proper silicone diameter to fit over OEM 90mm DBW throttle body? - LS1TECH - Camaro and Firebird Forum Discussion



Generation IV Internal Engine 2005-2014 LS2 | LS3 | LS7 | L92 | LS9

proper silicone diameter to fit over OEM 90mm DBW throttle body?

Reply
 
Thread Tools Search this Thread
Old 04-18-2012, 10:53 AM   #1
9 Second Club
Thread Starter
iTrader: (29)
 
Join Date: Apr 2006
Location: Wichita, KS
Posts: 201
Default proper silicone diameter to fit over OEM 90mm DBW throttle body?

I did some searching, lot of rif raf. If I have a stock 90mm DBW throttle body, what size of silicone adapter do I need? Seems like 4.25" is the answer, but some say a heated/slitted 4".

Firm answer would be appreciated.
TJ
NOS327 is offline   Reply With Quote
Old 04-18-2012, 01:06 PM   #2
9 Second Club
Thread Starter
iTrader: (29)
 
Join Date: Apr 2006
Location: Wichita, KS
Posts: 201
Default

Woops.. should be in external engine forum. Maybe a mod can move this thread
NOS327 is offline   Reply With Quote
Old 04-18-2012, 09:16 PM   #3
TECH Addict
iTrader: (2)
 
Darkman's Avatar
 
Join Date: Apr 2009
Location: Spring, Texas
Posts: 2,173
Default

For what it is worth the GM seal/gasket is part number 12576549 and is Felpro number 61436.
Darkman is offline   Reply With Quote
Old 04-18-2012, 11:02 PM   #4
9 Second Club
Thread Starter
iTrader: (29)
 
Join Date: Apr 2006
Location: Wichita, KS
Posts: 201
Default

No. I mean a silicone hose/elbow that would mate your air inlet duct to the throttle body. Not the tb to intake o-ring.
NOS327 is offline   Reply With Quote
Old 04-19-2012, 06:19 AM   #5
TECH Addict
iTrader: (2)
 
Darkman's Avatar
 
Join Date: Apr 2009
Location: Spring, Texas
Posts: 2,173
Default

Quote:
Originally Posted by NOS327 View Post
No. I mean a silicone hose/elbow that would mate your air inlet duct to the throttle body. Not the tb to intake o-ring.
Sorry, my bad - I saw the word silicone and was thinking silicone seal. In any event the answer is 4.0 inches. I am running a 90mm LS2 DRW and it measures 3.960 at the inlet, which includes a slight lip. (This is the same as my stock LS6 DBW 78mm throttle body which allowed me to use the same inlet air tube when I upgraded.)
Darkman is offline   Reply With Quote
Old 04-19-2012, 05:23 PM   #6
9 Second Club
Thread Starter
iTrader: (29)
 
Join Date: Apr 2006
Location: Wichita, KS
Posts: 201
Default

Awesome, thanks!
NOS327 is offline   Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
AC Delco 217-1617 LS2/3/7 DBW Throttle Body kenp Parts Classifieds 2 05-08-2017 07:28 AM
sold LS2 DBW Throttle Body 90mm 12570790 sold Huss666 Parts Classifieds 2 03-23-2017 07:28 PM
throttle body intake elbow - 4" inlet to stock throttle body oval? chief455 Forced Induction 5 03-24-2013 12:22 PM
airflow experts chime in! throttle body rotation 260B4U Generation IV External Engine 2 09-16-2012 08:41 PM
dbw throttle body interchangability miatainthe10s Conversions & Hybrids 5 03-16-2012 09:30 PM


Tags
100mn, 35, 90mm, body, corvette, dbw, diameter, dimensions, hose, intake, ls1tech, ls3, silicone, size, throttle, throttlebody

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 05:58 AM.


 
  • Ask a Question
    Get answers from community experts
What's your question?
Send