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1965 Pontiac LeMans
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May Promo 1965 Pontiac LeMans Exhaust System Kit 8 Cyl 5.3L Flowmaster

1965 Pontiac LeMans Exhaust System Kit 8 Cyl 5.3L Flowmaster

★★★★☆ 4.8/5 50 ratings
  • Features:
  • Mandrel Bent 16 Gauge Aluminized Tubing
  • Moderate to Aggressive Exterior Exhaust Tone
  • Includes Hangers And Hardware For Easy Installation
  • Connects After Factory Catalytic Converter
  • Premium Flowmaster Quality
  • Made in the USA
  • 3 Year Limited Warranty
Dual; Dual Rear Exit; Includes 2.5 in. Tubing/X-Member Back/H-Pipe/Hardware/Super 40 Series(TM) Mufflers;Legal On Non-Emissions Controlled Vehicles Or For Race Use
American Thunder Header Back Exhaust System; Dual; Dual Rear Exit; Includes 2.5 in. Tubing/X-Member Back/H-Pipe/Hardware/Super 40 Series™ Mufflers;
American Thunder Header Back Exhaust System
14 In Stock
Best Price:
$849.95 USD $1,019.94 USD
BrandFlowmaster
Part #F1317119
ConditionNew
WarehouseB
LeMans Flowmaster Exhaust System Kit 1965 Pontiac
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Additional Fitment Information:
Vehicle Engine CC CID Block Type
1965 Pontiac LeMans 8 Cyl 5.3L 5343 326 V
Description Specifications Reviews (50)
  • Dual; Dual Rear Exit; Includes 2.5 in. Tubing/X-Member Back/H-Pipe/Hardware/Super 40 Series(TM) Mufflers;Legal On Non-Emissions Controlled Vehicles Or For Race Use
  • American Thunder Header Back Exhaust System; Dual; Dual Rear Exit; Includes 2.5 in. Tubing/X-Member Back/H-Pipe/Hardware/Super 40 Series™ Mufflers;
  • American Thunder Header Back Exhaust System

Replacement & Maintenance Guide

Helpful replacement and maintenance guidance for Exhaust System Kit.

SystemExhaust
Description / What It DoesAn exhaust system kit may include pipes, mufflers, resonators, clamps, hangers, and gaskets that route exhaust safely away from the vehicle and reduce noise. Leaks can cause noise, fumes, poor emissions results, and rust issues.
Replace / Inspect GuidanceInspect yearly and before winter; replace sections when rusted through, leaking, loose, or noisy. In salt-belt areas, exhaust parts may need replacement every 5–7 years.
Job DifficultyModerate DIY to Pro
Maintenance TipsWash salt from the underside when possible, replace broken hangers quickly, and fix leaks before they damage nearby parts.
Today, Flowmaster, Inc. is housed in three ultra-modern facilities together totaling over 400,000 sq. ft., one in Santa Rosa, one in West Sacramento, California and the other in Hayden, Idaho. Flowmaster employs over 250+ workers dedicated to building the highest quality U.S. made exhaust products available.

Flowmaster operates the only exhaust Research and Design facility of its kind in the world, centered around our SuperFlow engine dynamometers complete with E.C.A. (engine cycle analysis) equipment and also SuperFlow chassis dynos. Through use of these dynos, Flowmaster's engineering staff can track the complete engine cycle in millionths of a second and can obtain exact technical data of each degree of cam rotation, from induction to the tip of the exhaust system, while also showing the power numbers that really matter, the power numbers "to the ground." Flowmaster also utilizes Spectrum Analyzers to fine "tune" the sound of each of the eleven different series of mufflers that Flowmaster currently offers, both for peak performance and just the right sound levels and tones.

Flowmaster's product line includes exhaust products for Performance Street, Muscle Cars, Trucks, Street Rods, RV's, Motorhomes, and all types of race applications. With over 400 different muffler models, 370+ exhaust systems and numerous exhaust accessories available, Flowmaster offers you the choice of sound to fit your preference from "wild to mild" and your specific vehicle needs. With Ray still active and "hands on" with the R and D department in the development of new exhaust products and new technologies currently being tested, the future looks to be very exciting indeed.


General

Exhaust Series
American Thunder
Exhaust Type
Dual
Exit Position
Dual Rear
Exit Style
Straight
Heat Shield Attached
No
Inlet Diameter
2.500 In.
Inlet Inside Diameter
N/a
Muffler Count
2
Muffler Part Number
952548
Muffler Series
Super 40 Series
Outlet Outside Diameter
2.500 In.
Sound Level
Moderate/aggressive
System Type
Header Back
Tail Pipe Diameter
2.500 In.
Tip Diameter
N/a
Tip Quantity
0
Tubing Diameter
2.500 In.
WARNING CA Proposition 65
No
Information on technical characteristics, the delivery set, the country of manufacture and the appearance of the goods is for reference only and is based on the latest information available at the time of publication.
  1. tony
    27 Apr, 2015
    Nice
  2. Kathy Wise
    06 Apr, 2015
    Paid my local muffler shop $175 to install. Fit perfectly. I did have them cut back the tip for a more subtle look. Sounds great.
  3. Readasaurus Rex
    06 Apr, 2015
    Awesome Flowmaster sound and connected (relatively) painlessly to my 02 Tacoma. You do have to add an extra hanger as it will not fit in the rear stock hangers and the bolt that came with the kit was too large to fit through my frame. I didn't go five stars on this because it DOES NOT COME WITH GASKETS or mounting hardware, so you will have to buy your own. Not a big deal since the gaskets came to $4 (O2 sensor and flange), but just something to be aware of. If you can't recycle your existing hex nuts from your O2 sensor, I used 8mm lock nuts and they worked perfectly.
  4. C-Hav
    04 Apr, 2015
    didnt buy this on AutoPartsWAY. i got mine through advanced auto. payed a little more for sure. just want you to know that this exhaust is the best. had it for at least a year. sounds very natural and dosnt "drone" in high gears like most do. throttle response also increased drastically
  5. Johnny W.
    01 Apr, 2015
    Little too quiet but just as described.
  6. jason
    27 Mar, 2015
    Bought this for my 1991 Camaro RS with the 305 V8. Very easy to install, made in the USA. Sounds better than my stock exhaust that was rusted out.
  7. C. Varga "Piperpilot"
    15 Mar, 2015
    System fit nicely, went together relatively easily and sounds great!
  8. K Quinn
    15 Mar, 2015
    Installed this system on my 2010 F-150 5.4L Lariat. It was easy to install and took about an hour and a half. Nice to have the option of rear or side exit. I chose rear. Very happy with the sound and look of the new exhaust system. Deep and throaty, but not too much. Would recommend to anybody. Only downside is that it arrived a few days after the expected delivery date.
  9. rick66
    11 Mar, 2015
    great fit good sound
  10. robert rombaoa
    26 Feb, 2015
    quality built parts easy and detailed instructions fast shipping
  11. rock daly
    15 Feb, 2015
    great fit 1967 Camaro convertible , after market bmr center brace
  12. caridad cabada
    23 Jan, 2015
    very good, perfet
  13. txpeg1
    22 Jan, 2015
    My son loves it got it for Christmas and put it on his car sounds great too!
  14. James Collins
    16 Jan, 2015
    Great instructions! The most difficult part is deciding which way to turn the exhaust tips, out the back or behind the rear wheels.
  15. Chris Conner
    09 Jan, 2015
    Good sound, no drone and easy install.
  16. Rick Steele
    05 Jan, 2015
    Shipped faster than I expected. Installed in less than an hour on my 2001 Silverado 2500 4x4 with the 6.0. A little bit of cabin drone, but that's to be expected. I had already dynamatted the doors on my truck so I imagine it would be much louder inside without it. Just a friendly heads up. Overall I'm very pleased with it.
  17. Ricky Frame
    04 Jan, 2015
    Bolt right on and sounds great with the dual 40 mufflers
  18. Joseph Nolan
    01 Jan, 2015
    Took forever to decide on an exhaust. so much research and comparisons. finally decided on the American thunder because of flow masters awesome sound reputation and performance.Boy am I glad I went with this one instead of the corsa extreme for a $1000 more. Sounds amazing. noticed a huge increase in HP.Here are two things that I noticed that I have not heard in my research.1-when it goes into eco mode I can not really hear a difference. And what I do here sounds good. (was worried about that, and one of the reasons I was not going to get an aggressive exhaust in fear it would sound like crap when in eco) this is simply not the case and I can barely tell the difference.2-when on the highway I have noticed in cruise control that it stays in eco mode a whole lot more, which is good to save gas. I'm guessing because of less restriction and more HP. I can now go up slight grades without it kicking out eco mode.Me, my wife and my 2 girls 7 and 11 absolutely...
  19. michel l nash
    17 Dec, 2014
    i love made the camaro sound like the beast it is!
  20. Veronica Schroeder "outlaw525s"
    12 Dec, 2014
    Length:: 1:04 Mins
  21. A Casanova
    11 Dec, 2014
    I have a 99 Chevy Silverado 2500 6.0 that I installed this kit on. This kit is very nice comes with all the hardware needed to install. It went on easy and I have had no issues with it. I installed it July 2014 and at first was not really happy with the tone of the exhaust. It was not bad just not what I thought it would be. But after giving it time to break-in I love it the tone did change after having on for about 2 months. It does come with a nice tip you can put on or leave off. The heat sheild seemed like a over kill but I did put it on and the supplied hardware made it simple. If I remember right it think you get the Super 50 Delta Flow Muffler. You can hear it when your on it but when your cruising there is no drone in the cab.
  22. John F Wetherell
    11 Dec, 2014
    This product is great. The added power is awesome. The throaty sound is well throaty.
  23. Patrick Hughes
    09 Dec, 2014
    Delivered and performed as hoped. Absolutely no issues on any front.
  24. dwl
    07 Dec, 2014
    These fit my 1998 GMC 3/4Ton Suburban Great. I've also installed on my 1994 Chevy 1/2 Pickup. They fit better than the original GM. Remember to purchase with this the two exhaust manifold donut gaskets, and the flat gasket that fits to the resonator. Only gripe is the bolts supplied to bolt to the resonator are not sized correctly, purchase 4 - 1/2" bolts at 2 inches length to have ready to install.
  25. Timothy Fridinger
    26 Nov, 2014
    Easy install, sounds great! Don't forget to go buy a new O2 sensor gasket and a new gasket for intermediate pipe to catalytic converter connection. You'll need them as I found out...you cannot possibly reuse the old ones as flowmaster states. Wish they included them as this is why they didn't get five stars from me.
  26. Brian J
    24 Nov, 2014
    excellent product. Installation was easy. Fit is much better than the Magnaflow that I had on previously (Magnaflow feel apart and they would not honor warranty, long story. Don't buy magnaflow).
  27. RandomHero
    22 Nov, 2014
    Soft spoken monster. I'd easily buy it again
  28. Michael Bailey
    15 Nov, 2014
    Awesome product!
  29. Paul L.
    10 Nov, 2014
    Arrived before the timeframe, needed this badly (so made me happy). Some trouble with cat studs, but drilled them out and installed bolds.............. once everything was prepared for installation, things went smooth.... nice and quite, but dont feel any difference in power.... Also, sounds nice when I am on the gas...............but not like the Super 40............... somewhat less aggressive....... but hey..... I have grey hair................ dont want to race on the street anyway. Just was looking for a street legal sound which made me feel good...............
  30. ridewithnofear
    30 Oct, 2014
    Trust me when I tell you the you tube videos don't do these pipes justice! The videos are good but wow when you get these bolted on you will be much more impressed. It took me 40 minutes to install them on my 2014 Ford mustang GT. When I turned the key for the first time I can't even begin to explain the difference. It sounds like a race car now! I have a truck with over 650 hp and this mustang now sounds almost as mean as that truck! I read about some people complaining about drone noise at road speed. I have a convertible and I don't really notice that much of droning. It's definitely louder in the cabin no doubt. If you pass a pedestrian you may want to not crack the gas pedal too hard because they will jump out of their skin from the noise and compression! :)
  31. Steven A. Bryan
    02 Oct, 2014
    This is installed on a 2011 Toyota 4Runner SR5. I had to cut out my stock exhaust because the bolts that connect the intermediate pipe to the tail pipe froze. Other than that installation was easy. The new exhaust fits very well into the hangers and closely mirrors the stock path. The exhaust note is mellow and not much louder than stock. It has helped my fuel economy 0.4 - 0.6 mpg depending on terrain. I will buy from them again. I think this is an excellent product.
  32. Matt Pedersen
    25 Sep, 2014
    I had the American Thunder axle-backs on my 2013 Mustang 5.0 and the Flowmaster 10 series before these and they both weren't loud enough. The Outlaws are significantly louder, but they aren't as loud as I thought they would be, I think they are the perfect volume. They are loud when you want them to be and have a nice grumble when just driving normally.There is some drone, but I actually really like the drone (thats why I always go Flowmaster), the drone gives it deep muscle sound.I went on a date last week and the girl was telling me a story and I gave it a little gas (didn't floor it) and the girl stopped mid-sentence. I told her to continue and she just said, "sorry, I just love the way your car sounds!" Similar thing happened this week on a date.If you want an aggressive, muscle sound (without being obnoxious) definitely go with the Outlaws.
  33. chris m
    24 Sep, 2014
    Nice finish to the exhaust tip, really nice sound of low rumble and not too loud, it does tend to mellow out just a little bit at higher rpms but still noticeable. As for performance, I do feel just a bit of a punch on the highway and it's seems to be somewhat smoother when accelerating from a full stop. As for fuel economy I haven't noticed much of a change but then again I drive like an ass. For installation, at first the tip does not sit nicely in the center of the bumper cut out so you will need to cut part of the pipe that goes into the muffler so as to correctly position the tip.
  34. East Coast Imports Inc
    20 Sep, 2014
    Nice tone to the exhaust, not too loud. This system fit as expected. The hangers were all in the correct place. As easy as it gets...thanks.
  35. Andrew Nagle
    10 Sep, 2014
    Perfect fit 1998 Cherokee XJ 4.0L
  36. kihnk
    07 Sep, 2014
    Excellent...Sounds Great...Looks Great...Easy Install... Fit Perfectly
  37. Daniel
    06 Sep, 2014
    It sounds good but I would like it to be a little louder. Sound quality is top notch. Does not pop at all in high revs. Louder would be better.
  38. jean heiner
    03 Sep, 2014
    Thank you
  39. RDretired
    31 Aug, 2014
    Great system, went on easily and everything lined up first time. Even though the mufflers are rated as very aggressive by Flowmaster the sound is not objective at all. I installed this on a 1987 Monte Carlo SS and just for grins after I took the old system off I fired it up to hear what the car sounded like with just the CAT - nothing like an open system on my 1966 GTO! The CAT substantially cuts down the exhaust noise so don't worry about the aggressive mufflers. The only reason I didn't rate it as 5 stars is when I installed the R/H tailpipe the section of pipe that goes into the muffler seemed to me a little short. I could still rotate the tailpipe by hand after the clamp was tightened all the way down. I've had the system installed a few months now and the tailpipe has stayed in place so I can't complain too much.
  40. j j
    19 Aug, 2014
    luv it
  41. LepD
    15 Aug, 2014
    Sounds great on an older 5.0 liter and comes in at a great price. The fitment was pretty flawless for a bolt in exhaust. I didn't need to do any custom work. Just took time to move the pipes around until everything was lined up perfectly. The only thing better than this is having a shop custom bend and weld pipes for you.
  42. Jennifer Brown
    10 Aug, 2014
    I ordered this for my husband and he absolutely loves them. We ordered these for our 2004 Silverado 1500, and my husband said that they were easy to install and the sound is great.
  43. C. Thomas
    08 Aug, 2014
    perfect fit for my 96 Suburban with 6.5 ltr. turbo diesel complete with hardware
  44. Bigfield1
    07 Aug, 2014
    4.0 cherokee sounds very nice with muffler
  45. Santi13
    03 Aug, 2014
    Finally got around to istalling this on my 2010 Dodge Challenger RT Classic. I love my car, but it didn't really have the sound I was looking for. This cat-back is a noticeable difference and sounds amazing, without pissing off my neighbors. The hardest thing about this install was removing the factory exhaust. This clamp on system only took about 30 min to put on because everything just fit and aligned perfect, minus the factory tips.
  46. Mike Meyers
    19 Jul, 2014
    Installed on 2010 Camaro SS. A tremendous upgrade to the factory exhaust, which I find far too polite for the vehicle. The idle is deep and burbly. It's not oppressively loud inside, the most noticeable difference is the low drone at highway speeds. Also, especially compared to the factory exhaust, this kit delivers wicked exhaust overrun: mean-sounding pops and snarls while decelerating in gear. (I have a 6-speed manual, and this can be defeated by pressing the clutch or riding in neutral. Less fun, but more discreet.) I'm not sure how the overrun would sound in an Automatic.The American Thunder is the second-loudest kit Flowmaster makes behind the Outlaw. My impression is that the Outlaw would garner (for me) unwanted attention, whereas the AT just sounds like a muscle car should. Exhaust shipped to my house, and I had it installed at a local shop for under $100.This isn't my video, but it's a great example of the SS before and after the...
  47. J. Gabler
    22 Jun, 2014
    Quality is great. Showed up on time. It's a little too loud for everyday use. Wish I could swap out the muffler for the next quieter one.
  48. Pete B "Pete"
    12 Jun, 2014
    I have a 2006 Colorado work truck that I have been customizing, wheels, accessories, etc. I struck a deer last November and destroyed the air intake system. I replaced it with a K&N system. To complete the job I went with Flowmaster. After imputing all the info on the Flowmaster web site, 817549 was supposed to fit. It didn`t The tailpipe fit, but the pipe coming off the converter was too long. Rather than send it back my local exhaust shop was able to tweek it enough to work. Sounds great, along with the K&N a little more HP.AutoPartsWAY had the lowest price, shipping was quick.
  49. JW
    12 Jun, 2014
    The sound is awesome. And it was very easy to install. I have limited knowledge in auto mechanics but I did this project in about 4 hours with minimal tools.
  50. Timothy Jumper
    06 Jun, 2014
    This was the third Flowmaster exhaust that I have put on my vehicles. This was a perfect match up to the stock system and was very easy to put on. The only draw back that I wanted to point out was that the rating on the aggressiveness of the sound and it was not there but as it breaks in it is getting to be a little more volume to it. I have looked at a lot of exhaust systems and for the price and quality of the flowmasters it is going to be hard to beat them.

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