Ford Shelby GT500 Forum banner
1 - 10 of 10 Posts

·
Registered
Joined
·
12 Posts
Discussion Starter · #1 ·
I HAVE 2008 GT500 WITH A JLT Carbon Fiber Air Intake,Metco 2.6 Supercharger Pulley,JBA headers with a Magnaflow 3.0" Cat-Back System,Metco Auxiliary Idler pulley,AFCO Pro-Series Dual Pass Heat Exchanger,4.10 gears with 305/45/18 drag tires,Evolution Performance Custom Tuned SCT X3.now if i put overdrive balancer and if i put a 2.6 or 2.8 upper pulley will i gain any power.
 

·
Registered
Joined
·
212 Posts
I HAVE 2008 GT500 WITH A JLT Carbon Fiber Air Intake,Metco 2.6 Supercharger Pulley,JBA headers with a Magnaflow 3.0" Cat-Back System,Metco Auxiliary Idler pulley,AFCO Pro-Series Dual Pass Heat Exchanger,4.10 gears with 305/45/18 drag tires,Evolution Performance Custom Tuned SCT X3.now if i put overdrive balancer and if i put a 2.6 or 2.8 upper pulley will i gain any power.
You should get a few more lbs of boost= more hp
What drag 305/45/18 radial are you running?
 

·
Registered
Joined
·
51 Posts
i have the 2.6 upper and just got my 10% od lower. I will be putting it on in the next week or so and then get a new dyno tune. ill let u know what gains i get, im expecting about 16 psi (total) and 30 or more rwhp gain.
 

·
Registered
Joined
·
212 Posts
im running the nitto
thanks, stock wheels? is your car lowered? sorry for all the questions, but I've been looking for a 305/40/18, no luck. I see the 305/45/18 are 28.78 overall dia and just want to make sure they will work for me.
 

·
Premium Member
Joined
·
189 Posts
Some have made claims, but I've yet to see any dynographs from 2.6 upper + 10% lower, complete with air temp data. It's hard to say how hot the stock blower will get when run that hard.
 

·
Registered
Joined
·
51 Posts
Some have made claims, but I've yet to see any dynographs from 2.6 upper + 10% lower, complete with air temp data. It's hard to say how hot the stock blower will get when run that hard.


Steggy said at 18 psi he is seeing just over 600 rwhp. It's on his website.
 
1 - 10 of 10 Posts
Top