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LS1 vs N* throttle bodies by Grantman
Started on: 11-28-2014 08:42 AM
Replies: 6 (123 views)
Last post by: Grantman on 11-28-2014 06:34 PM
Grantman
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Report this Post11-28-2014 08:42 AM Click Here to See the Profile for GrantmanClick Here to Email GrantmanSend a Private Message to GrantmanEdit/Delete MessageReply w/QuoteDirect Link to This Post
Is there much difference between the LS1 TB and the N*? How hard is it to switch from one to the other? Is one better than the other?

I have a LS1 on a SC3800 (2000 GTP) and thinking out loud if I need to switch TB's to go to a Gen V and full stack intercooler. Or if current the current adapter for the LS1 will fit on the Gen V.

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1986 Fiero GT fastback SC3800 3.4 pulley, LS1 TB
1998 Jeep Grand Cherokee with "big boy" 5.9 motor
1983 Honda Goldwing 1100 Interstate

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hnthomps
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Report this Post11-28-2014 08:55 AM Click Here to See the Profile for hnthompsClick Here to Email hnthompsSend a Private Message to hnthompsEdit/Delete MessageReply w/QuoteDirect Link to This Post
I cannot really tell you what which Throttle Valve is the best match but I am currently running a N* tv with a full stack IC on a 3800 SC Series III engine and it appears to work very well.

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Grantman
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Report this Post11-28-2014 09:14 AM Click Here to See the Profile for GrantmanClick Here to Email GrantmanSend a Private Message to GrantmanEdit/Delete MessageReply w/QuoteDirect Link to This Post
reading on the Grand Prix forum and looking at pics it's obvious my adapter won't work on a Gen V so matter of finding one for a LS1. appears that's not as easy as finding an adapter for the N * TB. sounds like either will work and the N * requires a bit more modification for me since I'm already set up with a LS1. A guy over there makes N * adapters for the Gen V.
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JohnSmith
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Report this Post11-28-2014 02:21 PM Click Here to See the Profile for JohnSmithClick Here to Email JohnSmithSend a Private Message to JohnSmithEdit/Delete MessageReply w/QuoteDirect Link to This Post
Both are 75mm plates and have the same sensors and IAC valve. So as far as function is concerned they are the same. But the flanges will not be the same.
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ericjon262
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Report this Post11-28-2014 05:59 PM Click Here to See the Profile for ericjon262Send a Private Message to ericjon262Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by JohnSmith:

Both are 75mm plates and have the same sensors and IAC valve. So as far as function is concerned they are the same. But the flanges will not be the same.



I used a a flange adapter for a N* on my 3500, and I'm running a 98 LS1 TB...
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Will
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Report this Post11-28-2014 06:03 PM Click Here to See the Profile for WillClick Here to Email WillSend a Private Message to WillEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by JohnSmith:

Both are 75mm plates and have the same sensors and IAC valve. So as far as function is concerned they are the same. But the flanges will not be the same.


'93-'99 Northstars use a unique 4 bolt flange. '00 and newer use the same three bolt pattern as the LS1, BUT I don't know if the IAC and PCV passages are the same.
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Grantman
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Report this Post11-28-2014 06:34 PM Click Here to See the Profile for GrantmanClick Here to Email GrantmanSend a Private Message to GrantmanEdit/Delete MessageReply w/QuoteDirect Link to This Post
Pretty much what Ryan at sinister was saying. LS1 and the 00 and after northstars are very similar but not sure if they can be used interchangeably.
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