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Description
1964-1974 Pontiac LeMans Long Tube Headers V8 Black Paint Flowtech 11170FLTOverview: Flowtech headers are the perfect combination of performance and value. Flowtech long tube headers are precision engineered using mandrel bent tubing, formed collectors and 5 16" 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 resistant black paint for a stealthy appearance. Features: Fuel Economy From The Engine Leak Test For Max
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 5/16" 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 resistant black paint for a stealthy appearance.
Features:
- Fuel Economy From The Engine
- Leak Test For Max Performance
- Mandrel-Formed Power Plenum
- Leakproof O-Ringed Port Seals
- Include All Mounting Hardware
- Constructed of .049 cold roll flash mild steel tubing
- Precision engineered for fit, performance and economy
Applications:
- 1970-1974 Pontiac Firebird with 5.7L V8 350 CID Engine
- 1970-1974 Pontiac Firebird with 6.6L V8 400 CID Engine
- 1971-1974 Pontiac Firebird with 7.5L V8 455 CID Engine
- 1973 Pontiac Grand Am with 5.7L V8 350 CID Engine
- 1973-1974 Pontiac Grand Am with 6.6L V8 400 CID Engine
- 1973-1974 Pontiac Grand Am with 7.5L V8 455 CID Engine
- 1964-1966 Pontiac GTO with 6.4L V8 389 CID Engine
- 1968-1973 Pontiac GTO with 6.6L V8 400 CID Engine
- 1970-1973 Pontiac GTO with 7.5L V8 455 CID Engine
- 1964-1967 Pontiac LeMans with 5.3L V8 326 CID Engine
- 1968-1974 Pontiac LeMans with 5.7L V8 350 CID Engine
- 1968-1974 Pontiac LeMans with 6.6L V8 400 CID Engine
- 1970-1974 Pontiac LeMans with 7.5L V8 455 CID Engine
Fitment Notes:
- Pontiac V8 Engines Only!
- Will not fit Firebird/Trans Ams with column shifted standard transmission.
- Must modify stock exhaust to retain catalytic converters.
- Will not fit Ram Air vehicles.
- End holes on head must be drilled and tapped to ensure proper seal.
- Breaking in an engine with ceramic coated headers WILL result in damage to the coating and will VOID all warranties. Ceramic coated headers require several heat cycles to fully cure before they will withstand extreme heat. Flowtech recommend using cast iron exhaust manifolds or old headers to break in new engines to avoid coating damage. The use of header wraps can cause the header tubes to crack or rust due to excessive heat and moisture build-up. Flowtech does not recommend the use of header wraps as this will void the warranty.
Specs:
- Bolt Size: 3/8-16 x 3/4
- Bolts Included: Yes
- Brand: Flowmaster
- CARB (California) Compliant: No
- Catalytic Converter Quantity: 0
- Collector Attachment: 3-Bolt Flange
- Collector Diameter: 3 in
- Collector Port Diameter: 3 in
- Collector Reducer Included: Yes
- Collector Reducer Outlet Diameter: 2.5 in
- Color: Black
- Cylinder Head Flange Thickness: 5/16 in
- Design: Long Tube
- Drive: 2WD
- EGT (Exhaust Gas Temperature) Port: No
- Engine: Pontiac V8
- Finish: Painted
- Flange Thickness: 5/16 in
- Gasket Or Seal Included: Yes
- Grade Type: Performance
- Header Finish: Black Paint
- Header Style: Long Tube
- Main Piping Diameter: 1-5/8 in
- Material: Mild Steel
- Mounting Hardware Included: Yes
- Oxygen Sensor Port: No
- Port Shape: Oval / D Port
- Quantity: Sold as Pair
- Sheen Level: Satin
- Tube Material: Mild Steel
- Part Number: 11170FLT
Emissions:
- This part is legal for sale or use on Racing Use Only Vehicles
- The following vehicles are considered Racing Use Only Vehicles:
- Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street.
- WARNING: It is against the law to install this part on an Emissions Controlled Vehicle
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
4.4 ★★★★★
Based on 26 reviews
Sort
Product Reviews
★★★★★ 5
Love these for super chewers
Flavor Name: REAL Bacon, Size: Large
I have two pit bulls and they destroy everything. These have held up very well for weeks. I use the cups for their morning yogurt and can even use hot water wand soap to wash them out. These are a great value for the money and the dogs love to carry them around in their mouths and even tug o war with them. Highly recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 15, 2026
★★★★★ 3
Good
Flavor Name: REAL Bacon, Size: Medium
Decent product, my dog likes it, except I think it’s made of some kind of plastic
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 3, 2026
★★★★★ 5
My dog loves it
Color: 1 PC-Beef-Red, Color: 1 PC-Beef-Red
The bone arrived today and my dog loves it.
He is a very aggressive chewer and destroyed almost all his toys so far, even toys that were advertised for aggressive chewers unfortunately didn't held out long, the longest so far was a stuffy we couldn't find anymore and that one lasted him a few weeks but everything else lasted him an hour up to a few days max, even bones don't last him long so we have our hopes set on this bone to satisfy his chewing needs.
I will update my review later on sturdiness, since we just got it and I can't review that yet but so far he loves it he has been chewing on it non stop, he already managed to get very small pieces of as shown in picture but with a regular bone he would've already been much much further.
The bone is only 10 bucks so the value for money you get based on my experience so far is amazing! But also for this I will come back later to touch upon more.
The size is good, our boy is a medium sized dog and this bone was advertised for medium to large size dogs and I thinks the size is just right for our boy .
And there is definitely a beef flavor on it you can smell it but it doesn't smell bad it's a nice smell and not very strong but when he is chewing on it you smell it.
I would based on my experience so far definitely recommend this bone but also on this I will touch back upon later if it's worth it in the long run.
So far a very happy dog and owners here.
Edit on May 8th (original review was on March 11th)
He still hasn't managed to destroy it it's the first (cgew)toy he hasn't managed to destroy yet which is very impressive since he managed to destroy the even most toughest things we got for him in a week tops and bones within 1, 2 days tops, so we are very happy and pleased with this bone and will definitely get more later.
He still enjoys chewing on it and leaves our things mostly alone for some reason he just likes stealing my things and chew on it lol.
So 2 months later still stand by recommending this when your dog loves to chew and destroys everything he puts his mouth on.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 11, 2026
★★★★★ 5
Extremely durable, dogs love them
Color: 2 PC-Beef-Red, Color: 2 PC-Beef-Red
I was looking for the toughest and most durable dog chew bone I could find and this is it. I have bought multiple other brands that claim to be very durable and tough for a very long time and this is the one for sure. The shower has described this phone accurately and it truly does last. I purchased this bone about 2 months ago. As you see from the photos attached, this is a very well made chew bone and my aggressive pitbulls can't tear it apart do they try. They never get tired of it and chewing it every single day for hours on and keeping them very occupied. I have two bones and three pitbulls that chew on it every day. It is so adorable and has an awesome flavor to it which I think entices them even more to want to chew on it. The durability and Lasting power is amazing to me with these tough chewers. I highly recommend this product to everyone out there. I will say only one negative and that is that the middle wraparound piece they were able to pull off but that is not a big deal because there is plenty of bone which was under that cover in the middle of the bone. There's a few mauled chips missing from the ends but the life of this bone is obviously going to be a long time which really surprised me. Give it a shot if you have heavy duty chewers and you will find how awesome this phone really is and it's durability and strength our second to none in my opinion.
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Reviewed in the United States on September 5, 2025
★★★★★ 5
My dog loves it.
Color: 1 PC-Beef-Red
My dog is a super aggressive chewer when it comes to toys. Anything that is soft he rips apart. This one has a wonderful squeaky sound that makes him happy and he enjoys the smell of it. This is a very strong material and definitely worth the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026
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