Just trying to help you not make same mistake i did... Wish i had had cam specd to begin with.... Hate doing it twice, but live and learn!!! Dealing with headers now.... Had a set of shortys i planned to use but they didnt even mate to my stock ypipe well... And with what ive spent on cats and manifolds and now a set of headers and about to be another set of cats and my exhaust i couldve been done, but againat time i was dead set on running full ss exhaust, in hindsight i probably couldve had a set of kooks or whatever at this point and been done whth it.... But ive got a set of speed engineering1 7/8 longtubes getting ready to go in as soon as i can get ahold of a set of cats and get the vbands welded up....

 

I bought a set of speed engineering 1 7/8 full lengths too when I bought the cam. I havnt put em on yet but I bought it with the y-pipe so I won't be running any cats. I'm gonna put em on when the cam is in and go get it tuned right away. I think they should work out alright

 

I did a quick lil mock up to see how the y pipe would fit and it looked like it might've been a bit short. But it's hard to see how it all lines out with stock tubing still in place so we'll see what happens

 

Im in virginia and a state inspector so i kinda have to run cats....truck wont pass without em, and the state troopers like to check inspectors vehicles from time to time... Otherwise i would be running without cats, and if i had kept my old exhaust, i wouldve ordered a ypipe and just modified it to get a set of cats between the header collector and the y..... Which probably wouldve been simpler than what im about to do...

 

Did you have the extension/adaptor installed....

 

Ah I hear ya. We don't have to have emissions on 3/4 ton trucks here in Missouri. And my tune will take care of my cel lights. Otherwise I was gonna be going the the route you are

 

No I just kinda held everything next to the stock y pipe. I saw the few small extension pieces that came with it just wasn't sure how everything bolts up. When it's all being put together I'd imagine it'd be fine

 

What transmission do you have???

 

I believe I have the 80e. I've done countless searches trying to figure out exactly which 6.0 I have when I was trying to confirm if I had vvt or not, along with trying to figure out which tranny I have just to have that that info. I never could find a definite answer on either

 

Look in your glovebox there will be a white or probably silver looking sticker with your vin and a bunch of rpo codes... You can tell everything you need from that sticker.... Being that its a 12 id say probably 6l80e trans which is iirc MYC rpo MYD for 6l90 and m30 for 4l60 and either l96 6.0 or i wanna saw the flex fuel version is an lc8.....