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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
4.6 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 5
Great fabric
Number of Items: 5, Color: Black/Sport Grey/Charcoal, Size: Large
The Gildan Men's Crew T-Shirts (Style G1100) are the ultimate essential for anyone seeking a reliable, high-quality basic that holds its own against more expensive brands. These shirts feature a heavyweight cotton construction that provides a structured fit and stays opaque wash after wash, while the taped neck and shoulders ensure the collar and seams remain durable under daily use. With a tag-free design and breathable fabric, they offer a comfortable, irritation-free experience that makes them a perfect "set-it-and-forget-it" staple for any wardrobe.
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Reviewed in the United States on April 19, 2026
★★★★★ 4
Good quality and value for my son!
Number of Items: 5, Color: Black/Sport Grey/Charcoal, Size: Large
I bought the Gildan Men’s Crew T-Shirts multipack on Amazon for my 12-year-old son, who is on the heavier side and thus sometimes difficult to shop for. Pre-teen kids grow fast and go through clothes quickly, so I didn’t want to spend a lot of money on basics he’ll probably outgrow in a year. These shirts are really affordable, especially for a multipack, and the quality is surprisingly good for the price.
The fabric is soft and comfortable, and my son says they feel good to wear all day at school. They’re lightweight and did not shrink after washing. I also like that the shirts don’t get stretched out like some cheaper T-shirts do.
The fit works well for him too. They’re simple, classic crew neck tees that can be worn on their own or layered under hoodies and jackets. We’ve used them for school and just everyday wear.
Another thing I appreciate is that they’re easy to care for. I just toss them in the wash and dryer and they come out looking fine every time.
Overall, these are a great value. If you need affordable, comfortable basic T-shirts for a growing kid (or an adult!), this pack is definitely worth buying.
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Reviewed in the United States on May 17, 2026
★★★★★ 5
Nice
Number of Items: 5, Color: Navy/Charcoal/Cardinal Red, Size: Large
My husband really likes the quality of these t-shirts. They fit nicely and dont have a sagging neckline as some t-shirts tend to have.
The colors are nice and they wash up well.
Not a heavy so comfortable for everyday use whether relaxing, doing yard work etc
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Reviewed in the United States on May 14, 2026
★★★★★ 5
Great t shirts
Number of Items: 5, Color: Navy/Heather Navy/Indigo Blue, Size: Large
Great t shirts. They fit great, and are very comfy as an under shirt or just a solid color shirt. Have washed them multiple times and they still hold up good, don’t wrinkle easy, and colors have stayed nice. The fit is great, can definitely be used for work, gym, whatever, just good comfy shirts
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Good Quality
Number of Items: 5, Color: Navy/Charcoal/Cardinal Red, Size: XX-Large
T-shirt wash well no shrinkage or twisting. Fit is true to size. Very comfortable.
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Reviewed in the United States on May 31, 2026