New Kooks 6753 Truck Headers arrived!!! (pics inside)
Apr 8, 2010 | 11:56 AM
#41
Or this if u really need to adjust the fit. 
Apr 8, 2010 | 11:58 AM
#42
Bummer guys, I tried putting these things on last night from the top and then from the bottom on the passenger side. They were about an inch off from fitting. I couldn't get the ports lined up on the head to the header. The header rested on the frame (primary tube #4) and wouldn't allow it to go down further. I guess these don't fit 03-07 trucks afterall 
I'm working with speed inc right now to try to get the headers exchanged back. We had an agreement that if the headers didn't fit, they would accept them back in return. We'll see how that goes. In the meantime if someone wants a deal on these, I'll hook them up. These technically are for a 2008 Escalade Part#: 6753. I have these sitting next to me in the box right now and I can ship immediatly. If you want a set of these for your 07+ GM SUV, you'd have to wait a month to get them and pay $150 more than I'm selling them for.
See for sale thread here: https://www.performancetrucks.net/fo...82#post4435582
I'm working with speed inc right now to try to get the headers exchanged back. We had an agreement that if the headers didn't fit, they would accept them back in return. We'll see how that goes. In the meantime if someone wants a deal on these, I'll hook them up. These technically are for a 2008 Escalade Part#: 6753. I have these sitting next to me in the box right now and I can ship immediatly. If you want a set of these for your 07+ GM SUV, you'd have to wait a month to get them and pay $150 more than I'm selling them for.
See for sale thread here: https://www.performancetrucks.net/fo...82#post4435582
Apr 8, 2010 | 12:32 PM
#43
that sounds like the exact issue i was having. check and make sure it's not the transmission lines making it not work. on mine, it seemed like it was touching the frame too hard to fit. the holes wouldnt line up on the head and the front wouldnt even touch the head. i had to relocate my tranny cooler lines away from my starter to get the primary off of the frame. they slipped right up and in after i moved those lines. i didnt even know the lines were touching.
Apr 8, 2010 | 01:57 PM
#47
Thread Starter
TECH Junkie
iTrader: (31)
Joined: Dec 2004
Posts: 3,471
Likes: 1
From: Minneapolis, MN
I'm seeing what Speed Inc offers me first. I was hoping to just add some cash and move into a different brand header that I know fits. The Fbody headers worry me as far as fitment goes.
Aug 2, 2010 | 06:18 AM
#50
TECH Apprentice
Joined: Jul 2010
Posts: 304
Likes: 0
From: Creedmoor, NC
This will be the last time I monkey with the exhaust. It will work fine for my setup. Also being my exhaust guy doesn't have a mandrel bender, when you bend 3" pipe it gets reduced down slightly anyways. Also for my next motor, I don't want to have to do the exhaust over again. (lsx427)