I have an opportunity to pick up some 392 stock shorties. Is it a straight swap? I heard that it matter if its auto or manual, is this true?
Awsome, just the answer inneededNo. The outlets don't match. You'll need to get a muffler shop involved regardless unless you get the entire exhaust system. The 392 system is 2 3/4" and yours (same as mine) is 2 1/2". I've dug into this and decided that JBA shorty headers are far cheaper in the long run since they are direct fit.
The earlier years ('08 - '14) were similar between A5 / M6 applications.I was more concerned with the header fitment of an auto vs a manual
Yup, 6 speee RT+ 2016 i think im at 2.5” unless the manual cars cane with a bigger exhaust
The '15+ shorty clamshells and cats are the same part # for SP / SRT 392 / SRT 'Cat - FYIOk guys my goal here is to buy some 6.4 shorties and some hellcat cats/mids and fab it up to my exhaust. I found a deal on both. The guy selling the headers claims its a 3” exit out the end of the header and the guy selling the cats also claimes the pipes are 3”. Both are off of automatic challengers.
With mine being a manual, does it pose any clearence issues? Any ideas?
Good point but...Hellcat and 6.4 in 2016 both use the same mid pipes......
by the time you spend 2k do buy the parts, better off Kooks long tubes and green catted high flow cats, same price
if you can find used ones for a reasonable price its a great upgrade for a 5.7.....Good point but...
I am not buying new parts. My investment at this point is $400 in parts and i just need to install. Nowhere bear 2k
Also, im extremely nervous about scraping long tube headers ?
Do the shorties have a relief for the stock 5.7 exhaust gaskets? There is a little hump where they bend the shield portion of the gasket. I had to die grind reliefs on my SW LTs.I did a header swap, JBA Shorties, on my 2013 RT. They are a direct swap, no exhaust modifications needed
Get a set of 5.7 exhaust gaskets and the 6.1 header bolts
You can do the swap in about 6 hours if you have the tools.