Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - X pipe or H pipe
View Single Post
  #41 (permalink)  
Old 03-19-2013, 03:53 AM
cobalt327's Avatar
cobalt327 cobalt327 is offline
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 60
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 598 Times in 547 Posts
Quote:
Originally Posted by 65 Imp SS View Post
Here are a couple of articles to check out:
Exhaust
I ended up running an x-pipe with a "warmed" over bbc (pic in avatar) and it is different from the norm dual exhaust but it does not even come close sounding like a v-6...
I recall reading Hand's take on X vs. H pipes, don't remember exactly where I saw it but IIRC he had graphs and such showing et/hp/back pressure or something like that. On his car the X was better- but you can test different cars and get different results, so IMO there is no clear "winner". In Hand's case, the difference was so great (over 1.5 tenths IIRC) that it makes me believe there were other problems besides just the difference between an H and an X. Anyway, I use H pipes because of the ease of fabrication.

FWIW I had a set of 3" Flowmaster 40's and like them just fine, tests be damned. They were what I found for a deal, I ran them, the car ran better than expected regardless of being "hampered" by the FM's. One concession I made to comfort over speed was to insulate it; I used recycled floor insulation out of the 'yard. Weighed a little but kept the drone and heat out.

But one thing I can GUARANTEE you- no one mistook it for a V6 unless they were brain dead!
Reply With Quote