Upgrading My 351 Windsor to EFI: Need Help with Kits!

Introduction

I’ve been thinking about upgrading my 351 Windsor engine and diving into the world of electronic fuel injection (EFI). I’ve heard that switching from a carburetor to EFI can significantly improve performance and fuel efficiency, but I’m also aware it involves some modifications.

Why EFI?

Transitioning to EFI from a carburetor can have some serious benefits:

  • Improved Fuel Efficiency: EFI systems can manage fuel delivery more precisely than carburetors.
  • Throttle Response: You can enjoy faster throttle response and improved overall drivability.
  • Cold Starts: EFI engines tend to start easier in cold weather conditions.

What to Consider

Before jumping in, here are a few things I think we should consider:

  1. EFI Kit Compatibility: Make sure that any EFI kit we look at is specifically designed for the 351 Windsor.
  2. Modifications Needed: It’s essential to know what parts of the engine may require modifications.
  3. Budget: What costs can we anticipate for kits and any additional components?

Recommended EFI Kits

From my research, I’ve come across a few popular EFI kits:

  • Holley Sniper EFI Kits: Known for their reliability and performance, these kits suit many Windsor applications.
  • Edelbrock Pro-Flo4 EFI System: This system has received good reviews for power gain and ease of installation.

Modifications to Think About

Converting to EFI might require more than just slapping on a new intake:

  • Fuel System Upgrade: You’ll need to upgrade your fuel pump and lines to handle the EFI system requirements.
  • Wiring Harness: Make sure you have the right harness to connect everything together.
  • ECU Management: Some kits will come with an ECU, but if not, we may need to invest in one.

Conclusion

I’m really excited about this project but could definitely use some advice from anyone who has tackled a 351 Windsor EFI conversion. What kits do you recommend or what modifications should I be prepared for? Let’s share our experiences and tips to help each other out!

Looking forward to your thoughts!

Upgrading to EFI can be super rewarding! For a 351 Windsor, you’ll need a complete EFI kit, fuel pump, and appropriate wiring harness. Start by clearing workspace and gathering tools like wrenches and sockets. Safety first! Wear gloves and goggles to avoid any accidents.

Yes! Also, make sure to get an adjustable fuel pressure regulator. It’s a crucial piece for getting the right fuel mixture. Trust me, it saves you from a lot of headaches later!

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I recommend checking out online forums for lessons learned by others who’ve done the upgrade. It can really help you avoid mistakes. Always label your wires during disassembly to ease the reinstallation process. Good luck!

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Great point! I found a YouTube channel with fantastic tutorials on EFI installations. Visuals can really outshine words when trying to understand the process.

Don’t forget about safety precautions! Disconnect your battery before starting any electrical work, and be wary of fuel lines—they can be pressurized. Anyone else have tips on tackling fuel line installation?

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Absolutely! And when installing the fuel pump, make sure it’s positioned correctly to avoid any fuel leaks. It’ll give you peace of mind while you’re driving!

Are you using new wiring for the EFI kit? It’s essential to ensure everything is up to par, or you could end up with shorts or malfunctions. A friend once had a bad experience due to old wiring!

That’s a valid point! I’d also suggest testing connections with a multimeter as you go. Better safe than sorry!

When it comes to tuning post-installation, I’d go with a good performance tuner. It makes a huge difference. Anyone here run an aftermarket tuner with their setup? What’s been your experience?

I run a few tuners, and the performance gains are phenomenal! You’ll definitely notice improved throttle response and fuel efficiency.

Why do people obsess over EFI? My carbureted engine runs just fine! However, I’m genuinely curious about the pros and cons if anyone wants to weigh in.

It’s mostly about consistency and efficiency! Plus, EFI can deliver better power under various conditions. But hey, there’s nothing wrong with a good ol’ carb either! It can be a fun challenge to tune it just right.

I’m considering upgrading my 351 Windsor to EFI too! I’m excited but a bit nervous about the potential hiccups. What should I look out for?

That’s a great decision, gary47! One common issue is wiring errors. Make sure to double-check all connections, or you might end up with a no-start situation.

I’ve heard about issues with fuel pressure after installation. Anyone run into that? How did you solve it?

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Absolutely! You might need a fuel pressure regulator to get that sorted out. Keeping an eye on your fuel pump is crucial too.

Don’t forget to calibrate your ECU after installation! Ignoring that can lead to poor performance and erratic idling.

Good point, christopher30! It’s also a good idea to check for vacuum leaks, which can mess with your EFI setup significantly.

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I have a question about sensor compatibility. Are there specific sensors I need to upgrade when doing the EFI conversion?

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