Anyone know what would be a reasonable price to install my Thorley headers? I have to get this done before Fri morning (finace gets home and I need to get rid of the evidence).

 

Don't know on cost. But whoever does them, tell them to use the stock steel gaskets and give them a tube of Permatex ultra copper RTV to cover the gaskets with. That way you won't have any leaks.

LOL on the wife thing! Been there.

 

thorleys fit great if you do plan on doing it yourself. not even a bitch to get into position

 

i would highly recommend doing the install yourself. it really isnt a hard install. mine took me and my buddy like 3 hours in 15degree weather in my apt parking lot.

 

I really think I can do it myself. What did you use to get the truck up?? Im a pretty big, thick guy. Im like 5'9 235 and my arms are 20 inches, so moving around under there may not be too easy unless you have a decent amount of room. Am I going to have lean or extremely rich conditions on the 30 min drive to the exhaust shop to have it welded up?? I have a blower and 43lb injectors if that matters. How much prior experience did you have?? It seems pretty easy.

 

well your a big old boy I am small in comparison about 5'8 and 200lbs but I understand about geting under the truck my chest gets stuck on the crossmember ever damn time I slide underneath. I would just suggest the little ramps you can drive on and and it will raise it about a foot or so. they should slide in pretty easy always have abuddy help you just incase something does go wrong.

 

yeah we did mine with hardly any room. it definetly had to be raised some though

 

Where can I get these headers to fit my 2000 5.3 L Yukon XL. Can I get some ideas where to look?

 

Summitt has them.

 

Ok thanks I will look there. What model magnaflow do you have on the 01 tahoe. Do you like that magnaflow & header combo. Will that give me a lot more HP?