![]() |
|
Homepage | Garage | Wiki | Register | Members List | Social Groups | Calendar | Search | Today's Posts | Mark Forums Read |
![]() |
|
Thread Tools |
![]() |
#1 |
One Slow Automatic
Drives: 2017 GS 2010 CAMARO SS Join Date: Mar 2010
Location: NC NJ NY DMV THE BAYAREA
Posts: 872
|
CNC ported TB VS hand polished TB
Whats the difference in performance and HP between the two?
__________________
650HP 725TQ 2010 CAMARO SS STOCK 2017 GRAND SPORT
|
![]() |
![]() |
![]() |
#2 |
knows 2 facts about ducks
Drives: ...and they're both wrong Join Date: Aug 2009
Location: The HMS Invincible
Posts: 26,271
|
polishing the inside of a TB actually hurts airflow first off, and the VMax ported TB is proved to be the best on the market.
|
![]() |
![]() |
![]() |
#3 |
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Drives: 2010 Summit White 1SS Join Date: Feb 2012
Location: Vance Alabama
Posts: 6,817
|
Same difference as with hand ported cylinder heads and CNC cut ones.
__________________
|
![]() |
![]() |
![]() |
#4 |
Brianskeet
|
You have hit on a subject that has seen a lot of trafic. The short version is the VMax CNC ported throttle body is 100% repeatable due to the accuracy of modern CNC machinines. They did the R&D time to come up with a porting job that produces fantastic throttle response and yes some power. No porting job will produce huge power it is just not possible, but VMax produces what is available. The much more valuable part of the porting is crisp precise throttle response. I saw it as part of a "breathing package" for my LS motor. Intake, scoop, washer relocate, and ported throttle body. That took care of the inhale. ARH long tubes and Corsa took care of the exhale.
__________________
|
![]() |
![]() |
![]() |
#5 |
![]() Drives: C6 Z06 Join Date: Nov 2010
Location: Houston TX
Posts: 109
|
The engine wont care how the shape was made. The whole point of having a CNC program is repeatability and time - its highly repeatable and takes practically "no" time compared to performing the action by hand.
And FYI NASCAR heads do the initial porting on a CNC and they finish off the porting by hand... there are just certain spots the CNC machine cant reach very well. |
![]() |
![]() |
![]() |
#6 |
Drives: 2011 Camaro SS Join Date: Dec 2012
Location: Bradenton, FL
Posts: 2,613
|
All the VMAX throttle bodies are CNC spiral ported for consistency. Not saying hand-ported ones do not work, but there is always a human error factor involved. Actually out of the hand-ported TB's my first choice would be Bo White...
Back to back dyno graphs comparing Stock to VMax. |
![]() |
![]() |
|
|
![]() |
Thread Tools | |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
V6 VMAX CNC TB Removal/Installation | DREV LSX | Camaro V6 LLT Engine, Exhaust, and Bolt-Ons | 40 | 03-27-2012 05:05 PM |
*****VMAX CNC Ported Throttle Bodies for V6***** | DREV LSX | V6 Bolt-Ons & Tunes | 76 | 12-12-2011 12:38 PM |
Mast Motorsports now has 14 different fully ported CNC Cylinder Heads | MastMotorsports | Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons | 22 | 09-22-2010 12:31 AM |