Performance Adapters

🚨 NEW PRODUCT RELEASE 🚨

Introducing the **Honda K-Series to Jaguar 3.0L / 5.0L 8HP Transmission Adapter Kit**!

Take your RWD K-Series build to the next level by pairing a Honda K20/K24 with the strong and refined Jaguar 8HP automatic transmission platform. Designed, engineered, and made from billet 6061 aluminum and steel, this kit delivers the precision and durability needed for everything from street cars to race and drift builds.

✅ Fits Honda K20, K24 & other K-Series variants
✅ Adapts to Jaguar 3.0L & 5.0L HP transmissions (11.5" converter)
✅ CNC-machined adapter plate for precise alignment
✅ Includes crankshaft adapter, starter, and hardware
✅ Supports high-horsepower applications
✅ Uses an affordable off-the-shelf flexplate solution
✅ Perfect for rear-wheel-drive K-Series swaps

💲 **$995 + $24.99 flat-rate shipping anywhere in the lower 48 states.**
🌎 **International shipping available.**

Whether you're building a drift car, track weapon, or one-of-a-kind street machine, this kit combines the aftermarket support of the Honda K-Series with the performance and gear ratios of the Jaguar HP transmission.

🔥 Available now from Performance Adapters!

🔥 Modern Transmissions for Your Ford Flathead! 🔥

Our Ford 8BA Flathead V8 (1949-53) adapter kits let you bolt up popular GM and Ford automatic transmissions with zero cutting or fabrication required.

✅ GM Options:
TH350, TH400, Powerglide, 2004R, 700R4, 4L80

✅ Ford Options:
C6, AOD, AODE, 4R70W, 4R75W, 6R80, 10R80

Each kit includes a precision 1/2" billet adapter plate, starter, flexplate, hardware, and instructions for a true bolt-on installation.

Perfect for hot rods, customs, race cars, and modern drivetrain swaps.

💲 $895 + $24.99 shipping anywhere in the lower 48 states
🌎 International shipping options available.

🔥 OLD SCHOOL HEMI. MODERN 8-SPEED POWER. 🔥

Transform your vintage Mopar with our Gen 1 Hemi to ZF 8HP Adapter Kit — bringing modern performance, lightning-fast shifts, and incredible drivability to your classic build.

Compatible with:
✔ Chrysler FirePower
✔ DeSoto FireDome
✔ Dodge Red Ram
✔ 8HP70 / 75 / 90 / 95 transmissions

KIT INCLUDES:
• Adapter Plate
• Flexplate
• Crank Spacer
• Starter
• Inspection Cover
• Hardware

⚡ Fast, crisp 8HP shifts
⚡ 1000+ HP capable
⚡ Better cruising RPM & highway manners
⚡ Perfect for hot rods, drag cars, customs & pro touring builds

No more sacrificing drivability for vintage style — now you can have both. 💪

💲 $895
📦 $24.99 flat-rate shipping in the lower 48
🌎 International ship

🔥 NEW PRODUCT RELEASE 🔥

Honda J-Series Gen 1 to Chevy V8 Transmission Adapter

$945 + 24.99 Flat Rate shipping anywhere in the lower 48. International shipping also available. Limited inventory on our first batch.

Easily bolt your Honda J-Series V6 to popular GM Small Block Chevy transmissions using off-the-shelf GM components.

Compatible Engines

J30A1 • J30A3 • J32A1 • J32A2 • J35A1 • J35A3 • J35A4

Transmission Compatibility

Automatic:
Powerglide • TH350 • TH400 • 700R4 • 2004R • 4L60 • 4L80E

Manual:
T5 • TKO500/600 • TKX • TR3550 • T56 • Magnum • TR6060 • Magnum XL

Features

✔ Uses GM High Torque Mini Starter
✔ Standard GM 168T flexplate & SBC flywheel compatible
✔ No custom flywheel, clutch, or converter required
✔ Includes crank adapter
✔ 0.50" adapter plate thickness

⚠ OEM oil pan modification required.

Perfect for swaps, drift cars, hot rods, and custom builds.

🚨 Pre-Orders Are LIVE 🚨

We’re officially opening pre-orders for adapting the 7.3 Power Stroke & IDI engines to the 10R140 transmission.

Important: This is for the 10R140 only. The 6R140 controller is still in development—more info on that later.

🔧 What’s New:
• Updated adapter plate design
• Now using 6.4L starter (better performance, easier fitment, easier to source)

🚙 Fitment Highlights:
• Works with NP271 & NP273 transfer cases
• Keeps factory t-case location (no custom driveshafts needed)
• Retains OEM flexplate

🎁 Pre-Order Bonus (May 4–May 17):
• FREE 6.0/6.4L starter ($140–$200 value)
• Cooler line adapter (8AN)
• Extra $75 off with transmission cooler package

📦 Flat-rate shipping: $45 (lower 48)
International available, please contact us for pricing
⏱ Lead time: 12–14 weeks after initial pre-order closes

Multiple package options available for 7.3 Power Stroke and IDI (’88–’94).

If you have questions or need help choosing a setup, send us a message.

We’re excited to finally get these out to you—thank you for the support 👊