View Full Version : 97 cobra MAC LT's header installation

05-17-2003, 11:50 AM

I've haved these MAC LT's headers lying in my basement for a week and I am just know getting a chance to try to install them. But as you Cobra owners know there's not much room to work with. However I do have a lift that I could use a work (jiffy lube) so that not a problem but putting them on is. Anybody have a quick or easy way to get these headers on?? What steps do I have to do please list them all step by step so I don't mess this up!!

Oh and how much damage could I cause if I run the car w/out mufflurs after the installation???

4:10 VS 4:30 option?? disadvantages/advantage


05-18-2003, 09:26 AM
I'd worry more about how much damage you'll do by using MAC longtube headers......

9 out of 10 Mac Longtube users on 4.6 DOHC engines have had to rebuild their engines shortly after installation of these headers. No other changes except installing MAC longtubes and oil consumpiton increased dramatically, massive amounts of smoke on deceleration and between shifts.......

That being said, the easiest way would be to drop the k-member (while supporting the engine) as this will give you easier access and more room to work with. Get some assistance if you can, and expect to spend most of the day working on it :) It's a tedious process and will have you cussing a few times throughout the install.

05-18-2003, 10:40 AM
I'd worry about the Mac's too. Read this thread before you proceed: Click Me (http://www.corral.net/forums/showthread.php?s=&threadid=167953&perpage=35&highlight=drinking&pagenumber=1)

05-19-2003, 09:55 AM
If you care to still have good running engine after the headers... Do not install the MAC LT's... Either return them and get a set of BBKs, Kooks, or Hookers or maybe even skip the headers all together.

I'm one of the many people who have lost engines to poorly manufactured/designed MAC LTs... If you do decide to install them, expect increased oil consumption immediatelly after install (to the tune of 1-2 qts every 100 miles or so) as well as nice clouds of white smoke while accelerating. NICE EH !!! :mad:

I went through some serious battles with MAC to just even refund me my money for the headers and ended up with a $7,000+ bill for a new motor...

Just a warning from someone who has gone through it !!!

Take care,