What headers work, and what don't?

66cuda said
DIfference is 5/16 flange vs 3/8 flange, Material & thickness of tubes / collectors...73 is the widest A body made so headers are not as BIG of an issue as on the 67 - 69 or even worse on the 64 -66...... check out the specs and buy reputable or you will be replacing them in a year or two...also fit them THEN get them ceramic coated.... I do not use the three bolt collector flange they are a PITA....try the stainless band but that means cutting off the flange retainer on the end of the collectors...I like them becuse they do not come loose ( if dun rite) and seal better ALSO much easier to remove & reinstall if necessary. in short YES there is a difference a noticable and notable one

Is there really a diffrence on width between 67 and 73?
I just assembled 318 with (flowtech?) headers +904+8 1/4, in my 67 Dart. Took them from 74 Dart. I didnt notice any differences on widht.

Anyway, it was pain to assemble them in both of them. Allso had flowtechs in my 69 Valiant with 318. They didnt fit well, and soon they were warn trough by track rod.

I still vote for cheap headers. Quality headers are expensive. Come on, its just a heap of pipes! I would save that money and by a Tig- or Mag-welder. ;-)