Headers and catless crossover

[Jjdenali]

OK cats are done and I don't want to replace them. I'm taking suggestions for short/long tube headers and a catless crossover. It'll be getting tuned without the cats. It's got factory exhaust except for a black widow race venom. Cai, coils and a good set of plug wires are the only other thing done to it.

 

[ivin74]

Don't waste your money on short tube headers you are not going to get much HP gains. Long tube all the way 15HP gains

 

[Jjdenali]

Don't waste your money on short tube headers you are not going to get much HP gains. Long tube all the way 15HP gains

I planned on long tube.

 

[Countryboy07]

All depends on your budget, Long tube headers with catless Y-pipe can run anywhere from $600-$1600. I have heard lots of good things about Texas speed Long tubes. Pretty good price too!

 

[Jjdenali]

All depends on your budget, Long tube headers with catless Y-pipe can run anywhere from $600-$1600. I have heard lots of good things about Texas speed Long tubes. Pretty good price too!

I looked at their long tubes and crossover last night. The only thing I didn't like was the fact the crossover has to be modified to work on my 6.2.

 

[Jjdenali]

All depends on your budget, Long tube headers with catless Y-pipe can run anywhere from $600-$1600. I have heard lots of good things about Texas speed Long tubes. Pretty good price too!

They're definitely the most economical choice.

 

[ivin74]

I looked at their long tubes and crossover last night. The only thing I didn't like was the fact the crossover has to be modified to work on my 6.2.

That is normal when you install long tube headers on these trucks even on the sierras/silverado's.

 

[Jjdenali]

That is normal when you install long tube headers on these trucks even on the sierras/silverado's.

Oh OK

 

[sumo]

Don't waste your money on short tube headers you are not going to get much HP gains. Long tube all the way 15HP gains

I got 50 on a dyno compared to a truck without long tubes like mine. But I am supercharged tho

 

[992dr]

I'd suggest looking at Speed Engineering before biting the bullet. They have a dual set up as well.

http://www.speed-engineering.com/shop-by-vehicle/1999-13-lsx-trucks/exhaust/headers.html

http://www.speed-engineering.com/sh...sx-trucks/exhaust/true-dual-exhaust-kits.html

 

[Jjdenali]

I'd suggest looking at Speed Engineering before biting the bullet. They have a dual set up as well.

http://www.speed-engineering.com/shop-by-vehicle/1999-13-lsx-trucks/exhaust/headers.html

http://www.speed-engineering.com/sh...sx-trucks/exhaust/true-dual-exhaust-kits.html

I'm ordering 1 3/4 from speed engineering with the catless crossover. You can't beat $379.99 with the gaskets and bolts.

 

[ivin74]

JJdenali
From past experience the header gaskets you get are crap (garlock material), go to Summit Racing and buy the SS gaskets. If you don't you will be replacing them not long after you install the headers.

 

[Jjdenali]

JJdenali
From past experience the header gaskets you get are crap (garlock material), go to Summit Racing and buy the SS gaskets. If you don't you will be replacing them not long after you install the headers.

I paid extra to get the multi layer steel gaskets. I've run headers on lots of small and big block chevys just not on an ls so I knew to get good gaskets. Changing header gaskets once they're installed really sucks.

 

[Jjdenali]

Well they're installed . 8.5 hours total. It had 6 broken manifold bolts , 2 flush with the head . When my fiance wakes up and starts it in the morning I'm quite certain she's going to kill me lol it sounds badass , extremely loud but badass ! I haven't driven it yet but throttle response has definitely increased and the engine seems to run a lot smoother . The speed engineering kit actually fit exceptionally well for the budget price . I didn't take pictures while I was installing but I'll get some in the daylight tomorrow of the completed install .

 

[Jjdenali]

I'd suggest looking at Speed Engineering before biting the bullet. They have a dual set up as well.

http://www.speed-engineering.com/shop-by-vehicle/1999-13-lsx-trucks/exhaust/headers.html

http://www.speed-engineering.com/sh...sx-trucks/exhaust/true-dual-exhaust-kits.html

Their kit fit great ! No clearance issues or anything ! Thanks for the suggestion! Less than $400 shipped with the bolts and the upgraded MLS gaskets !

 

[Burnswil]

Their kit fit great ! No clearance issues or anything ! Thanks for the suggestion! Less than $400 shipped with the bolts and the upgraded MLS gaskets !

Was it all bolt on or did you have to do some welding. I'm about to purchase the kit and this would confirm it for me. Can't wait to see pics

Also, which kit did you get. Not sure if I need the y pipe kit ? Considering the true dual kit also.

 

[Jjdenali]

Was it all bolt on or did you have to do some welding. I'm about to purchase the kit and this would confirm it for me. Can't wait to see pics

Also, which kit did you get. Not sure if I need the y pipe kit ? Considering the true dual kit also.

I did the 1 3/4 full length headers and catless crossover . Yes you have to weld the crossover to your existing exhaust . I was extremely satisfied with the fitment of quality .

 

[Jason_S]

Well they're installed . 8.5 hours total. It had 6 broken manifold bolts , 2 flush with the head . When my fiance wakes up and starts it in the morning I'm quite certain she's going to kill me lol it sounds badass , extremely loud but badass ! I haven't driven it yet but throttle response has definitely increased and the engine seems to run a lot smoother . The speed engineering kit actually fit exceptionally well for the budget price . I didn't take pictures while I was installing but I'll get some in the daylight tomorrow of the completed install .

With 6 broken exhaust manifold bolts, it is entirely probable that your improved throttle response and smoothness are coming from fixing the exhaust leak that you had.

 

[Jjdenali]

With 6 broken exhaust manifold bolts, it is entirely probable that your improved throttle response and smoothness are coming from fixing the exhaust leak that you had.

The gaskets were still sealed . No signs of leaks believe it or not . You couldn't hear any either .

 

[Jason_S]

The gaskets were still sealed . No signs of leaks believe it or not . You couldn't hear any either .

Wow. That isn't common, usually starts leaking after the first bolt breaks.