FAQ LS LT SB BB to 8HP70 75 90 95 Dodge Adapter - BMW E9x E8x E6x

GA3 LS LT SB BB to 8HP70 8HP75 Dodge Transmission Adapter

BMW E90 E91 E92 E93 E82 E88 E60 E61

Compatibility Overview

Vehicle: BMW E9x E8x E6x (Ask us about F-Series & Other Models)

Engine: GM LS LT SB BB

Transmission: Dodge 8HP70 75 90 95 GEN3 HEMI Ram/Durango/Jeep/Charger/Challenger

Driveshaft: OE E9x E8x 105mm Flex Disc, Aftermarket 1350 U-Joint or Other 43 Spline Output Flange.

Starter: OE Shrouded or Aftermarket Unshrouded – No Modification Required

Mounting: Billet Upper Bracket. OE Bushings & 6HP A/T Lower Bracket or Adjustable LSE90 X-Member.

Cooler Lines: Billet 8AN-ORB Adapter Block w/PTFE Line Kit. Optional 10AN sizing available.

Cooler Setup: Adapt an existing AN Cooler or consult with us to add a Cooler & Thermostat Package.

Shifter: BMW F3x Shifter Or Aftermarket "DCT" Shifter - With our Remote Manual Park Release Kit

Flexplate: OE Style GM Flexplate; 3-Bolt 11-1/16" Ø Dia., 3-Bolt 10-3/4" Ø Dia., 6-Bolt 11-1/2" Ø Dia.

Crankshaft: Compatible with LS LT Short Crank & LS LT SB BB Long Crank; No changes required.

What is the Total Conversion Cost for 8HP into the E9x or E8x Chassis?

Average minimum conversion cost starts out around $4000-$5000 when utilizing a stock 8HP70/75. Based on the chosen components & optional upgrades total conversion cost could easily range from $6000-$10,000+. Estimates DO NOT include installation Labor which will widely vary based on the requirements of the chosen component & must be considered. These are broad overall estimates taking into account the cost of ALL necessary components listed for a basic conversion; GA3 Conversion Kit, 8HP Transmission, Standalone TCU/Wire Harness, Fluid, Service Parts, Coding & Tuning

What other components & services are required to complete the conversion?

• 8HP70 90 Gen 1 or 8HP75 95 Gen 2 – Dodge RWD GEN3 HEMI

• Standalone TCU & Wire Harness – MaxxECU, Turbo Lamik, CANTCU, Sound German etc.

• 3 Gallons ATF – Adrenaline Speed Shift ATF or Similar Group IV Synthetic Fluid Recommended.

• Service Parts – New Pan/Filter Assembly, Mechatronic Connector Seal, Input Seal etc.

• Coding – Varies based on Standalone TCU/Vehicle – Contact Eric at Houston BMW Coding.

• Tuning – Varies based on Standalone TCU chosen, vehicle build requirements & overall complexity.

• Labor – We Provide direct project support from A to Z for DIY or Professional installations.

How much power can this transmission setup support?

Stock Factory Rating

8HP70 @516 lb-ft or 700nm

8HP75 @551 lb-ft or 750nm

8HP90 @664 lb-ft or 900nm

8HP95 @700 lb-ft or 950nm

All of these stock transmission cores commonly handle 600-800 lb-ft or more.

They can be built to handle 1000+ lb-ft TQ with upgraded clutch packs & billet components.

Proven 7 & 8 Second 1/4-Mile Drag Racing Capability by Dodge & BMW Platforms.

What are the differences between the Ram, Durango, Jeep, Charger & Challenger 8HP?

We recommend using the Ram "Truck" version whenever possible for lowest cost and ease of installation but ultimately each customers build goals & budgets should be factored in as well.

The "Truck" versions of the 8HP has two starter bubbles, smooth bore transmission line ports & factory 1350 output driveshaft flange. Best availability & pricing for these cores due to the high production numbers over a decade.

The "Durango & Jeep" version of the 8HP is almost identical to the "Truck" version, sharing the same bellhousing but has two small differences. CV style output flange requires adapter for 1350 U-Joint. Transmission line ports are threaded instead of smooth bore like the "Truck" version.

The "Charger/Challenger" version of the 8HP has four slight differences that add complexity to the installation process. Starter fitment requires cutting the bellhousing for OEM starter fitment. Alternatively an unshrouded starter may be used without modification. The output flange is not compatible with 1350 U-Joints. Transmission line ports are threaded instead of smooth bore like the "Truck" version. No bolt boss location on LH side for mounting our Manual Park Release Cable Bracket.

What Transmission is recommended & how much do they cost?

$300-$1000+ 8HP70 - 2013-2017 "Classic" V8 Ram – 34mm Small Pilot T.C.

$300-$1000+ 8HP70 - 2018-2024 "Classic" V8 Ram – 46mm Large Pilot T.C.

$800-$1500+ 8HP75 - 2019-2024 "New" Ram – 46mm Large Pilot T.C.

$600-$1200+ 8HP70 - 2013-2017 V8 Durango/Jeep/Charger/Challenger – 34mm Small Pilot T.C.

$600-$1200+ 8HP70 - 2018-2024 V8 Durango/Jeep/Charger/Challenger – 46mm Large Pilot T.C.

$2000-$5000+ 8HP90 2015-2023 V8 Charger/Challenger Hellcat - 34mm Small Pilot T.C.

$2000-$5000+ 8HP95 2021-2024 "New" V8 Ram TRX - 34mm Large Pilot T.C. (Convertible to RWD)

$2000-$5000+ 8HP95 2021-2025 Durango Hellcat - 46mm Large Pilot T.C. (Convertible to RWD)

$2000-$5000+ 8HP95 2018-2021 Jeep Trackhawk - 46mm Large Pilot T.C. 4WD (Convertible to RWD)

What gear ratios do the 8HP70 75 90 95 have?

ALL Dodge 8HP70 75 90 95 have Eight forward speeds and share the same ratios listed below.

4.714, 3.143, 2.106, 1.667, 1.285, 1.000, 0.839 and 0.667:1

What Torque Converters are compatible?

13-17 OE Dodge Gen 1 Torque Converter – 34mm Small Pilot

2018+ OE Dodge Gen 1 & Gen 2 Torque Converter – 46mm Large Pilot – Minor Modification REQUIRED

Circle D HP & Pro-Series Dodge 8HP Torque Converters – Custom Built; 34mm Small Pilot REQUIRED

What Starters are compatible?

•OE Smooth Nose Gen III & Gen IV – Ram/Durango/Jeep No modification.

Charger/Challenger Minor modification required.

•OE Ribbed Nose Gen III – Ram/Durango/Jeep No modification.

Charger/Challenger Minor modification required.

•OE Camaro/Caprice/G8 – Ram/Durango/Jeep No modification.

Charger/Challenger Minor modification required.

•Aftermarket Unshrouded – No modification; Most high torque starter.

What driveshafts are compatible? OEM, M3, Ford 8.8?

OE BMW Flex Disc (Guibo) style driveshafts with 6HP/8HP 96mm, 105mm & 110mm Output Flanges. Ford 8.8 & similar 1350 U-Joint driveshafts are directly compatible with the RWD 8HP Ram Output Flange. This requires using the OE Dodge Ram RWD Driveshaft Flange & 1350 U-Joint Flange Part# 68417915A. Please consult with us for further assistance if you aren't sure about fitment. Are any modifications required to fit the 8HP assembly in small transmission tunnels?

Recommended Mod # 1 Transmission Tunnel Clearance

Remove unused bolt mounting bosses on body/bellhousing that may interfere with the transmission tunnel. Necessary Tools for Mod # 1 = Die or Angle Grinder with Sand/Flap Disc/Carbide Burr/Grinding Stone etc. Cut/Grind away bolt mounting bosses and smooth/contour the surface for maximum tunnel clearance.

Optional Mod # 2 N/A Exhaust/Header Clearance

Remove LH starter bubble to allow Headers/Exhaust Clearance. Not necessary for most Turbo Setups. Necessary Tools for Mod # 2 = Die or Angle Grinder with Sand/Flap Disc/Carbide Burr/Grinding Stone etc. Cut/Grind away LH Starter bubble and profile to the shape of the Adapter plate to allow maximum exhaust clearance.

When should the transmission be purchased?

While you can purchase parts at anytime we recommend waiting until approximately 1-3 weeks ahead of the installation date. Most Used Parts have a 30 day money back return period with a receipt. Within the first 30 days a pre-installation inspection is recommended so if any issues are discovered you can quickly return it. Keep in mind the buyer is usually responsible for returning the item locally or paying for return shipping cost which can be substantial.

Where do I find a transmission and what help is provided to ensure a good outcome?

We provide direct support to all customers and strongly encourage them to work with us through this process. Car-Part, eBay and LKQ are most common recommended sources for used transmissions. Be mindful when purchasing from individuals or any business with cash/no receipt. Ask what the return policy is ahead of time to avoid surprises & always get a receipt.

Our process starts with a broad search of donors that meet our criteria. Using the VIN number we gather Auction/Sale/Wreck information which is used to help verify the advertised mileage and condition of the transmission is accurate. Reviews of the Auto Parts Yard selling the product are also checked. We consult with the customer on choosing one of these transmissions.

We cannot guarantee or be responsible for the condition of these used transmissions but we work hard to reduce the risk and difficulty associated for customers unfamiliar with the process. Local sale is preferred but shipping is common. When receiving freight its best to have a business address or location with a loading dock/forklift or request pickup at your local freight terminal. Residential addresses lift gate service adds cost to freight quotes & most sellers prefer a business/terminal address.

What about the transmission cooler setup?

Our Kit includes components to adapt an existing AN8 or AN10 transmission cooler.

8HP AN Adapter, 8AN PTFE Line Kit w/10 fittings, 10AN/8AN Reducers & A/T Radiator Block-Off for deleting OEM Cooler.

OE Cooler is not Recommended/Compatible. Add AN Cooler Core & Thermostat to complete your cooler setup. Not sure what parts you need? Consult with us directly to add a cooler core & inline thermostat to your kit.

What is a TCU & what options are available to control the 8HP Transmission?

"Transmission Control Unit" is the computer which controls the transmission much like an ECU/Engine Control Unit. Standalone TCU Options – MaxxECU, Turbo Lamik, CANTCU, Sound German etc.

What is required to install the Standalone TCU?

The complexity of standalone installation greatly depends on the controller chosen, its capabilities & components supplied. Some have plug & play wire harness options while others will require intermediate to advanced level wiring to make your own harness. We recommend consulting with the Standalone TCU manufacturer's website & installer/tuner before purchase.

MaxxECU – CAN based TCU for Dodge Gen 1 8HP or Combo ECU/TCU for LS engine and Gen 1 8HP. Multiple ECU model options available with unterminated and custom terminated harnesses. Wide range of features including Trans-Brake launch control, CAN bus integration and much more. Great bang for buck race-oriented ECU/TCU. Extensive support/wiki/community.

Turbo Lamik – Direct Control based TCU for Gen 1 & Gen 2 8HP. Requires removing OEM TCU Chip or "Brain" to hardwire directly into the solenoids/sensors. Wide range of features; Trans-Brake & Virtual Clutch Pedal for Drift Car setups. Well suited to Race setups requiring a high level of control with minimal restrictions. Well established with good support & community.

CANTCU – CAN based TCU for Dodge/BMW Gen 1 & Gen 2 8HP; available with pre-made harness or unterminated. CANformance & XHP Tuning/Flash Options. OEM style launch control. Effective solution with easy installation, large compatibility range, customer support and instructions. Excels at OEM level drivability w/some race features.

Sound German PCS – CAN based TCU for Dodge Gen 1 & Gen 2 8HP. Requires Dodge Shifter. Small package with basic wiring/inputs required. Custom calibration/tuning files available through Sound German. Many features including paddle shifters, Sport/Track mode & Trans-Brake launch control. Knowledgeable support & customer service.

What shifters are compatible?

Our Shifter Adapter included in this kit is designed for the F-Series Electronic Shifter.

Ask us about adding a pre-sourced good condition F-Series shifter to your kit or source your own. Premium "DCT" branded sequential style short and long handled shifters are also available!

There are two compatible BMW F-Series shifters which both have 10 pin connectors located at the front side. BMW F2x/F3x/F8x – 61319296896 or F0x/F1x – 61319296904 – Use RealOEM.com for cross reference information.

Other BMW F/G-Series, Dodge & aftermarket shifters may be compatible depending on the Standalone TCU being used. Please consult with us prior to purchase if you intend to use another shifter; Custom shifter adapter will be required.

Will cruise controls work?

Yes; Dependent on chosen Standalone TCU/ECU etc.

Wiring may or may not be required.

Will steering wheel paddle shifters work?

Yes; Dependent on chosen paddle shifters & Standalone TCU/ECU etc.

Wiring may or may not be required.

How does shipping work?

Our preferred method of shipping is UPS Ground; Fully Insured & Signature Required.

Upon final payment customer is notified of estimated shipping date.

Confirmation of package drop-off and tracking information are provided ASAP.

Expedited & International shipping quotes available upon request.

What about local sales tax?

8.25% Sales Tax will be applied to Texas orders.

What about International import fees?

International customers are responsible for all customs import taxes, duties & tariffs.

LS LT SB BB to 8HP Dodge Transmission Adapter Kit - BMW E9x E8x E6x

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