Mufflex...just made my purchase
Registered User
Joined: Jul 2004
Posts: 1,174
From: MI
I lost my brakes after I completely re-worked the ATI intake section. I was amazed how restrictive those rubber flexable ducting components are. I lost my brakes with 3"Hg idle and 13"Hg best @ cruz. I looked @ the hydra boost. Alot of work changing that out. So, I found a small vac pump system made by SSBC available @ Summit. Alot easier to install. Since I did not have any space up front in the motor compartment, I mounted it in the rear pan area. Now I have brakes. SSBC recommends 16"Hg minimum for brakes.
There's always something else when modding.
There's always something else when modding.
Registered User
Joined: Mar 2001
Posts: 564
From: Huntington, W.V. 25701
I lost my brakes after I completely re-worked the ATI intake section. I was amazed how restrictive those rubber flexable ducting components are. I lost my brakes with 3"Hg idle and 13"Hg best @ cruz. I looked @ the hydra boost. Alot of work changing that out. So, I found a small vac pump system made by SSBC available @ Summit. Alot easier to install. Since I did not have any space up front in the motor compartment, I mounted it in the rear pan area. Now I have brakes. SSBC recommends 16"Hg minimum for brakes.
There's always something else when modding.
There's always something else when modding.
Thread Starter
Registered User
Joined: Sep 2007
Posts: 397
From: FL
I lost my brakes after I completely re-worked the ATI intake section. I was amazed how restrictive those rubber flexable ducting components are. I lost my brakes with 3"Hg idle and 13"Hg best @ cruz. I looked @ the hydra boost. Alot of work changing that out. So, I found a small vac pump system made by SSBC available @ Summit. Alot easier to install. Since I did not have any space up front in the motor compartment, I mounted it in the rear pan area. Now I have brakes. SSBC recommends 16"Hg minimum for brakes.
There's always something else when modding.
There's always something else when modding.
Registered User
Joined: Jul 2004
Posts: 1,174
From: MI
Easy to search the Summit website for SSBC and/ or Vac pumps.
Pump works good, but, you should re-torque the fasteners in the vac head since there is vibration of the pump every 3 to 4 months. It can also be a source of noise, so, better if it is located in the motor compartment or outside the cab. I mounted my Vac pump inside-rear since there is alot of noise with the mods I have and I usually listen the the engine noise.
I do not run a vac receiver on the Vac booster pump. It pulls about 20"Hg. I did wire an on/off switch so I can divert all electrical power to start the engine, then, turn on the pump.
Cam...
CamMotion,,,
231/240* @ 0.050" 114lsa 0.538/0.560" lift. 110* intake centerline. Currently use Comp ProMag 1.52:1 RR's. I also run an AFR rev kit with AFR 190 heads.
Pump works good, but, you should re-torque the fasteners in the vac head since there is vibration of the pump every 3 to 4 months. It can also be a source of noise, so, better if it is located in the motor compartment or outside the cab. I mounted my Vac pump inside-rear since there is alot of noise with the mods I have and I usually listen the the engine noise.
I do not run a vac receiver on the Vac booster pump. It pulls about 20"Hg. I did wire an on/off switch so I can divert all electrical power to start the engine, then, turn on the pump.
Cam...
CamMotion,,,
231/240* @ 0.050" 114lsa 0.538/0.560" lift. 110* intake centerline. Currently use Comp ProMag 1.52:1 RR's. I also run an AFR rev kit with AFR 190 heads.
Registered User
Joined: May 2002
Posts: 195
From: Rancho Cucamonga ,CA
What power level is the 3.5" Mufflex with Flowmaster Race good for? I have this system with the long tube Y pipe and hooker 1-3/4 primaries on an older motor that made 450hp. Now with my new motor making close to 800 I'm thinkin it's a restriction. I'd hate to get rid of it, it's a really nice system.
Registered User
Joined: Mar 2002
Posts: 2,743
From: Baton Rouge, LA, USA
Contrary to popular belief, supercharged motors are much more tolerant of exhaust pressure than NA or turbo motors, so you may be ok.
BTW, improving the exhaust WILL NOT reduce intake vacuum. Nor will a CAI.
BTW, improving the exhaust WILL NOT reduce intake vacuum. Nor will a CAI.
Registered User
Joined: Feb 2008
Posts: 502
From: Central Mass and NH
heres mine: (spintech muffler with 4" catback)
http://smg.photobucket.com/albums/v2...WS6Startup.flv
I have the spintech and its actually pretty quiet at idle. Im thinking about getting a 4" cutout. What other options do i have if i wanted to swap out mufflers? I have hooker LT's into a mufflex Y pipe and clearance sucks!!
http://smg.photobucket.com/albums/v2...WS6Startup.flv
I have the spintech and its actually pretty quiet at idle. Im thinking about getting a 4" cutout. What other options do i have if i wanted to swap out mufflers? I have hooker LT's into a mufflex Y pipe and clearance sucks!!
Registered User
Joined: Mar 2002
Posts: 2,743
From: Baton Rouge, LA, USA
Registered User
Joined: Feb 2008
Posts: 502
From: Central Mass and NH
Registered User
Joined: Mar 2002
Posts: 2,743
From: Baton Rouge, LA, USA
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