Looking for the best flexplates for your Chevy 383/400? We’ve rounded up the top 6 options to help you find the perfect fit for smooth power transfer and reliable performance.
Flexplates are vital for Chevy 383/400 engines. They ensure smooth power transfer and strong starter engagement. The 168-tooth design is a top choice for reliability.
These flexplates handle high-performance demands. Brands like Speedway Motors and Speedmaster offer track-tested strength.
Dual bolt patterns mean easy transmission fits. External balance parts keep your engine running smooth and durable. Ready to upgrade? Let’s dive into the best picks.
List of Top 6 Flexplates for Chevy 383 400
| Image | Title | Best For | Price |
|---|---|---|---|
![]() |
Speedway Motors Flexplate 168 Tooth Compatible with Chevy Small Block 400 Engine Two Piece Rear Main Seal External Balance Dual Bolt Pattern Non SFI |
This flexplate is perfect for car enthusiasts who want to upgrade their Chevy small block 400 engine. It’s ideal for standard street-driven applications. |
|
![]() |
Speedmaster PCE226.1003 Compatible with Chevy SBC 383 400 2Pc Rms 168 Tooth 11″ External Balance Heavy Duty Flexplate |
This product is perfect for Chevy SBC 383 or 400 engine builders who need a strong, reliable flexplate for high-performance or heavy-duty use. Track Proven durability and a 12-month warranty make it ideal for racers, mechanics, or DIYers seeking long-lasting parts. |
|
![]() |
SFI Small Block for Chevy 383/400 External Balance Flexplate 168 Tooth Bolts |
This SFI Small Block Flexplate is perfect for car enthusiasts and professional mechanics who need a reliable, high-performance part for their Chevy 383/400 engine. It’s easy to install and works great for upgrading or replacing old parts. |
|
![]() |
Speedway Motors 1955-1985 Chevy Flexplate for 2-Piece Rear Main, 168 Tooth – Perfect for Engine/Transmission Installations – Small Block Chevy – Non SFI Rated |
This flexplate is perfect for car enthusiasts and mechanics working on Small Block Chevy engines. It’s ideal for engine or transmission installations, offering smooth operation and easy fitment. |
|
![]() |
SFI Small Block for Chevy 383/400 External Balance Flexplate 168 Tooth Bolts |
This SFI Small Block Flexplate is perfect for car enthusiasts and mechanics who want high-performance efficiency. It’s ideal for upgrading Chevy 383/400 engines. |
|
![]() |
JEGS Heavy-Duty Mini Starter | Hitachi-Style | for Small Block and Big Block Chevy Engines | Fits 153 and 168 Tooth Flexplates/Flywheels | Made in USA | Cranks Up to 16:1 Compression |
This JEGS Heavy-Duty Mini Starter is perfect for car enthusiasts and mechanics who need a reliable starter for their Chevy engines. It’s lightweight, powerful, and made in the USA, making it ideal for high-performance builds. |
Detailed Reviews
Discover the top 6 flexplates for your Chevy 383/400 engine, handpicked for performance and reliability. Each product is expert-reviewed and backed by customer feedback, ensuring you get the best value. Whether you need durability, smooth operation, or easy installation, this guide has you covered. Find the perfect flexplate to upgrade your ride and keep your engine running strong and efficient.
1. Speedway Motors Flexplate 168 Tooth Compatible with Chevy Small Block 400 Engine Two Piece Rear Main Seal External Balance Dual Bolt Pattern Non SFI

The Speedway Motors Flexplate is designed for Chevy small block 400 engines. It works with two-piece rear main seals. This flexplate has a 168-tooth ring gear for smooth starter operation.
It features dual bolt patterns for easy transmission fit. Built for street-driven use, it’s non-SFI rated and recommended for new engine or transmission installs.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This flexplate is perfect for car enthusiasts who want to upgrade their Chevy small block 400 engine. It’s ideal for standard street-driven applications.
Ready to Purchase?
2. Speedmaster PCE226.1003 Compatible with Chevy SBC 383 400 2Pc Rms 168 Tooth 11″ External Balance Heavy Duty Flexplate

Speedmaster PCE226.1003 fits Chevy SBC 383/400 engines. It has a 168-tooth design for strong power transfer. The 11″ external balance and two-piece RMS build ensures durability.
This heavy-duty flexplate is proven on tracks and roads. A 12-Month Limited Worldwide Warranty covers all buyers.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This product is perfect for Chevy SBC 383 or 400 engine builders who need a strong, reliable flexplate for high-performance or heavy-duty use. Track Proven durability and a 12-month warranty make it ideal for racers, mechanics, or DIYers seeking long-lasting parts.
Ready to Purchase?
3. SFI Small Block for Chevy 383/400 External Balance Flexplate 168 Tooth Bolts

Upgrade your Chevy’s performance with the SFI Small Block Flexplate. This 168-tooth bolt kit is designed for Chevy 383/400 engines.
High-performance efficiency ensures maximum power without sacrificing quality. It’s a versatile replacement for various applications. Always check compatibility before buying.
Package includes one flexplate with bolts. Use Ctrl + F to find your model. Contact us for compatibility advice within 24 hours.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This SFI Small Block Flexplate is perfect for car enthusiasts and professional mechanics who need a reliable, high-performance part for their Chevy 383/400 engine. It’s easy to install and works great for upgrading or replacing old parts.
Ready to Purchase?
4. Speedway Motors 1955-1985 Chevy Flexplate for 2-Piece Rear Main, 168 Tooth – Perfect for Engine/Transmission Installations – Small Block Chevy – Non SFI Rated

The Speedway Motors Flexplate is a must-have for Chevy engine enthusiasts. It fits Small Block Chevy engines with a two-piece rear main seal. This part is perfect for engine or transmission upgrades.
It has 168 teeth for smooth performance. The dual bolt patterns offer flexibility for your project.
This flexplate is a reliable choice for your Chevy. It ensures a precise fit with its key dimensions. Upgrade your ride with this high-quality part.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This flexplate is perfect for car enthusiasts and mechanics working on Small Block Chevy engines. It’s ideal for engine or transmission installations, offering smooth operation and easy fitment.
Ready to Purchase?
5. SFI Small Block for Chevy 383/400 External Balance Flexplate 168 Tooth Bolts

Upgrade your Chevy’s performance with the SFI Small Block for Chevy 383/400 External Balance Flexplate. This high-quality part ensures your engine runs smoothly and efficiently.
Engineered for maximum efficiency, this flexplate delivers exceptional performance without sacrificing quality. It’s a versatile replacement perfect for various applications.
Package includes: 1x flexplate with 168-tooth bolts. Easy to install, built to last.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This SFI Small Block Flexplate is perfect for car enthusiasts and mechanics who want high-performance efficiency. It’s ideal for upgrading Chevy 383/400 engines.
Ready to Purchase?
6. JEGS Heavy-Duty Mini Starter | Hitachi-Style | for Small Block and Big Block Chevy Engines | Fits 153 and 168 Tooth Flexplates/Flywheels | Made in USA | Cranks Up to 16:1 Compression

The JEGS Heavy-Duty Mini Starter is a powerful and reliable choice for your Chevy engine. It’s made in the USA with high-quality parts, ensuring long-lasting performance.
This starter fits small and big block Chevy engines like the 350 and 454. It works with 153 and 168 tooth flywheels and handles engines with up to 16:1 compression.
At just 11.25 lbs, it’s lighter than factory starters, making it a great upgrade. Its Hitachi-style design ensures easy installation and dependable cranking power.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This JEGS Heavy-Duty Mini Starter is perfect for car enthusiasts and mechanics who need a reliable starter for their Chevy engines. It’s lightweight, powerful, and made in the USA, making it ideal for high-performance builds.
Ready to Purchase?
Buying Guide
Flexplates are key parts for Chevy 383/400 engines. They transfer power smoothly and help starters work well. Picking the right one boosts your engine’s performance and reliability.
Factors to Consider When Buying Flexplates:
– Tooth Count: 168-tooth designs are popular for Chevy 383/400 engines. They ensure smooth starter engagement and reliable power transfer.
– Bolt Pattern: Dual bolt patterns make fitting transmissions easier. Check if it matches your engine and transmission setup.
– Balance Type: External balance flexplates keep your engine running smoothly. They’re essential for high-performance engines.
– Material and Build: Heavy-duty materials handle high-performance demands. Look for track-tested brands like Speedway Motors and Speedmaster.
– SFI Rating: SFI-rated flexplates are safer for racing. Non-SFI options are fine for street use but check your needs.
– Compatibility: Always verify compatibility with your engine and transmission. Use Ctrl + F or contact the seller for help.
– Warranty: A warranty adds peace of mind. Brands like Speedmaster offer 12-month coverage.
– Ease of Installation: Dual bolt patterns and clear instructions make installation easier. Some kits include bolts for quick setup.
Engaging Experience:
Choosing the right flexplate feels like unlocking your engine’s full potential. With smooth power transfer and strong starter engagement, your Chevy 383/400 will run like a dream. Whether you’re upgrading or replacing, these top picks ensure reliability and performance.