Swapping out a 700r4 transmission can seriously boost your ride’s performance, but getting the lockup torque converter working right is key. Without a proper lockup kit, you’re missing out on fuel efficiency and potentially adding extra wear and tear on your transmission. It’s like having a high-performance engine but forgetting to change the oil – you’re not getting the full benefit and might be causing long-term harm. I’ve seen this happen firsthand with a buddy’s project car, so I know how important it is to get it right. So, I’ve compiled a list of some top-notch 700r4 lockup kits to help you make the right choice.
Here’s a quick look at the top picks:
- Painless Wiring 60107 Lock-Up Kit: Easiest install, great for beginners.
- TCI 376600 Lockup Wiring Kit: Offers good control, adjustable vacuum switch.
- B&M 70244 Lock-Up Control Kit: Reliable, street-strip performance.
- Hughes Performance HP3707 Lockup Kit: Heavy-duty applications, high stall converters.
- Summit Racing SUM-700210 Lockup Kit: Budget friendly, basic functionality.
Top 5 Best 700r4 Lockup Kit Reviews
1. Painless Wiring 60107 Lock-Up Kit
The Painless Wiring 60107 kit is designed for simplicity. It’s a straightforward, easy-to-install option that’s perfect if you’re not super experienced with wiring. This kit gets the job done without a lot of fuss.
Pros:
- ✅ Very easy installation.
- ✅ Clear instructions included.
- ✅ Good for basic street use.
Cons:
- ❌ No adjustability.
- ❌ Basic functionality.
- ❌ May not be suitable for high-performance applications.
Verdict: Best for those who want a simple, no-frills solution for getting their 700r4 torque converter locked up without a complicated install.
2. TCI 376600 Lockup Wiring Kit
The TCI 376600 kit is a step up in terms of control. It includes a vacuum switch that allows for some adjustability, so you can fine-tune when the torque converter locks up. This gives you better fuel economy and performance.
Pros:
- ✅ Adjustable vacuum switch for precise control.
- ✅ Improved fuel economy.
- ✅ Relatively easy to install.
Cons:
- ❌ Vacuum switch can be finicky to adjust.
- ❌ May require some tuning knowledge.
- ❌ Wiring might be a bit more involved than the Painless kit.
Verdict: A good choice if you want some adjustability and are comfortable with a bit more involved installation process.
3. B&M 70244 Lock-Up Control Kit
B&M is a trusted name in the performance transmission world, and the 70244 lock-up kit lives up to that reputation. It’s built for street and strip use, offering a balance of reliability and performance. I’ve used B&M shifters before and they always delivered.
Pros:
- ✅ Reputable brand known for quality.
- ✅ Durable and reliable.
- ✅ Suitable for both street and mild performance applications.
Cons:
- ❌ Can be slightly more expensive.
- ❌ Installation may require some mechanical knowledge.
- ❌ Not ideal for extreme performance setups.
Verdict: Perfect for those who want a reliable kit from a well-known brand for a vehicle that sees both street and occasional strip use.
4. Hughes Performance HP3707 Lockup Kit
If you’re running a high-stall converter or a more aggressive setup, the Hughes Performance HP3707 is worth considering. This kit is designed for heavy-duty applications and can handle the demands of a performance transmission. I remember a friend using this on his drag car and he swore by it.
Pros:
- ✅ Designed for high-stall converters.
- ✅ Heavy-duty construction.
- ✅ Handles high-performance applications well.
Cons:
- ❌ Higher price point.
- ❌ More complex installation.
- ❌ Might be overkill for a stock or mild setup.
Verdict: Best for those with performance-built transmissions or high-stall converters who need a kit that can handle the extra stress.
5. Summit Racing SUM-700210 Lockup Kit
For those on a budget, the Summit Racing SUM-700210 lockup kit offers basic functionality at an affordable price. It’s a simple kit that gets the job done without breaking the bank. It’s a solid choice if you’re looking for an economical solution.
Pros:
- ✅ Budget-friendly.
- ✅ Simple and functional.
- ✅ Easy to install.
Cons:
- ❌ Limited features.
- ❌ May not be as durable as other options.
- ❌ Not suitable for high-performance applications.
Verdict: Ideal for those who need a basic, inexpensive lockup kit for a daily driver or a budget build.
Buying Guide
Choosing the right 700r4 lockup kit involves a few key considerations. Think about these points to make the best choice for your needs:
- Ease of Installation: Are you comfortable with wiring? If not, a simpler kit like the Painless Wiring option is best.
- Application: Is your car a daily driver, a weekend warrior, or a full-blown race car? Match the kit to your intended use.
- Adjustability: Do you want to fine-tune when the torque converter locks up? If so, look for a kit with an adjustable vacuum switch.
- Budget: Lockup kits range in price. Determine how much you’re willing to spend before you start shopping.
- Converter Stall Speed: If you have a high stall converter, you’ll need a kit that can handle it, like the Hughes Performance option.
Also, read customer reviews and see what other users are saying about their experiences with different kits. This can provide valuable insights and help you avoid potential pitfalls.
FAQs
Q: What does a 700r4 lockup kit do?
A: It allows the torque converter in your 700r4 transmission to lock up, creating a direct mechanical connection between the engine and transmission. This improves fuel economy and reduces heat buildup.
Q: Do I need a lockup kit for my 700r4 transmission?
A: If you want to maximize fuel efficiency and reduce wear on your transmission, then yes, a lockup kit is highly recommended.
Q: Can I install a lockup kit myself?
A: It depends on your mechanical skills and the complexity of the kit. Some kits are very easy to install, while others require more advanced wiring knowledge. When in doubt, consult a professional.
Q: Will a lockup kit improve performance?
A: While the primary benefit is fuel economy, a lockup kit can also improve performance by eliminating slippage in the torque converter, resulting in more efficient power transfer.
Conclusion
Choosing the right 700r4 lockup kit can make a noticeable difference in your vehicle’s performance and fuel efficiency. Whether you’re looking for a simple, straightforward solution or a more adjustable, high-performance option, there’s a kit out there to suit your needs. Consider your budget, your mechanical skills, and the intended use of your vehicle when making your decision. With the right kit, you’ll be enjoying the benefits of a properly functioning 700r4 transmission in no time.
This site contains affiliate links. As an Amazon Associate, I earn from qualifying purchases. This means if you click on a link and buy a product, we may receive a small commission at no extra cost to you.
