[DeTomaso] Question regarding 180 headers

[JDeRyke at aol.com]

There are at least three different 180 header systems around and they are 
all constructed a little differently. I think Hall sold two different types 
alone. One set I worked on during an engine change had an individual tube 
mounted on both heads (the other three were on common flanges) and there was a 
definite order that one was supposed to follow in assembly. I managed to get 
all but 3 bolts on the entire set tightened from the top, after adding and 
removing one of the individual pipes (from the top) a couple of times. Are 
these new or used, and who built them?
 
Obviously, no one had the instruction sheet and dunno whose headers these 
were; the owner bought the car with the tubes mounted & was clueless. To 
answer your question, as I remember there was no interference with the tanks or 
the gas tank shield, but some pipes interfered with each other if done out 
of sequence. This is one installation you definitely do not want to be in a 
hurry assembling! And absolutely forget about changing plugs on a hot engine! 
Don't forget the mandatory decklid heat shield. Good luck- J Deryke