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Description
Edelbrock Pro Flo 4 XT EFI System Seq Port LS Gen III/IV Cathedral Port 550 HP Max 35lb/hr BlackWhen choosing to upgrade your engine to modern fuel injection, look no further than Edelbrock's Pro Flo 4 EFI systems. Edelbrock has been delivering the best combination of dyno proven electronic fuel injection performance for over 40 years. Pro Flo 4 is not just a replacement for your carburetor, it's a complete engineered system that provides the ultimate in performance, drivability and quality. These easy to use, self learning EFI systems feature
When choosing to upgrade your engine to modern fuel injection, look no further than Edelbrock's Pro-Flo 4 EFI systems. Edelbrock has been delivering the best combination of dyno proven electronic fuel injection performance for over 40 years. Pro-Flo 4 is not just a replacement for your carburetor, it's a complete engineered system that provides the ultimate in performance, drivability and quality. These easy to use, self-learning EFI systems feature an all new ECU pre-loaded with 80 dyno-tuned calibrations that support popular engine configurations up to 800 hp. Combined with the enhanced E-Tuner 4 App's easy to use setup wizard; you get plug and play performance without the need of a laptop or costly dyno tuning sessions. Pro-Flo 4 EFI systems are the most complete systems available on the market, giving you what you need to upgrade to powerful and efficient fuel injection for your vehicle. Pro-Flo 4 EFI systems are the best value for your dollar! ** INSTALLATION NOTE: These systems will require a high pressure EFI compatible fuel delivery system. Fuel delivery kits are available and sold separately. LS kits will require a coil harness which is sold separately. 24(x) reluctor applications will require #37-1633 and 58(x) reluctor applications will require #37-1632. #35760/#35770 manifold height: 4.58". #35780 Manifold height: 4.58". #35700/#35710 manifold height: 4.95". #35740/#35750 manifold height: 7.40". #35830/#35840 manifold height: 5.90". #35850/#35860 manifold height: 5.90". #359300 manifold height: 6.30". #335910 manifold height: 6.10". #35930/#35940 manifold height: 6.35". #35950 manifold height: 6.25". #35960 manifold height: 6.49". #35970/#35980 manifold height: 6.60". Throttle body height: 2.25"This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2013 | Chevrolet | Avalanche | Black Diamond LS |
| 2013 | Chevrolet | Avalanche | Black Diamond LT |
| 2013 | Chevrolet | Avalanche | Black Diamond LTZ |
| 2007-2012 | Chevrolet | Avalanche | LS |
| 2007-2012 | Chevrolet | Avalanche | LT |
| 2007-2012 | Chevrolet | Avalanche | LTZ |
| 2002-2005 | Chevrolet | Avalanche 1500 | Base |
| 2005-2006 | Chevrolet | Avalanche 1500 | LS |
| 2005-2006 | Chevrolet | Avalanche 1500 | LT |
| 2002-2003 | Chevrolet | Avalanche 1500 | North Face |
| 2002-2003 | Chevrolet | Avalanche 1500 | On Road Edition |
| 2003 | Chevrolet | Avalanche 1500 | WBH |
| 2004-2006 | Chevrolet | Avalanche 1500 | Z66 |
| 2002-2006 | Chevrolet | Avalanche 1500 | Z71 |
| 1993 | Chevrolet | Camaro | Indianapolis 500 Pace Car |
| 2010-2015,2017-2019 | Chevrolet | Camaro | SS |
| 2014-2015 | Chevrolet | Camaro | Z/28 |
| 1993,1997 | Chevrolet | Camaro | Z28 |
| 2012-2015,2017-2019 | Chevrolet | Camaro | ZL1 |
| 2009-2012 | Chevrolet | Colorado | LT |
| 1994 | Chevrolet | Commercial Chassis | Base |
| 1993 | Chevrolet | Corvette | 40th Anniversary Edition |
| 2013 | Chevrolet | Corvette | 427 |
| 2008 | Chevrolet | Corvette | 427 Limited Edition Z06 |
| 2003 | Chevrolet | Corvette | 50th Anniversary Edition |
| 2003 | Chevrolet | Corvette | 50th Anniversary Edition Pace Car |
| 1992-1994,2001-2013 | Chevrolet | Corvette | Base |
| 2010-2013,2017-2019 | Chevrolet | Corvette | Grand Sport |
| 2015-2019 | Chevrolet | Corvette | Stingray |
| 2001-2004,2006-2013,2015-2019 | Chevrolet | Corvette | Z06 |
| 2011 | Chevrolet | Corvette | Z06 Carbon |
| 2009-2013,2019 | Chevrolet | Corvette | ZR1 |
| 2003-2014 | Chevrolet | Express 1500 | Base |
| 2003-2014 | Chevrolet | Express 1500 | LS |
| 2006-2014 | Chevrolet | Express 1500 | LT |
| 2003-2019 | Chevrolet | Express 2500 | Base |
| 2003-2019 | Chevrolet | Express 2500 | LS |
| 2006-2019 | Chevrolet | Express 2500 | LT |
| 2003-2019 | Chevrolet | Express 3500 | Base |
| 2003-2019 | Chevrolet | Express 3500 | LS |
| 2006-2019 | Chevrolet | Express 3500 | LT |
| 2006-2009 | Chevrolet | Impala | SS |
| 2006-2007 | Chevrolet | Monte Carlo | SS |
| 1999-2005 | Chevrolet | Silverado 1500 | Base |
| 2004-2006,2009-2013 | Chevrolet | Silverado 1500 | Hybrid |
| 1999-2013 | Chevrolet | Silverado 1500 | LS |
| 1999-2013 | Chevrolet | Silverado 1500 | LT |
| 2007-2013 | Chevrolet | Silverado 1500 | LTZ |
| 2003-2006 | Chevrolet | Silverado 1500 | SS |
| 2002-2013 | Chevrolet | Silverado 1500 | WT |
| 2010-2013 | Chevrolet | Silverado 1500 | XFE |
| 2004 | Chevrolet | Silverado 1500 | Z71 |
| 2007 | Chevrolet | Silverado 1500 Classic | Hybrid |
| 2007 | Chevrolet | Silverado 1500 Classic | LS |
| 2007 | Chevrolet | Silverado 1500 Classic | LT |
| 2007 | Chevrolet | Silverado 1500 Classic | SS |
| 2007 | Chevrolet | Silverado 1500 Classic | WT |
| 2005 | Chevrolet | Silverado 1500 HD | Base |
| 2001-2003,2005 | Chevrolet | Silverado 1500 HD | LS |
| 2001-2003,2005-2006 | Chevrolet | Silverado 1500 HD | LT |
| 2007 | Chevrolet | Silverado 1500 HD Classic | LT |
| 1999-2004 | Chevrolet | Silverado 2500 | Base |
| 1999-2004 | Chevrolet | Silverado 2500 | LS |
| 1999-2004 | Chevrolet | Silverado 2500 | LT |
| 2004 | Chevrolet | Silverado 2500 | WT |
| 2001-2005 | Chevrolet | Silverado 2500 HD | Base |
| 2015-2019 | Chevrolet | Silverado 2500 HD | High Country |
| 2001-2006 | Chevrolet | Silverado 2500 HD | LS |
| 2001-2019 | Chevrolet | Silverado 2500 HD | LT |
| 2007-2019 | Chevrolet | Silverado 2500 HD | LTZ |
| 2003-2019 | Chevrolet | Silverado 2500 HD | WT |
| 2007 | Chevrolet | Silverado 2500 HD Classic | LS |
| 2007 | Chevrolet | Silverado 2500 HD Classic | LT |
| 2007 | Chevrolet | Silverado 2500 HD Classic | WT |
| 2001-2005 | Chevrolet | Silverado 3500 | Base |
| 2001-2006 | Chevrolet | Silverado 3500 | LS |
| 2001-2006 | Chevrolet | Silverado 3500 | LT |
| 2004,2006 | Chevrolet | Silverado 3500 | WT |
| 2007 | Chevrolet | Silverado 3500 Classic | LS |
| 2007 | Chevrolet | Silverado 3500 Classic | LT |
| 2007 | Chevrolet | Silverado 3500 Classic | WT |
| 2015-2019 | Chevrolet | Silverado 3500 HD | High Country |
| 2007-2019 | Chevrolet | Silverado 3500 HD | LT |
| 2007-2019 | Chevrolet | Silverado 3500 HD | LTZ |
| 2007-2019 | Chevrolet | Silverado 3500 HD | WT |
| 2014-2017 | Chevrolet | SS | Base |
| 2003-2006 | Chevrolet | SSR | Base |
| 2000-2001,2006 | Chevrolet | Suburban 1500 | Base |
| 2000-2014 | Chevrolet | Suburban 1500 | LS |
| 2000-2014 | Chevrolet | Suburban 1500 | LT |
| 2006-2014 | Chevrolet | Suburban 1500 | LTZ |
| 2004-2007 | Chevrolet | Suburban 1500 | Z71 |
| 2000-2001 | Chevrolet | Suburban 2500 | Base |
| 2000-2013 | Chevrolet | Suburban 2500 | LS |
| 2000-2013 | Chevrolet | Suburban 2500 | LT |
| 2007 | Chevrolet | Suburban 2500 | LTZ |
| 2016-2019 | Chevrolet | Suburban 3500 HD | LS |
| 2016-2019 | Chevrolet | Suburban 3500 HD | LT |
| 2000-2001,2006 | Chevrolet | Tahoe | Base |
| 2010-2013 | Chevrolet | Tahoe | Hybrid |
| 2000-2014 | Chevrolet | Tahoe | LS |
| 2000-2014 | Chevrolet | Tahoe | LT |
| 2007-2014 | Chevrolet | Tahoe | LTZ |
| 2012-2014 | Chevrolet | Tahoe | PPV |
| 2012-2014 | Chevrolet | Tahoe | SSV |
| 2003-2006 | Chevrolet | Tahoe | Z71 |
| 2008 | Chevrolet | Trailblazer | Base |
| 2006-2007 | Chevrolet | Trailblazer | LS |
| 2006-2008 | Chevrolet | Trailblazer | LT |
| 2006-2009 | Chevrolet | Trailblazer | SS |
| 2003-2006 | Chevrolet | Trailblazer EXT | LS |
| 2003-2006 | Chevrolet | Trailblazer EXT | LT |
| 2003-2004 | Chevrolet | Trailblazer EXT | North Face |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 5
Very easy and convenient
Color: White, Size: Queen
Absolutely in love with this pillow case. I have a tendency to let the kids on the bed with snacks and it’s helpful to just be able to take the case off and put it in the washer when it’s dirty
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 11, 2026
★★★★★ 5
Very comfortable and supportive.
I really am quite amazed with these pillows. As with most people who suffer from neck and back pain it's almost impossible to find a comfortable pillow. One year I must have went through 20 sets trying to find the right pillow. I received these and they were flat in the package. All you have to do is take them out and fluff them up a little bit with your hand and let them sit overnight. What's really nice about these is they are soft and cushy but they have a support that does not flatten when you lay down. Of note when I was looking for pillows, I noticed that these had a price of $110 which was crossed out and then a huge discount. Looking at the item now I see that the top price for the king size is $42. So I'm going to say that $110 was a comparison of what a good pillow might cost. I do want you to know that a set of pillows that I had been using were $200 a piece and these are very comparable to that. I am not having any issues overheating with these as I have a very nice cover on them. They are washable. My neck feels totally better. So all in all I am quite impressed with these pillows and very surprised that the first set I ordered is working perfectly for me. I am a side sleeper and needed my neck to be straight and these do the job with a nice little cushion on them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
★★★★★ 5
The BEST pillow you will ever sleep on!!
The BEST pillow you will ever purchase!! Right amount of firmness and support yet soft!! Quite the sleep enhancer!!
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Reviewed in the United States on May 27, 2026
★★★★★ 1
FLAT
Flat as a pancake. No support. No fluff. very incomfortable. Returning,
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Reviewed in the United States on May 1, 2026
★★★★★ 3
Get their newer version. These were too flat.
Really thin/flat pillows
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Reviewed in the United States on May 11, 2026
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