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Description
Flowtech 31100FLT SBC Small Block Chevy 350 Long Tube Header, Ceramic CoatedOverview: Flowtech headers are the perfect combination of performance and value. Flowtech long tube headers are precision engineered using mandrel bent tubing, formed collectors and 3 8" flanges with sealing rings for a leak free seal. All mounting hardware and gaskets are included for a simple installation. This header is coated in a high heat and corrosion resistant metallic ceramic thermal coating that increases exhaust velocity and reduces
Overview:
Flowtech headers are the perfect combination of performance and value. Flowtech long tube headers are precision engineered using mandrel bent tubing, formed collectors and 3/8" flanges with sealing rings for a leak-free seal. All mounting hardware and gaskets are included for a simple installation. This header is coated in a high heat and corrosion resistant metallic ceramic thermal coating that increases exhaust velocity and reduces underhood temps for increased performance.
Features:
- Tuned-length primary tubes for street performance
- Mandrel-bent tubing for smooth exhaust flow
- Light weight & sturdy 16 gauge tubing
- Mandrel-formed Power Plenum collector for low back pressure
- Sturdy, leak-tested O-Ring port seals
- Engineered for a precision fit
- Designed for easy, trouble-free installation
- Includes all mounting hardware and premium gaskets
- Works with factory power steering and power brakes
Fitment Notes:
- Works with factory power steering and power brakes
- Will NOT fit 67-69 Camaro with Air Conditioning
- Will NOT fit with angle plug heads or raised port heads
- Factory motor mounts must be used for proper engine placement
- Does NOT fit with manual transmission on Monte Carlo and late model passenger wagons
- Must modify exhaust to retain cat. conv.
- 68-74 Chevy II/Nova will NOT fit with A.I.R. injection pump
Applications:
| Year | Make | Model | Engine | Fitment Notes |
| 1973-1974 | Buick | Apollo | 5.7L V8 350 CID | Please See Above! |
| 1965-1967 | Buick | Gran Sport | Small Block Chevy Swap | Please See Above! |
| 1970-1972 | Buick | GS | 5.7L V8 350 CID | Please See Above! |
| 1968-1969 | Buick | GS 350 | 5.7L V8 350 CID | Please See Above! |
| 1968-1969 | Buick | GS 400 | Small Block Chevy Swap | Please See Above! |
| 1970-1972 | Buick | GS 455 | Small Block Chevy Swap | Please See Above! |
| 1968-1972 | Buick | Skylark | 5.7L V8 350 CID | Please See Above! |
| 1968-1969 | Buick | Special | 5.7L V8 350 CID | Please See Above! |
| 1968-1972 | Buick | Sportwagon | 5.7L V8 350 CID | Please See Above! |
| 1967-1969 | Chevrolet | Camaro | 4.9L V8 302 CID | Please See Above! |
| 1969-1973 | Chevrolet | Camaro | 5.0L V8 307 CID | Please See Above! |
| 1967-1969 | Chevrolet | Camaro | 5.3L V8 327 CID | Please See Above! |
| 1968-1969 | Chevrolet | Camaro | 5.4L V8 327 CID | Please See Above! |
| 1967-1974 | Chevrolet | Camaro | 5.7L V8 350 CID | Please See Above! |
| 1968-1972 | Chevrolet | Chevelle | 5.0L V8 307 CID | Please See Above! |
| 1964-1968 | Chevrolet | Chevelle | 5.3L V8 327 CID | Please See Above! |
| 1965 | Chevrolet | Chevelle | 5.4L V8 327 CID | Please See Above! |
| 1967-1968 | Chevrolet | Chevelle | 5.4L V8 327 CID | Please See Above! |
| 1968-1972 | Chevrolet | Chevelle | 5.7L V8 350 CID | Please See Above! |
| 1968-1972 | Chevrolet | El Camino | 5.0L V8 307 CID | Please See Above! |
| 1964-1969 | Chevrolet | El Camino | 5.3L V8 327 CID | Please See Above! |
| 1968 | Chevrolet | El Camino | 5.4L V8 327 CID | Please See Above! |
| 1968-1972 | Chevrolet | El Camino | 5.7L V8 350 CID | Please See Above! |
| 1964-1967 | Chevrolet | Malibu | 5.3L V8 327 CID | Please See Above! |
| 1969-1971 | Chevrolet | Nova | 5.0L V8 307 CID | Please See Above! |
| 1972-1974 | Chevrolet | Nova | 5.7L V8 350 CID | Please See Above! |
| 1971-1972 | GMC | Sprint | 5.0L V8 307 CID | Please See Above! |
| 1971-1972 | GMC | Sprint | 5.7L V8 350 CID | Please See Above! |
| 1964-1971 | Oldsmobile | 442 | Small Block Chevy Swap | Please See Above! |
| 1968-1972 | Oldsmobile | Cutlass | 5.7L V8 350 CID | Please See Above! |
| 1968-1972 | Oldsmobile | Cutlass Supreme | 5.7L V8 350 CID | Please See Above! |
| 1968-1972 | Oldsmobile | F85 | 5.7L V8 350 CID | Please See Above! |
| 1973-1974 | Oldsmobile | Omega | 5.7L V8 350 CID | Please See Above! |
| 1968-1972 | Oldsmobile | Vista Cruiser | 5.7L V8 350 CID | Please See Above! |
| 1968-1971 | Pontiac | Acadian | 5.0L V8 307 CID | Please See Above! |
| 1968 | Pontiac | Acadian | 5.3L V8 327 CID | Please See Above! |
| 1968-1971 | Pontiac | Acadian | 5.7L V8 350 CID | Please See Above! |
| 1964-1967 | Pontiac | Beaumont | 5.3L V8 327 CID | Please See Above! |
| 1964-1972 | Pontiac | GTO | Small Block Chevy Swap | Please See Above! |
| 1968-1972 | Pontiac | LeMans | 5.7L V8 350 CID | Please See Above! |
| 1968-1970 | Pontiac | Tempest | 5.7L V8 350 CID | Please See Above! |
| 1971 | Pontiac | Ventura | 5.0L V8 307 CID | Please See Above! |
| 1972-1974 | Pontiac | Ventura | 5.7L V8 350 CID | Please See Above! |
Specs:
| Brand | Flowtech |
|---|---|
| Collector Diameter | 3.00 inch |
| Emission Code | 4 |
| Engine | Chevrolet Small Block Gen I |
| Header Finish | Silver Ceramic |
| Header Flange Thickness (in) | 3/8 inch |
| Header Style | Long Tube |
| Primary Tube Dia. | 1-5/8 inch |
| Product Type | Headers |
| Tube Material | Mild Steel |
| Part Number | 31100FLT |
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 9 reviews
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Product Reviews
★★★★★ 5
I love this thing!
I can't overstate how much I love this thing! As someone who enjoys a good cigar on the go, I've tried various single cigar cases, but this one is in a league of its own. First, the build quality is outstanding. The aluminum alloy feels incredibly solid and durable in your hand. It's clear this was made to last. I have no doubt that my cigar is perfectly protected from being crushed or damaged when it's in this thing. The convenience factor is a 10/10. It’s sleek, compact, and makes carrying a single cigar effortless.
But it's the brilliant integration of accessories that, for me, truly sets it apart. Having a sharp, reliable punch built right in is fantastic. The built-in hygrometer gives me total peace of mind that my cigar is staying perfectly fresh, and the clever design that allows the top to double as a cigar holder is just plain genius. This tube is the perfect, all-in-one solution for any cigar aficionado who travels or simply likes to be prepared. I'd recommend it to anyone without a moment's hesitation. Five stars all the way!
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Reviewed in the United States on August 28, 2025
★★★★★ 5
Nice light saber handle with some room for a cigar lol
I'll go straight to the point: this cigar tube is great! I really like the material, it's made of thick aluminium and it's design is both classy and nerdy at the same time, it looks like a jedi light saber handle lol
The hygrometer seems to be accurate, close to my other ones, it's a nice extra functionality.
The size of the tube is big enough for my largest cigars, so all good here.
I recommend it, either as a gift to yourself (because you deserve it!), or father's day, or any good occasion!
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Reviewed in the United States on August 20, 2025
★★★★★ 4
does the job!
I bought the DXXULL 4-in-1 Cigar Tube as a gift for my husband, and overall, it’s been a solid choice. He travels often and enjoys cigars, so this compact, all-in-one tube really suits his lifestyle. The aluminum alloy feels sturdy and well-made, and the built-in cigar punch, hygrometer, and holder add a nice touch of convenience. It’s sleek and functional—he’s used it several times already without any issues. While I do think it’s a bit overpriced for its size, the quality and thoughtful design make up for it. If you’re looking for a practical, stylish gift for a cigar lover, this tube does the job well.
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Reviewed in the United States on October 30, 2025
★★★★★ 3
won't fit Churchill length or 60-ring diameter cigars
Color: Gold, Color: Gold
This is a good-looking device, solidly built, with a handy twist-out punch in the top and a humidity gauge in the bottom. The hygrometer is pointless, because there is no way to add anything to actually maintain the humidity, and since I would only use it to bring a cigar to a gathering, it really does not need to maintain that humidity for the 20-minute drive.
What really bugs me about this is the actual useable size. I primarily smoke 2 types of cigars, 54-ring Churchills (which are 7") and 60-ring Gorditos (which are 6"). Although the overall length of this is 8 1/4", the listing never mentions the interior space, which seems to be just under 6 1/2" when closed. My Montecristo sticks out about 1/4" when I insert it, and that does not take into account the 1/4" that the top pushes into when closed (that silver-colored area is solid), thus less than 6 1/2" useable length. Even out of the wrapper, my 60-ring Gorditos sticks when I try to push it in, so I'd have to take off the band(s) to force it in, and it would not slide out very easily, so I would mangle the cigar trying to get it out. So, this can hold a cigar that is 6" or less and maybe 54-ring without the wrapper. Anything else, and you would have to force it in and force it out. So, this unit, while very good looking and well built, does not work for my cigar needs.
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Reviewed in the United States on June 13, 2025
★★★★★ 5
All-in-One Cigar Companion – Perfect for the On-the-Go Enthusiast
The DXXULL 4-in-1 Aluminum Alloy Cigar Tube has quickly become my go-to accessory for enjoying cigars during my golf rounds. This sleek black tube combines multiple functions into one compact design, making it incredibly convenient for travel and daily use.
Key Features:
-Built-in Cigar Punch: The integrated punch cutter is sharp and precise, ensuring a clean cut every time. It's especially handy when I forget my regular cutter.
-Hygrometer: The built-in hygrometer allows me to monitor the humidity levels, ensuring my cigar stays fresh and flavorful.
-Cigar Holder: The tube comfortably holds a single cigar, protecting it from damage while on the move.
-Portable Design: Its compact size makes it easy to carry in my golf bag or pocket, ensuring I always have a cigar ready to enjoy.
The aluminum alloy construction feels sturdy and premium, and the airtight seal keeps my cigar in optimal condition. Whether I'm heading to the golf course or just out for a walk, this tube ensures my cigar is always ready for a relaxing smoke
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Reviewed in the United States on June 17, 2025
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