Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 7 - Jul 12
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
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
4.2 ★★★★★
Based on 1103 reviews
Sort
Product Reviews
★★★★★ 5
Brown skin approved!
Size: 6 Ounce (Pack of 1), Size: 6 Ounce (Pack of 1)
Does not leave a white cast, feels very light on the skin. Scanned on Yuka and was a 86/100 green zone! It’s so hard to find a sunscreen that isn’t trying to poison you, scanned all the sunscreen at Walmart and were rated a 1/100 through 6/100. Which brought me to Amazon. Thinksport has my vote on goodness and healthiness, would buy again!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
★★★★★ 5
My favorite... And I'm picky.
Size: 3 Ounce (Pack of 1)
I've become a little obsessed with sunscreen over the last past 5 years. I have olive skin and developed melasma after my first pregnancy. I learned the hard way that chemical sunscreens don't help if you have melasma - and they actually make the dark spots even worse. Also the active ingredients in chemical sunscreens (like Oxybenzone and Octinoxate) are absorbed by your skin, and may cause allergies, hormonal imbalance and be toxic overtime. After learning that, I started wearing only mineral sunscreen (active ingredient is zinc and/or titanium dioxide). These are not absorbed and works by creating a physical barrier that reflects the sun (some studies suggest that some nanoparticles of zinc may be absorbed by your skin, so to be really, really safe you should look for non-nano particles).
After trying a few brands, I realized the sunscreens with only zinc in their formulas worked better than the blends with titanium dioxide, but this is just my personal preference I guess. And the higher the percentage of zinc, the better.
Most pure mineral sunscreens out there are 10-ish % zinc, SPF 30, 40 min water resistant - which is ok.
Thinksport goes beyond that: It's 20% non-nano zinc, SPF 50+, 80 min water resistant. It really can't get any better than that!
The lotion is not extremely thick when compared to other sunscreens I've tried and I find it pretty easy to apply. As every zinc sunscreen, it does leave a little fine white cast, but honestly Thinksport is not bad at all! It smells nice, lightly citrusy - and the smell vanishes soon. And, it's not overpriced.
Best I've tried so far.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 15, 2016
★★★★★ 3
Works but will Dry Out Your Skin
Size: 6 Ounce (Pack of 1)
I am a swim instructor at an outdoor pool and this stuff DOES work. I can apply it at the beginning of a 5 hour shift and while I have experienced light tanning it has protected against burning completely without reapplication.
The white cast is significant though I don't mind it aesthetically, I know its there for protection . It does rub off on things though so consider yourself warned.
Major Con: it is incredibly drying, and the soap needed to scrub it off is A LOT. That coupled with chlorine is a lot for my skin . Still on my sunscreen journey.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026
★★★★★ 5
I couldn’t put this book down!!
Format: Paperback
I couldn’t put this book down! My daughter & I stayed in a bed-n- breakfast in Lochcarran on our trip to Scotland right before the COVID pandemic. Not only is the story a fun cozy, whodunnit, but I could visualize the geography while reading. I love the Scottish Highlands & Dee describes them perfectly in this book. Can’t wait to read the next book..it should arrive today!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2026
★★★★★ 4
Good book
Format: Audiobook
Book was interesting but had a hard time with the Scottish accent. Plus I have hearing problems so that may have been part of the issue too.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 13, 2025