just installed the MAC headers off my ls1 didnt have to cut anything just used my shop hammer in some tight spots on the passenger side

 

thats what i used

 

lilreddevil has used ls1 headers on his 5.3L. Send him a pm about what he had to do to make it work.

 

yep lilreddevil has ls1 headers on his truck.

 

i made mine work also and didnt cost me notta for the headers since ive had them from my LT swap 1.5 yrs ago just a trip to the muffler shop

 

i put ls1 headers on my truck a long time ago i have the steper headers 1.5/8 to 1.3/4 r 1/78 don't remember it is the hooker i paid 220 to my door.
the driverside was the tight side by the motor mount

 

let me get this right. ls1 fbody headers will work on the trucks. What about a 2500hd?

 

dont' know about a hd but you will have to modify the fit.

 

I have some Flow Tech headers with True Duels from my old '98Z. Now i have a 2005 SCSB 5.3 and would Love to just put those on?

What is the Final Status on using F-body headers. Was it just the shorties and the Mid-lengths or the Long tubes as well?

litreddevil? EXILE (with the mids)? whatcha thinking?

 

lilreddevil has long tubes on his truck. i think he heated them and bent them using a come a long. lol