Welcome to Camaro Z28!

Welcome to CamaroZ28.Com, the ultimate Source for Camaro enthusiasts! Here you can join over 90,000 Camaro enthusiasts from around the world discussing all things related to Camaros and more. You are currently viewing as a guest which gives you limited access to view discussions

To gain full access to our forums you must register for a free account. As a registered member you will be able to:
  • Participate in over 40 different forums and search/browse from over 5 million posts.
  • Upload your Camaro details to your Garage
  • Post photos, respond to polls and access other special features
  • Gain access to our free marketplace to buy, sell and trade Camaros, parts and more.
All this and much more is available to you absolutely free when you register for an account, so join our community today today!

If you have any problems with the registration process or your account login, please contact support.


Go Back   CamaroZ28.Com Message Board > 1967-2002 Powertrain Discussion > LT1 Based Engine Tech
Sign in using an external account
Register Forgot Password?


Reply Post New Thread
 
 
LinkBack Thread Tools Search this Thread Display Modes
Old 10-23-2010, 11:51 AM   #1
Registered User
 
Join Date: Aug 2010
Location: New York
Posts: 100
Garage
Throttle body size

I just got a 58mm ported intake manifold for my 95 z28. Before I put it in this weekend I plan on getting a ported throttle body aswell. I can obviously put in put in a ported throttle body up to 58mm that will work with the intake manifold, but I was wondering if I should even consider a 52 or 54mm one instead?
This ad is not displayed to registered members.
Register your free account today and become a member on CamaroZ28.com!
fitz796 is offline   Reply With Quote
Old 10-23-2010, 12:17 PM   #2
Registered User
 
Ricardo's Avatar
 
Join Date: Feb 2004
Posts: 661
Garage
If you dont have any additional mods just use the stock throttle body.
If you have ported heads, cam and headers then you should also consider a bigger TB.
__________________
BLACK 396 A4 1996 Z28 TFS LE3 HDS LE BULLET CAM-LPP SS LT'S-STRANGE 3.73 12 Bolt
BOGARTS & M/T ET DRAG
SILVER LE2 355 M6 1997 Z28-BOGARTS & M/T ET DRAG-DD
RED '87 RX7/LT1 385 LE2 DART PRO1 HEADS- CUSTOM LE CAM-RUNNING HARD
Ricardo is offline   Reply With Quote
Old 10-23-2010, 12:36 PM   #3
Registered User
 
Join Date: Aug 2010
Location: New York
Posts: 100
Garage
thanks for the feedback. good to know
fitz796 is offline   Reply With Quote
Old 10-23-2010, 02:31 PM   #4
Registered User
 
Join Date: Feb 2004
Posts: 4,809
Also be aware a bigger TB without retuning a A4 car for it will do transmission damage over time.

I would not bother swapping the intake.
__________________
Dwayne
96 Caprice with AI 200cc package 11.567 at 115.9
96capricemgr is offline   Reply With Quote
Old 10-23-2010, 02:48 PM   #5
Registered User
 
Join Date: Aug 2010
Location: New York
Posts: 100
Garage
Quote:
Originally Posted by 96capricemgr View Post
Also be aware a bigger TB without retuning a A4 car for it will do transmission damage over time.

I would not bother swapping the intake.
Sorry for the stupidity but a4?
fitz796 is offline   Reply With Quote
Old 10-23-2010, 07:18 PM   #6
Super Moderator
 
Injuneer's Avatar
 
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 41,257
Garage
4-speed automatic transmission = A4. In 93, a 4L60, 94-02 a 4L60E
__________________
Fred

94 Formula A3+1: 381ci all-forged stroker - Callies Stealth, Oliver 5.85 billet rods, BME nitrous pistons / CNC LT4 heads / Comp Cams custom solid roller / TH400 + GearVendors OD / Strange 12-bolt - 4.11's / 300-shot N2O / Spohn suspension / 6-pt roll bar with integrated SFC's / AutoMeter instrumentation / MoTeC M48Pro engine management system / a few other odds 'n ends. 800HP/800LB-FT at the flywheel.
Injuneer is offline   Reply With Quote
Old 10-24-2010, 08:06 AM   #7
Registered User
 
Join Date: Jul 2002
Location: Phoenix, AZ
Posts: 1,279
Also be aware aftermarket TB's are commonly designed to dump idle air into the main plenum instead of the Idle Air Plenum passages GM designed in our intakes. This screws up your idle. I would be prepared to tune if you want it acting like stock again.
__________________
88 RX7 10AE with LT1/M6 conversion. forged pistons and rods 383. 12.4 SCR / 9.4 DCR. Comp Cams 236/242 112 LSA, worked AFR 190's, 58MM TB, CC 1.6 Pro Mags. My own tune.

95 M6 Firehawk #588, original engine taken to 383. Sold...
95Blackhawk is offline   Reply With Quote
Old 10-24-2010, 04:14 PM   #8
Registered User
 
Join Date: Aug 2010
Location: New York
Posts: 100
Garage
well im not sure if makes a difference but mine is a 6 speed....not automatic
fitz796 is offline   Reply With Quote
Old 10-24-2010, 05:32 PM   #9
Super Moderator
 
Injuneer's Avatar
 
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 41,257
Garage
The A4 is shifted by the PCM, based on throttle position, etc. If you alter the throttle body, you alter air flow vs. throttle position, and that throws the shifting off, requiring a reprogram. This is not an issue with the M6 (6-speed manual).

Might want to add a "signature" with basic info about your car - year, model, engine, trans and any major mods. That makes it easier for people to help you.
__________________
Fred

94 Formula A3+1: 381ci all-forged stroker - Callies Stealth, Oliver 5.85 billet rods, BME nitrous pistons / CNC LT4 heads / Comp Cams custom solid roller / TH400 + GearVendors OD / Strange 12-bolt - 4.11's / 300-shot N2O / Spohn suspension / 6-pt roll bar with integrated SFC's / AutoMeter instrumentation / MoTeC M48Pro engine management system / a few other odds 'n ends. 800HP/800LB-FT at the flywheel.
Injuneer is offline   Reply With Quote
Old 10-24-2010, 05:32 PM
 
Reply Post New Thread

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 11:27 PM.


Copyright © 1996-2013 CamaroZ28.Com. All rights reserved.

Garage Plus vBulletin Plugins by Drive Thru Online, Inc.