Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com
 
Redline Goods
Go Back   Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com > Engine | Drivetrain | Powertrain Technical Discussions > Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons

Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

Reply
 
Thread Tools
Old 03-24-2012, 05:57 PM   #1
1985airborne
NOT GIVING ONE F&*K
 
1985airborne's Avatar
 
Drives: BLACK SS 2010 & 2009 SUBURBAN Z71
Join Date: Mar 2010
Location: NC NJ NY DMV
Posts: 707
CNC ported TB VS hand polished TB

Whats the difference in performance and HP between the two?
__________________
L99 W/TVS2300 W/COG DRIVE, HENNESSEY CAI, ARH HEADERS, CORSA EXHAUST, RX DV CC, ZL1 6 PISTON BRAKES, CTS-V ROTORS, ZL1 FRONT AND REAR SWAY BARS, MSD FVBP, ZR1 3BAR MAP SENSOR, ID 850's, PCM TRANS COOLER, YANK 2800, JRE ST, MELLING HV OP, ECS BIG BLOWER CAM, PAC SPRINGS, GM CNC PORTED HEADS, C5R TC, ARP HEAD/CAM/CRANK BOLTS, COMP CAM TRUNION UPGRADE, LS9 HEAD GASKETS, ZL1 FUEL PUMP, NGK TR7, 160 TSAT, GOODRIDGE STAINLESS STEEL BRAKE LINES, RETRO SS EMBLEMS, GM BLADE DOVE TAIL SPOILER, HEAD LIGHT ARMOR STEALTH HEAD/SIDE/REAR LIGHTS, ZL1 ACCEL/BRAKE PEDALS, H.U.D., NITTO 555R

592HP 699RWTQ
1985airborne is offline   Reply With Quote
Old 03-24-2012, 06:15 PM   #2
The Stig
knows 2 facts about ducks
 
The Stig's Avatar
 
Drives: ...and they're both wrong
Join Date: Aug 2009
Location: The HMS Invincible
Posts: 26,690
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.
__________________
Click to view my build thread
The Stig is offline   Reply With Quote
Old 03-24-2012, 08:17 PM   #3
Bo White
Account Suspended
 
Drives: 2010 Summit White 1SS
Join Date: Feb 2012
Location: Vance Alabama
Posts: 2,418
Same difference as with hand ported cylinder heads and CNC cut ones.
Bo White is offline   Reply With Quote
Old 03-24-2012, 09:01 PM   #4
Brianskeet
Brianskeet
 
Brianskeet's Avatar
 
Drives: RJTC 1SS RS L99
Join Date: Sep 2010
Location: Crestview FL
Posts: 817
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.
__________________
ARH 1 7/8 coated LT, High flows, Corsa L99 exhaust, Vmax CNC throttle body, Elite Engineering catch can and tunnel brace, C.A.I. Apex Washer relocation and scoop, Janetty Tune, MSD wires, DEI heat shields, RB rotors and pads, Mike the powder coater calipers, pedders lines, Forgestar F14's, Gorilla nutz, MTI spoiler finished by Gary, Gary's Customz Bow Ties, Side Markers and Tails tinted, Bezels matte black, Badges deleted, Windows Tinted, AAC DRL P13W lights, AAC tinted LED reverse lights, AAC LED interior lights, RPI match painted DRL Bezels, Lis plate frame, Lloyds mats
Brianskeet is offline   Reply With Quote
Old 03-25-2012, 11:13 PM   #5
briancb1
 
briancb1's Avatar
 
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.
briancb1 is offline   Reply With Quote
Old 02-12-2013, 05:04 PM   #6
Matt @ FSP

 
Matt @ FSP's Avatar
 
Drives: 2011 Camaro SS
Join Date: Dec 2012
Location: Bradenton, FL
Posts: 2,514
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.
Attached Images
  
Matt @ FSP is offline   Reply With Quote
 
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
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


All times are GMT -5. The time now is 08:01 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.