out for full-race applications?
Yes. The adjustable mechanical advance mechanism on EP Pro Billet distributors can be locked out for all-out racing applications where all timing advance is managed exclusively by the external ignition box. To lock out the advance, install the supplied stop bushings in their maximum-retard position and set the initial timing at the distributor to your required base timing figure. All additional advance -- both curve and total -- is then dialled in at the MSD or equivalent ignition box. This gives the tuner precise control over the advance curve that mechanical spring-and-weight systems cannot match. For street and mild performance applications, the mechanical advance is typically left operational and the advance curve is tailored using the supplied spring and bushing sets.
How do I order the EP-440B for export or wholesale?
EP Pro Billet distributors are available in single-unit quantities for market sampling, carton quantities for performance shops, and container-volume for wholesale distribution. OEM branding, private-label packaging, and custom color are available for qualifying volumes. Standard production lead time is 15-30 days. Contact our team via the inquiry form or WhatsApp for pricing, availability, and minimum order quantities.

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300+ models · 65K coil · Brass terminals · Factory-direct pricing · Global export

Disclaimer: Chevrolet, Ford, Chrysler, Dodge, Plymouth, Holden, MSD, and other brand names and OEM part numbers are used for product compatibility reference only. EP (Ever-Power) products are high-quality aftermarket replacement parts and are not affiliated with original vehicle or component manufacturers. All trademarks remain the property of their respective owners.

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Additional information

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Most of our products are exported to Europe or Americas, both standard and nonstandard products available. We can produce as per your drawing or sample. Material can be standard or as per your special request. If you choose us, you choose reliable.

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Materials Available

1. Stainless Steel: SS201, SS303, SS304, SS316, SS416, SS420
2. Steel:C45(K1045), C46(K1046),C20
3. Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200(CuZn37), C28000(CuZn40)
4. Bronze: C51000, C52100, C54400, etc
5. Iron: 1213, 12L14,1215
6. Aluminum: Al6061, Al6063
7.OEM according to your request
product materials available

Surface Treatment

Annealing, natural canonization, heat treatment, polishing, nickel plating, chrome plating, zinc plating,yellow passivization, gold passivization, satin, Black surface painted etc.

Processing Method

CNC machining, punch,turning, milling, drilling, grinding, broaching, welding and assembly
product finishing

QC & Certificate

Technicians self-check in production,final-check before package by professional Quality inspector
ISO9001:2008 , ISO14001:2001,ISO/TS 16949:2009

Package & Lead Time

Size: Drawings
Wooden Case/Container and pallet, or as per customized specifications.
15-25days samples. 30-45days offcial order
Port: Shanghai/Ningbo port
product packages

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