Gibson Headers

Discussion in 'General Discussion' started by Tcorsrt10, Apr 7, 2019.

  1. Tcorsrt10

    Tcorsrt10 New Member

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    Hello All,
    I just picked up a set of Gibson headers for truck, I currently have a gorgeous Borla exhaust system with factory cats in place that sounds amazing. Does anyone know how much louder or IF louder at all the truck will be.
     
  2. Slitherbeast

    Slitherbeast Active Member Supporting Member

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    The Gibson's are a manifold replacement..... Tubes are to small for any performance gains. Lighter than stock manifolds is the only benefit. just stick with the Borla. Go catless if your area allows it.
     
  3. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    Hard to say if they will make your exhaust any louder; there is no real reason they would. I would however get them ceramic coated if they aren't already as there is a big reduction in underhood heat which saves wear and tear on everything in the engine bay.
     
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  4. Tcorsrt10

    Tcorsrt10 New Member

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    Got it and thanks for your input .....do you know if it would be louder as far as a drone in the cab ?
     
  5. Tcorsrt10

    Tcorsrt10 New Member

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    Understood, they are ceramic coated. May not install if there’s zero gain. I would like to hear a difference in I install them. I can’t get away with a cat delete due to the smog laws in California.
     
  6. safilm

    safilm New Member

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    if you want a loud exhaust - Skip the headers or exhaust upgrade - get

    Quick Time Performance Dual Low Profile Oval Electric Cutout Valves
     
  7. CF916BOSS

    CF916BOSS New Member

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    I have the Gibson's (I'm in NorCal) and they are great when ceramic coated, definitely lesse engine bay heat.

    3" Catback w/spintech 6000 and crossover. Nice and deep with some spank at high rev.... During smog season

    JMB Mids during off season. Lots of cab music and plenty to scare the ricers. Dyno'd @468whp in Vegas last year
     
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  8. shorty

    shorty Full Access Member

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    I have the cutouts and they MUST be as far back as possible. Otherwise they will sound like a UPS truck. Mine are really neat for passing a women in the left lane texting at 40 mph in a 70 zone.
     
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  9. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    Headers/exhaust systems are a strange thing on the Viper engines.
    Cat-backs definitely make a power difference.
    Cat-less (stinks) and personally with the modern high-flow designs, I wouldn't consider that route regardless of the incremental power gain(?).
    The cast-iron manifolds on the trucks are better than those on the cars.
    For the price, headers are an expensive power-to-performance gain.
    I've been at several dyno pulls when headers have been installed and have witnessed little and sometimes ZERO power gain which is surprising to me. This includes longtubes.
    Headers work (primarily) off of valve-overlap and because the low-overlap design of the Gen III there isn't much interaction there. That may explain some of it.
    Some see gains, others don't.
     
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  10. shorty

    shorty Full Access Member

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    I installed mine not for the power gain but the noise. I being kinda deaf like to hear the roar. Scott says the Snake bite is great and I will admit it turns heads but on the open highways of West Texas I like to open the cut-outs, turn up the Eagles or Bob Segar and let er rip. More for me than anyone else. There are actually a few roads in West Texas that one can drive at any speed he likes and never see another car for 10-15 miles. I have started limiting my speed as the old sphincter tightens up so bad it take a little time to get back out of the truck.
     
  11. dodgeboy16

    dodgeboy16 New Member

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    My son and I each had Viper Trucks (Son sold his). His had headers mine did not. His sounded better I don't know about louder,
    My son and I both had Viper Trucks. He had headers on his I did not, we both had the same cat back exhaust. His sounded better but I don't know if his was louder. Be care full what you do with your exhaust, get a bad combo and it will will sound like a School Bus.
     
  12. noid

    noid Full Access Member

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    When I had the Gibsons on there was very little difference in sound. What I can tell you is that losing the rear cats will give you a very noticeable gain in hp and you will still pass the sniffer if you ever had to do it. The good thing is that your year truck just gets the OBD II test.
     
  13. Psycho1122

    Psycho1122 Full Access Member

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    This is an excellent explanation re; headers for our trucks. IMO, you would need to change the camshaft to work together with overall cylinder pressure and the chosen header. Otherwise, the stock manifolds are excellent. Especially if you massage them and have them jet hot coated.
     
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  14. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    Thanks.

    I did go to to trouble of porting my cast iron manifolds at one time, to open them up to remove some obvious restrictions due to casting-shifts and typical mass production issues. The material is tough and you won't be using a Dremel and mini-bits to complete the task!
    And although there WAS a certain satisfaction running good numbers (dyno and the track) with manifolds, they were eventually replaced with B&B Longtubes.
    I had high-hopes for headers on my own truck and although they probably worked, I broke my own rule and made a bunch of other changes before hitting the dyno, so I couldn't tell 'ya how much the headers contributed (or not). I would like to think the more aggressive cam, substantial increase in compression, increased rpm and more aggressive tune required headers, but I will never know.
     
  15. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    I don't know how to edit existing posts with this new forum; but I just wanted to add the burn patterns on both the piston tops and the combustion chambers look awesome and I'm not seeing much in the way of exhaust creep in the intake ports, so the overall package is working very well.
    Good mileage, part-throttle response and mile per hour numbers at the track.
    Happy with the overall package.
    The engine would be killer in a Viper car!!
     
  16. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    In other words, I think the headers are working. :)
     
  17. Tcorsrt10

    Tcorsrt10 New Member

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    Got it !!! Thanks so much for your reply. I believe I’m going forward installing the Gibson shorty headers. Keeping the cats on should run nice through the Borla system.
     
  18. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    Excuse the long-winded replies that appeared to be off-topic (they really weren't).
    Long-tubes on my truck made it quieter out the back and didn't sound quite as deep as before; all good.
    Shorties typically improve top end power and long-tubes tend to enhance low-end torque.

    I just haven't seen big improvements with headers when its' the only change that's been done. They are a good foundation for future work however.

    Now with that said, I've seen some hellish' fast vehicles (all types) with cast-iron exhaust manifolds.

    Have fun with the new tubes and let us know what your findings are.
     
  19. Tcorsrt10

    Tcorsrt10 New Member

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    Thanks for your information. I’m new with Viper trucks. Been into Turbo Buick’s for 25 years. Looking at root style blowers for the big V10 as well.
     
  20. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    Cool.

    Yes I've seen some fast turbo-Buicks over the years!
    Those V6s sound like giant Bees when they are at wide open throttle!
    My buddies' GN ran 10s in easy street trim.

    The V-10s need a little help in the block department when forcing power through them. The Program main caps (or something similar) will help to keep everything from squirming around too much.
    Somewhere I've read the blocks are "good for" around 1000 horsepower which isn't a lot these days. That information came from people that designed and built/build them.

    Beyond that the risk of head-gasket sealing become questionable as that 97 pound crank tries to break out of it's cage! Our V-10s were never designed with boost in mind so workarounds are our only recourse.

    Keeping detonation at bay (as I'm sure you are aware) is the name of the game; particularly with the forced-induction builds.

    Have Fun!
     
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