Sponsored

Full length header test

SynisterGT

Kooks + Corsa FTW!!
Joined
Apr 26, 2014
Threads
27
Messages
762
Reaction score
115
Location
New Orleans
First Name
Justin
Vehicle(s)
16 GT PP Mag/Redline
Awesome, can't wait for results.
Sponsored

 

mustang_guy

Well-Known Member
Joined
Jun 29, 2015
Threads
12
Messages
5,721
Reaction score
1,324
Location
United States
Vehicle(s)
it has an engine!
Arh is arguably the best exhaust/headers you can buy for domestic v8s. Followed by kooks. Subbed. The x pipe on these necks down a lot. Looking forward to see the gains made.
 

SinisterX

Active Member
Joined
Oct 28, 2015
Threads
1
Messages
40
Reaction score
6
Location
west central NY
Vehicle(s)
2016 GT350 Avalanche grey
subbed
 

Sponsored

C7 B8

Well-Known Member
Joined
Aug 16, 2015
Threads
13
Messages
429
Reaction score
108
Location
PDX
Vehicle(s)
'16 GT350R, '11 Mustang GT
Sub'd. What did they say about equal-length? My understanding is that's ideal for FPC.
 

08fordgt

Well-Known Member
Joined
Aug 21, 2013
Threads
5
Messages
224
Reaction score
47
Location
England
First Name
Keith
Vehicle(s)
2016 shelby gt350 race red
subd
 

Sponsored
OP
OP
Voodooo

Voodooo

Banned
Banned
Banned
Joined
Nov 2, 2015
Threads
107
Messages
5,822
Reaction score
2,395
Location
SE Michigan
First Name
Scott
Vehicle(s)
Carroll Shelbys Soul Lives Under My GT350 Hood
Just talked to Nick Filippides at American racing headers and Chuck Watson at Watson engineering and they both said that the headers will be made from the standard 304 stainless .049 wall thickness on the standard 5.0l and all other cross plane engines to .064 wall thickness 304 stainless for the flat plane voodoo for vibration purposes. Once I do a base line stock pull at Watson I'll then install the JLT and dyno tune pull then a header and tune to compare. I've been also thinking about checking the intake port match and also to see if a throttle body will have a increase at all. Time will tell.
I've made custom headers for my other cars in the past and I've been wondering what a step header would do for this engine. It could help build a bit of torque.
 

Katastrophe

Well-Known Member
Joined
Nov 8, 2014
Threads
14
Messages
391
Reaction score
120
Location
MB, Canada
Vehicle(s)
2014 Honda Civic Sedan EX, 2014 Honda VFR800F
Here's a question...

Do you guys think 1 7/8" is big enough? Would there be any better gains to be had with larger headers, such as a 2"? Trial and error, I suppose...or flow testing, etc.
 
OP
OP
Voodooo

Voodooo

Banned
Banned
Banned
Joined
Nov 2, 2015
Threads
107
Messages
5,822
Reaction score
2,395
Location
SE Michigan
First Name
Scott
Vehicle(s)
Carroll Shelbys Soul Lives Under My GT350 Hood
Here's a question...

Do you guys think 1 7/8" is big enough? Would there be any better gains to be had with larger headers, such as a 2"? Trial and error, I suppose...or flow testing, etc.
2" is way to big. Bigger isn't better. And to be honest I think a 1-3/4" would be perfect. To big cost torque. That's why I was leaning more towards a 1-3/4" to 1-7/8" step header. Tube length 26"-32" primary and collector length all have to be taken into consideration. As do RPM AND the power band and type of racing that is being done. I've made a few headers before for my 401 Yates headed fox body that were 2" 2-1/8" step header with a rotational fire pattern. But on the voodoo everyone says their is no room for Tri-Y headers.
Sponsored

 
 




Top