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Description
Edelbrock Pro Flo 4 XT EFI System Seq Port BBC Rect Port Std Deck 625 Max HP 35lb/hr Black FinishThe Edelbrock part # 35873 Pro Flo 4 XT Sequential Port EFI System for Big Block Chevy Rectangle Port engines has the latest in technology and features. The EFI system comes complete with a black finish Pro Flo XT intake manifold and 35 Lb Hr injectors capable of 550 HP with 58 p. s. i. fuel pressure. Also included is a plug and play single connection distributor designed to work specifically with Pro Flo 4 and a made in the USA fully terminated high
The Edelbrock part # 35873 Pro-Flo 4 XT Sequential Port EFI System for Big-Block Chevy Rectangle Port engines has the latest in technology and features. The EFI system comes complete with a black finish Pro-Flo XT intake manifold and 35 Lb/Hr injectors capable of 550 HP with 58 p.s.i. fuel pressure. Also included is a plug and play single connection distributor designed to work specifically with Pro-Flo 4 and a made in the USA fully terminated high-quality harness with clearly labeled connections for a hassle-free installation. The new Pro-Flo 4 EFI systems feature an all-new ECU with a faster processor; a water proof design and is half the depth of the previous ECU. It also has an upgraded Bluetooth chip that is faster; more reliable and will not drop connection. We ve added more features for the advanced tuner giving you control over air-fuel ratios; ignition curve; idle speed; acceleration fuel; coolant fans; Rev limiter while retaining the simplicity Pro-Flo is known for. The key to the system is our exclusive E-Tuner 4 app with dyno developed base calibrations. The E-Tuner 4 app uses a Bluetooth wireless connection to communicate with the ECU s self-learning capability to continually adjust the calibration to get maximum performance. E-Tuner 4 features a simple and easy to use setup wizard to help you get started. Best of all; the E-Tuner 4 app is free and can be downloaded from the Google Play Store; allowing you to use an Android based smart phone or tablet. If you don t have a compatible device; then we also offer kits that include a 7in. Android tablet with the E-Tuner 4 app pre-installed. Multiple dash displays are included to allow you to monitor engine vitals from an Android smart phone or tablet. Pro-Flo 4 does not require laptop tuning.
- New ECU Preloaded w/80 Dyno-Tuned Calibrations
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1965-1975 | Chevrolet | Bel Air | Base |
| 1965-1972 | Chevrolet | Biscayne | Base |
| 1973-1974 | Chevrolet | Blazer | Base |
| 1969-1972 | Chevrolet | Brookwood | Base |
| 1978-1980 | Chevrolet | C10 | Big Ten |
| 1975-1980 | Chevrolet | C10 | Cheyenne |
| 1975-1980 | Chevrolet | C10 | Custom Deluxe |
| 1975-1980 | Chevrolet | C10 | Scottsdale |
| 1975-1980 | Chevrolet | C10 | Silverado |
| 1968-1974 | Chevrolet | C10 Pickup | Base |
| 1968-1974 | Chevrolet | C10 Suburban | Base |
| 1975-1980 | Chevrolet | C10 Suburban | Custom Deluxe |
| 1975-1980 | Chevrolet | C10 Suburban | Scottsdale |
| 1975-1980 | Chevrolet | C10 Suburban | Silverado |
| 1990-1993 | Chevrolet | C1500 | 454 SS |
| 1990-1992 | Chevrolet | C1500 | Cheyenne |
| 1990 | Chevrolet | C1500 | Scottsdale |
| 1990-1992 | Chevrolet | C1500 | Silverado |
| 1990-1992 | Chevrolet | C1500 | WT |
| 1975-1981 | Chevrolet | C20 | Cheyenne |
| 1981-1986 | Chevrolet | C20 | Custom |
| 1975-1980 | Chevrolet | C20 | Custom Deluxe |
| 1981 | Chevrolet | C20 | Deluxe |
| 1975-1986 | Chevrolet | C20 | Scottsdale |
| 1975-1986 | Chevrolet | C20 | Silverado |
| 1968-1974 | Chevrolet | C20 Pickup | Base |
| 1968-1974 | Chevrolet | C20 Suburban | Base |
| 1981-1986 | Chevrolet | C20 Suburban | Custom |
| 1975-1980 | Chevrolet | C20 Suburban | Custom Deluxe |
| 1981 | Chevrolet | C20 Suburban | Deluxe |
| 1975-1980,1982,1984-1986 | Chevrolet | C20 Suburban | Scottsdale |
| 1975-1977,1979-1980,1982-1986 | Chevrolet | C20 Suburban | Silverado |
| 1994-1995 | Chevrolet | C2500 | Base |
| 1991-1995 | Chevrolet | C2500 | Cheyenne |
| 1991-1992 | Chevrolet | C2500 | Scottsdale |
| 1991-1995 | Chevrolet | C2500 | Silverado |
| 1994-1995 | Chevrolet | C2500 | WT |
| 1992-1995 | Chevrolet | C2500 Suburban | Base |
| 1995 | Chevrolet | C2500 Suburban | LS |
| 1995 | Chevrolet | C2500 Suburban | LT |
| 1992-1994 | Chevrolet | C2500 Suburban | Silverado |
| 1975-1981 | Chevrolet | C30 | Cheyenne |
| 1981-1986 | Chevrolet | C30 | Custom |
| 1975-1980 | Chevrolet | C30 | Custom Deluxe |
| 1981 | Chevrolet | C30 | Deluxe |
| 1975-1986 | Chevrolet | C30 | Scottsdale |
| 1975-1986 | Chevrolet | C30 | Silverado |
| 1968-1974 | Chevrolet | C30 Pickup | Base |
| 1994-1995 | Chevrolet | C3500 | Base |
| 1988-1995 | Chevrolet | C3500 | Cheyenne |
| 1988-1992 | Chevrolet | C3500 | Scottsdale |
| 1988-1995 | Chevrolet | C3500 | Silverado |
| 1967,1969,1971-1972 | Chevrolet | Camaro | Base |
| 1967,1969 | Chevrolet | Camaro | RS |
| 1967-1972 | Chevrolet | Camaro | SS |
| 1972 | Chevrolet | Camaro | Z28 |
| 1966-1972 | Chevrolet | Caprice | Base |
| 1973-1976 | Chevrolet | Caprice | Classic |
| 1976 | Chevrolet | Caprice | Classic Estate |
| 1976 | Chevrolet | Caprice | Classic Landau |
| 1975-1976 | Chevrolet | Caprice | Classic Sport |
| 1973-1974 | Chevrolet | Caprice | Estate |
| 1975 | Chevrolet | Caprice | Estate Wagon |
| 1965-1966,1968 | Chevrolet | Chevelle | 300 |
| 1967-1969 | Chevrolet | Chevelle | 300 Deluxe |
| 1970-1972 | Chevrolet | Chevelle | Base |
| 1967-1972 | Chevrolet | Chevelle | Concours |
| 1969-1972 | Chevrolet | Chevelle | Concours Estate |
| 1973 | Chevrolet | Chevelle | Deluxe |
| 1969-1972 | Chevrolet | Chevelle | Greenbrier |
| 1973 | Chevrolet | Chevelle | Laguna |
| 1973 | Chevrolet | Chevelle | Laguna Estate |
| 1974-1975 | Chevrolet | Chevelle | Laguna Type S-3 |
| 1965-1974 | Chevrolet | Chevelle | Malibu |
| 1974-1975 | Chevrolet | Chevelle | Malibu Classic |
| 1974 | Chevrolet | Chevelle | Malibu Classic Estate |
| 1973 | Chevrolet | Chevelle | Malibu Estate |
| 1965 | Chevrolet | Chevelle | Malibu Super Sport |
| 1968-1972 | Chevrolet | Chevelle | Nomad |
| 1971-1972 | Chevrolet | Chevelle | SS |
| 1967-1970 | Chevrolet | Chevelle | SS 396 |
| 1966 | Chevrolet | Chevelle | Super Sport 396 |
| 1968 | Chevrolet | Chevy II | Nova |
| 1965-1974 | Chevrolet | Corvette | Base |
| 1966-1975 | Chevrolet | El Camino | Base |
| 1968-1974 | Chevrolet | El Camino | Custom |
| 1968-1974 | Chevrolet | El Camino | SS |
| 1969-1970 | Chevrolet | Estate | Base |
| 1973-1974 | Chevrolet | G10 Van | Base |
| 1976 | Chevrolet | G20 | Beauville |
| 1976 | Chevrolet | G20 | Chevy Van |
| 1973-1974 | Chevrolet | G20 Van | Base |
| 1973-1974 | Chevrolet | G20 Van | Sportvan |
| 1975-1976,1988-1996 | Chevrolet | G30 | Beauville |
| 1975-1976,1988-1996 | Chevrolet | G30 | Chevy Van |
| 1975-1976,1988-1996 | Chevrolet | G30 | Hi-Cube |
| 1988-1996 | Chevrolet | G30 | Sportvan |
| 1973-1974 | Chevrolet | G30 Van | Base |
| 1965-1976 | Chevrolet | Impala | Base |
| 1975-1976 | Chevrolet | Impala | Custom |
| 1976 | Chevrolet | Impala | Custom Landau |
| 1976 | Chevrolet | Impala | S |
| 1975-1976 | Chevrolet | Impala | Sport |
| 1965-1967 | Chevrolet | Impala | SS |
| 1976,1979-1980 | Chevrolet | K10 | Cheyenne |
| 1976,1979-1980 | Chevrolet | K10 | Custom Deluxe |
| 1976,1979-1980 | Chevrolet | K10 | Scottsdale |
| 1976,1979-1980 | Chevrolet | K10 | Silverado |
| 1968-1974 | Chevrolet | K10 Pickup | Base |
| 1968-1974 | Chevrolet | K10 Suburban | Base |
| 1976-1978,1980 | Chevrolet | K20 | Cheyenne |
| 1976-1978,1980 | Chevrolet | K20 | Custom Deluxe |
| 1976-1978,1980 | Chevrolet | K20 | Scottsdale |
| 1976-1978,1980 | Chevrolet | K20 | Silverado |
| 1968-1974 | Chevrolet | K20 Pickup | Base |
| 1968-1974 | Chevrolet | K20 Suburban | Base |
| 1985 | Chevrolet | K20 Suburban | Custom |
| 1985 | Chevrolet | K20 Suburban | Scottsdale |
| 1985 | Chevrolet | K20 Suburban | Silverado |
| 1994-1995 | Chevrolet | K2500 | Base |
| 1991-1995 | Chevrolet | K2500 | Cheyenne |
| 1991-1992 | Chevrolet | K2500 | Scottsdale |
| 1991-1995 | Chevrolet | K2500 | Silverado |
| 1994-1995 | Chevrolet | K2500 | WT |
| 1992-1995 | Chevrolet | K2500 Suburban | Base |
| 1995 | Chevrolet | K2500 Suburban | LS |
| 1995 | Chevrolet | K2500 Suburban | LT |
| 1992-1994 | Chevrolet | K2500 Suburban | Silverado |
| 1977,1980-1981 | Chevrolet | K30 | Cheyenne |
| 1981-1986 | Chevrolet | K30 | Custom |
| 1977,1980 | Chevrolet | K30 | Custom Deluxe |
| 1981 | Chevrolet | K30 | Deluxe |
| 1977,1980-1986 | Chevrolet | K30 | Scottsdale |
| 1977,1980-1986 | Chevrolet | K30 | Silverado |
| 1968-1974 | Chevrolet | K30 Pickup | Base |
| 1994-1995 | Chevrolet | K3500 | Base |
| 1988-1995 | Chevrolet | K3500 | Cheyenne |
| 1988-1992 | Chevrolet | K3500 | Scottsdale |
| 1988-1995 | Chevrolet | K3500 | Silverado |
| 1976 | Chevrolet | K5 Blazer | Base |
| 1976-1978 | Chevrolet | K5 Blazer | Cheyenne |
| 1977-1978 | Chevrolet | K5 Blazer | Custom Deluxe |
| 1978 | Chevrolet | K5 Blazer | Silverado |
| 1969-1972 | Chevrolet | Kingswood | Base |
| 1969-1972 | Chevrolet | Kingswood | Estate |
| 1970-1974 | Chevrolet | Monte Carlo | Base |
| 1973-1974 | Chevrolet | Monte Carlo | Landau |
| 1973,1975 | Chevrolet | Monte Carlo | S |
| 1969-1972 | Chevrolet | Nova | Base |
| 1973 | Chevrolet | P10 Van | Base |
| 1970-1971,1973 | Chevrolet | P20 Van | Base |
| 1975 | Chevrolet | P30 | Base |
| 1975 | Chevrolet | P30 | Step-Van |
| 1970-1974 | Chevrolet | P30 Van | Base |
| 1988 | Chevrolet | R20 | Cheyenne |
| 1987-1988 | Chevrolet | R20 | Custom Deluxe |
| 1987-1988 | Chevrolet | R20 | Scottsdale |
| 1987-1988 | Chevrolet | R20 | Silverado |
| 1987 | Chevrolet | R20 Suburban | Custom Deluxe |
| 1987-1988 | Chevrolet | R20 Suburban | Scottsdale |
| 1987-1988 | Chevrolet | R20 Suburban | Silverado |
| 1989 | Chevrolet | R2500 | Cheyenne |
| 1989 | Chevrolet | R2500 | Scottsdale |
| 1989 | Chevrolet | R2500 | Silverado |
| 1989-1991 | Chevrolet | R2500 Suburban | Scottsdale |
| 1989-1991 | Chevrolet | R2500 Suburban | Silverado |
| 1988 | Chevrolet | R30 | Cheyenne |
| 1987-1988 | Chevrolet | R30 | Custom Deluxe |
| 1987-1988 | Chevrolet | R30 | Scottsdale |
| 1987-1988 | Chevrolet | R30 | Silverado |
| 1989-1991 | Chevrolet | R3500 | Cheyenne |
| 1989-1990 | Chevrolet | R3500 | Scottsdale |
| 1989-1991 | Chevrolet | R3500 | Silverado |
| 1969-1972 | Chevrolet | Townsman | Base |
| 1987 | Chevrolet | V20 Suburban | Custom Deluxe |
| 1987-1988 | Chevrolet | V20 Suburban | Scottsdale |
| 1987-1988 | Chevrolet | V20 Suburban | Silverado |
| 1990 | Chevrolet | V2500 Suburban | Scottsdale |
| 1990 | Chevrolet | V2500 Suburban | Silverado |
| 1988 | Chevrolet | V30 | Cheyenne |
| 1987-1988 | Chevrolet | V30 | Custom Deluxe |
| 1987-1988 | Chevrolet | V30 | Scottsdale |
| 1987-1988 | Chevrolet | V30 | Silverado |
| 1989-1991 | Chevrolet | V3500 | Cheyenne |
| 1989-1990 | Chevrolet | V3500 | Scottsdale |
| 1989-1991 | Chevrolet | V3500 | Silverado |
| 1975-1978 | GMC | C15 | Base |
| 1977-1978 | GMC | C15 | Heavy Half |
| 1975-1978 | GMC | C15 | High Sierra |
| 1977 | GMC | C15 | Indy Hauler |
| 1975-1978 | GMC | C15 | Sierra Classic |
| 1975-1978 | GMC | C15 | Sierra Grande |
| 1978 | GMC | C15 | Street Coupe |
| 1975-1978 | GMC | C15 Suburban | Base |
| 1975-1978 | GMC | C15 Suburban | High Sierra |
| 1975-1978 | GMC | C15 Suburban | Sierra Classic |
| 1975-1978 | GMC | C15 Suburban | Sierra Grande |
| 1968-1974 | GMC | C15/C1500 Pickup | Base |
| 1968-1974 | GMC | C15/C1500 Suburban | Base |
| 1979-1980 | GMC | C1500 | Base |
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
4.8 ★★★★★
Based on 7 reviews
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Product Reviews
★★★★★ 5
Love this product
Size: 6 Fl Oz (Pack of 2)
Love this product. The only product I would use on my face
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 19, 2026
★★★★★ 5
Not greasy at all
Size: 6 Fl Oz (Pack of 2)
This is my first mineral sunscreen. I love that it is not greasy at all. It's easy to apply, and hasn't caused any irritation to my baby's skin.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2025
★★★★★ 5
Fantastic start up
Truskin products are fantastic in my opinion. Not expensive AND effective.. what more can you ask. This 3 pack with Hyaluronic acid, Retinol, and Vitamin C is perfect. I go through the HA faster than the rest so I end up buying the bigger bottle of it. The Vitamin C serum feels incredible on my skin. It feels more moisturizing than the HA. I love using it- just please don’t forget the SPF. This combo pack is perfect for anyone looking to care for their skin. I don’t notice any off putting odors. They all dry down quickly. My skin has not reacted poorly to any of the products. I do stick to my routine of actives(retinol, vit c, tea tree- rotated)to 3x a week and the other days are gentle cleansing, moisturizer and SPF. Since I have switched my skin care routine to TruSkin, I have noticed better looking skin. I’m moisturized with soft youthful looking skin. Recommend and will be buying more.
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Reviewed in the United States on April 5, 2026
★★★★★ 5
I didn’t expect this to actually work.
I didn’t take a before photo. Because I legit didn’t expect this to do anything to my skin. I’ve used similar serums before with no results. But here I am, spreading the word because I’m a believer.
To describe my skin: aging (mid 40’s), a few wrinkles here and there, nothing insane, very fair, super dry, with an oddly greasy forehead. Minor sun damage, uneven texture and big fat pores that I loathe. Occasional zit here and there. I also have rosacea. It’s the kind of rosacea that turns me bright red when I’m overheated or angry, or if I rub my face too much. It’s doesn’t change the texture or anything, just turns me bright red. My dermatologist prescribed me a cream for it, but warned me that it is the kind of rosacea that is not always easy to treat because it comes from deep under the skin and is situational. The cream was short lived because it dried me out severely.
I recently had a trusted friend who is also an oculoplastics surgeon suggest a good vitamin c serum and retinol. He didn’t suggest a brand, just use of the product. So I went hunting on Amazon. This product had great reviews. I figured I’d invest in the three pack since I also knew Hyaluronic acid was a must.
My first impressions: Shortly after I ordered it, hadn’t yet received, I got an email from the company offering assistance if needed and gratitude for purchasing product. Good to know I had that standing by if needed. Who doesn’t appreciate a business committed to having happy customers?
My first impression for my first uses of the products was positive. Obviously it was too early to see any noticeable changes, but I did like that the serums don’t have smells, they dried very quickly and they’re super easy to rub in. A little goes a long way too. I’m going to reiterate that they don’t smell. Many products say ‘unscented’ but you can still smell something, bad or good. The only one I can mildly smell is the hyaluronic acid and it smells pleasant and clean, but even then, I can barely smell it when I first start rubbing it in. Any smell is gone almost instantly. I can’t describe the smell because by the time my brain realizes I’m smelling something, the smell is already gone. So that’s nice!
My impression now, after using it a while: I love it! My redness is greatly reduced. In addition to my rosacea, my very fair skin can be somewhat translucent in places and kind of reveals the semblance of some blood vessels under my skin. This has minimized them tremendously. My “elevens” are lessened as well. This was a big surprise…that wrinkle, along with some wrinkling around my eyes has noticeably lessened. And I want to reiterate that this is all easily noticeable to me without a before photo. It is hard to notice subtle, gradual changes when we don’t have a photo for before and after comparisons - but I’ve noticed. I introduced another item from another brand, and I think that it’s has helped greatly with my pores but I believe these serums have helped too- my pores are barely visible. I am also very impressed by the texture of my skin. I have ALWAYS struggled with uneven texture. I’ve done all the texture improving techniques, tried the products claiming to improve texture, everything I knew to do, with no real difference. But this- this changed the feel of my facial skin entirely. I bumped my own cheek a couple days ago and actually had to rub my face again to ensure it was MY skin I was feeling. It was like a tactile double take. Why? Because my skin was silky smooth. My makeup wears so much better on my skin. My skin looks noticeably younger and brighter and I haven’t had any new zits either since I started. I cannot express enough how happy I am with these changes and these serums. I truly expected these to be items I ended up not using and simply giving them away. But these are staples now. They are worth every penny and a bargain for the skin changes. I look forward to seeing more improvements in my skin over time and I highly recommend this product to any skeptic like I was.
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Reviewed in the United States on November 12, 2025
★★★★★ 5
Great stuff definitely recommend at least trying
I've been using the TruSkin Vitamin C serum for over a year, and it's done a solid job brightening my complexion and fading dark spots. Finally gave the full Face Serum Trio a shot with the hyaluronic acid and retinol, and after about a month, it's working great, just like the Vitamin C. The hyaluronic acid hydrates my skin well without any grease, and the retinol's knocked down some fine lines, making things smoother and fresher. Layering them has improved the texture and glow noticeably. No irritation on my sensitive skin. Solid value—I picked this up at $26 when it was Prime Day, but even at that $40 price range, it's still worth it in my opinion since it can last a while. Definitely recommend
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Reviewed in the United States on November 1, 2025