LIM porting and the L27? pic requests. - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

Reply
 
 
 
Thread Tools Search this Thread
Old 03-27-2007, 09:40 PM   #1
Senior Member
Posts like a Camaro
Thread Starter
 
Join Date: Apr 2006
Location: maitland fl
Posts: 858
Thanks: 0
Thanked 0 Times in 0 Posts
Marik_bathory is on a distinguished road
Default LIM porting and the L27? pic requests.

so i've been reading up on the LIM porting threads for the L36 and i've been wondering if any of the gains seen here could transfer over to the L27? obviously any smoothing and port matching is going to benifit any motor. the real issue is going to be porting the very long cross sectional runner where it meets the Upper manifold.

does anyone have a pic of the bottom of the L27 upper alluminum manifold (EGR-less) how about the gasket?
Marik_bathory is offline   Reply With Quote
Old 03-28-2007, 01:50 AM   #2
Senior Member
Certified Car Nut
 
Join Date: Jun 2003
Posts: 15,928
Thanks: 0
Thanked 0 Times in 0 Posts
BonneMeMN is on a distinguished road
Default

IIRC the manifold mating surfaces are about the same between the metal and composite manifolds.
BonneMeMN is offline   Reply With Quote
Old 03-28-2007, 06:21 AM   #3
Senior Member
True Car Nut
 
Join Date: Nov 2002
Location: Texarkana, Texas
Posts: 6,041
Thanks: 0
Thanked 0 Times in 0 Posts
Damemorder is on a distinguished road
Default

Quote:
Originally Posted by BonneMeMN
IIRC the manifold mating surfaces are about the same between the metal and composite manifolds.
x2, IIRC.
Damemorder is offline   Reply With Quote
Old 03-28-2007, 08:23 PM   #4
Senior Member
Posts like a Camaro
Thread Starter
 
Join Date: Apr 2006
Location: maitland fl
Posts: 858
Thanks: 0
Thanked 0 Times in 0 Posts
Marik_bathory is on a distinguished road
Default

is the alluminum manifold a two peice like the composite one or is it all one peice?
Marik_bathory is offline   Reply With Quote
Old 03-28-2007, 08:54 PM   #5
Senior Member
Certified Car Nut
 
Join Date: Mar 2003
Posts: 12,432
Thanks: 0
Thanked 0 Times in 0 Posts
J Wikoff is on a distinguished road
Default

Two piece.
J Wikoff is offline   Reply With Quote
Old 03-28-2007, 08:55 PM   #6
Senior Member
Posts like a Camaro
Thread Starter
 
Join Date: Apr 2006
Location: maitland fl
Posts: 858
Thanks: 0
Thanked 0 Times in 0 Posts
Marik_bathory is on a distinguished road
Default

just to specify here... the upper manifold is a two peice. like the composit. the outside and then an insert?
Marik_bathory is offline   Reply With Quote
Old 03-28-2007, 08:59 PM   #7
Senior Member
Certified Car Nut
 
Join Date: Mar 2003
Posts: 12,432
Thanks: 0
Thanked 0 Times in 0 Posts
J Wikoff is on a distinguished road
Default

Oh, I think the upper is one piece. I thought you meant one piece like a pre-92.
J Wikoff is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Porting Throttle Body on L27? xtremerevolution Performance, Brainstorming & Tuning 4 11-06-2008 02:23 PM
Porting LIM on L27 xtremerevolution Performance, Brainstorming & Tuning 18 11-03-2008 10:42 PM
General Cylinder Head Porting/ Intake Manifold Porting 101 Speedster400 Performance, Brainstorming & Tuning 6 11-07-2007 10:51 AM
Black94SSEi's LIM gaskets and porting (new pics) BillBoost37 General GM Chat 27 09-18-2006 09:06 PM
Canadian/Toronto Int'l Autoshow: Pic Requests? repinS Lounge 5 02-10-2004 08:18 PM


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 -4. The time now is 03:50 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.