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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
4.5 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 5
Love it
Size: 1000 Teaspoons
Hakia, love.It still have a quite a bit
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
★★★★★ 5
Strong and Durable, Great for Large Garbage Cans
Scent: Unscented, Size: 50 Count (Pack of 1)
I’ve got a large garbage can for a big family, and in the past, every other brand of bag I tried would always slip down when filling it, turning trash day into a messy nightmare. I finally decided to look for a heavy-duty, extra-large bag and found these 30-gallon Glad bags—and I’m glad I did.
I even tested three different brands to see which one I liked best, and these came out on top by far. They’re rip-resistant, strong, and extra roomy, making them perfect for a busy household. Even if they’re a little more expensive than other bags, the durability and reliability make them totally worth the extra cost. No more wrestling with sagging trash bags!
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Reviewed in the United States on February 10, 2026
★★★★★ 5
Been Using These for Years
Scent: Unscented, Size: 50 Count (Pack of 1)
I have been using these Glad 30 gallon ForceFlex trash bags for years and they never disappoint. The black color looks clean, they are thick and strong, and the unscented option is perfect if you do not want artificial smells. They hold up well with heavy trash, resist leaks, and the drawstrings make them easy to tie and carry. Great quality and worth the price.
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Reviewed in the United States on January 24, 2026
★★★★★ 5
Holds up really well in my house!
Scent: Unscented, Size: 50 Count (Pack of 1)
Good trash bags. They hold up really well and do not tear like most trash bags do. Would recommend. Do not notice a strong scent to them either.
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Reviewed in the United States on April 3, 2026
★★★★★ 5
still the best
Scent: Unscented, Size: 50 Count (Pack of 1)
Update from after they changed the bags to the two layer bags.
I was alerted by another customer that the bags on the page changed, and she scared me away from trying the new version so much I bought the Hefty bags. Well, I am back. I did not like those, they are stiff, but they slash through easy and I did not like the smell. I looked again into glad bags, and realized that they did not get thinner. They are now two layers. Each of the two is thinner, but together they make for a stronger bag. It works just like when the cashier at the grocery store double-bags your heavy milk cartons.
I used up a smaller box of this new dual defense variety and went back on amazon to buy the bigger box. They work the same as the old ones. They are strong and do not rip under normal conditions. I like how stretchy they are. The outside layer is white, inside layer is black. The bags look gray from the outside as the black shows from under the white. It looks black from the inside, and you cannot see gray when it is in the garbage can in the kitchen.
Original review:
Those are my favorite bags. I use them in my regular size kitchen garbage can, because it is black and I do not like how white bags show when used inside of trash cans. And I do not like to use clear bags - who wants to see the garbage? So, black it is. I like that the bags are bigger than the can since I never have any problems closing the bags and can fit a pizza box or something extra that would not fit into the can and waits for its turn behind the can.
Forceflex bags are truly tough, they can stretch around items instead of tearing, and the red ribbon inside is thick and attached securely, too, so it stays where it supposed to be, and I do not get any nasty surprises on my way to the outside bin, and my trash collectors never have to pick up fallen garbage from the road, too.
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Reviewed in the United States on April 7, 2015