Jump to content

Headers: long tube vs shorty's

hordy240

By hordy240
in Engines & Drivetrain

 Share

Recommended Posts

hordy240 New Member

hordy240

Posted
Posted

Hey all. First post in the group. I have a 2018 sierra with a 6.2l

Recently added an airaid MIT with a drop filter, got a diablo custom tune from "diablew", and have a magnaflow race series exhaust with resonator removed. 

 

Figure my next best bang for my buck for performance would be headers (unless there are other suggestions which I'm all ears)

From what I read, long tube provides more horse lower in the mid to high rpms, and short provides more low end tourque... is this accurate? What is my best bet for max performance for my money. I don't race or do any track stuff... just a daily driver but I want that nice glue to my seat power every now and then... which option will I feel the most? 

CamGTP Senior Enthusiast

CamGTP

Posted
Posted

Shorty headers are a complete waste of money. The factory manifold does in fact flow very well, look at how much power a stock camaro and corvette make, those run factory manifolds.

 

It's long tube headers or nothing. You will want to get a set with cats otherwise your exhaust will be so loud you will hate all the drone and rasp it has. But even with cats you may still want a resonator to tone it down some.

  • 3 weeks later...
rlcole321 Enthusiast

rlcole321

Posted
Posted

Yeah, shorty's are a waste, I did long tubes on my 2018 (w/DOD delete), 3" single out the back, I used my factory cat's, have all 4 O2's, 22" Flowmaster, and Resonator, (my wife says it's too loud!!), it's got a little rumble. Now all that said, you will get some lazy O2 codes and you might need to invest in a HPTuner system. I'm trying to "Retune" mine for P015B, P015D codes but not having any luck yet (Cam if you have any suggestion, let me know) so I may have to delete those codes.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.5k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,902
    Total Members
    8,960
    Most Online
    whenindoubtuseahammer
    Newest Member
    whenindoubtuseahammer
    Joined

  • Who's Online   2 Members, 0 Anonymous, 236 Guests (See full list)

  • Latest Articles

  • Posts

    • davester
      My First Project and GMC has me stumped

      By davester · Posted

      are there any codes? with lots of rust, perhaps disconnect/clean both sides of the connection/examine cable ends (the wires) for corrosion going into the sheath & replace if necessary/reconnect ALL the power AND ground cables between the battery, engine, frame, cab, fuse box and starter charm.li (website) has a no-start diagnostic procedure you can work through to get it working.
    • Chuck FB
      OCI, not when but why?

      By Chuck FB · Posted

      Its no wonder you've gravitated to the oil types and brands you have in later years after trying certain brands and one being a specialty oil or at least very hard to come by up here and the other would have been a commonly found oil of the era and the vastly different outcomes as a result to using the vehicles in question the same distance for an OCI . It shows what marketing hype can do without actually having the product to back up the claims and that is no different now with the insane claims that are written on the side of a bottle of oil from some of the off the shelf oils.    What has surprised me and I was already finding this out before I bought my truck with the GDI engine, that this newer fancy technology that seemingly would suggest better fuel economy/emissions with this high pressure spray of fuel is not in reality kind at all to the engine or at least the oils life. Yet they insist on claiming long OCI with this technology just like they did with the port or similar type fuel injection systems when in reality its a step back in oil life to have a GDI system.    I think the mistake your making Grumpy is that your not sending your samples to Blackstone and getting the feel good glowing report that you can run it another 1000 or more miles and then send another sample where they say run it yet another 1000 miles and on and on it goes until your sending in something that looks a lot like road tar and then they may suggest you change your oil within the next 1000 miles 😆
    • Chuck FB
      OCI, not when but why?

      By Chuck FB · Posted

      I am guessing that engines of that design back then had a better ability to be abused and survive longer than a new design engine with the long timing chain and the overhead cams and phasers etc. But I would never guess that an engine could go that far and not fail spectacularly or at least die a slow death. 
    • Grumpy Bear
      OCI, not when but why?

      By Grumpy Bear · Posted

      In the 80's 90's I'd run Honda's 7,500 miles between changes using Red Line HP 5W20 and do it for hundreds of thousands of miles with issues. Back in the day it was an SAE 20 with the HTHS of a SAE 30 and SN add load. It was also very polar. Oxidation VOA was over 120. Besides those motors were SPFI and lean burn tech. I could have likely run it longer but never did.    We had a Toyota bought new I ran on Pennzoil's latest and greatest synthetic of the day with "Penthane". A made up word for a very low dose of PAO. Tried 7,500 mile OCI's in that Group III/VI chemistry and the rings tapped out at 90K. Rocker box wasn't as bad as the one Punch put up but it wasn't good either. Also a SPFI motor.    I'm around 3,750 across the board on these GDI monsters and the oil it tapped out by then usually on TBN/TAN crossover and color. Red Line HP Euro.    The AMSOIL SS brochures tell you to follow the OEM values for the service class but that it can be run up to 25K if monitored. I can't imagine what motor could go that distance and not tap out. I've never owned one.    Yes, I know. Lot's of people do. I'm just not going to be one of them. 
    • Grumpy Bear
      OCI, not when but why?

      By Grumpy Bear · Posted

      I knew a guy in the early 80's that bought a new Monte Carlo and ran it a 100,000 miles without ever changing the filter or the oil. Just kept adding. It looked like that inside.     

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...