LT-4 intake manifold vertification
Thread Starter
Racer
Joined: Apr 2002
Posts: 311
Likes: 0
From: Charleston S.C.
LT-4 intake manifold vertification
Are they any identifying numbers, marking,or factors to verify a LT-4 intake manifold? I have one that looks like a LT-4 manifold because it is powdercoated red. You can tell that all the machining was done after the powdercoating. I've heard that the LT-4 manifold does not have an egr valve, this one does.
Thanks,
Kerry
Thanks,
Kerry
Drifting
Joined: May 2001
Posts: 1,726
Likes: 1
From: COCOA Florida
Re: LT-4 intake manifold vertification (corvette4life)
flip it over and there is a stamped LT4 on the underside at the rear of the intake. do a search and someone posted a picture of one about 3-4 weeks ago. hope this helps
Instructor
Joined: Sep 2001
Posts: 130
Likes: 0
Re: LT-4 intake manifold vertification (corvette4life)
I did some port work on my LT4 intake, under the sheetmetal plate on the bottom of the intake I found LT4 cast into the manifold in fairly large letters. Well, I had a ... porting accident and ended up ordering a replacement through a GM dealer. The replacement did not have the same LT4 cast in, in fact I could not find any LT4 marks. Made me pretty unsure if it was the right thing, but a comparision of the features seemed to indicate it was the right thing. Both the orginal and the replacement have the EGR passages in them, they just get blocked off.
I know I have seen it posted here before, but anyone have a specific list of what is different between the LT1 and LT4 intakes?
Jeff
[Modified by powerslide91, 1:27 AM 6/30/2002]
I know I have seen it posted here before, but anyone have a specific list of what is different between the LT1 and LT4 intakes?
Jeff
[Modified by powerslide91, 1:27 AM 6/30/2002]
Safety Car
Joined: Jun 1999
Posts: 3,570
Likes: 3
From: Austin, Singapore, Kuala Lumpur, Houston, Dallas, Hong Kong, Elgin, etc.. Texas
Re: LT-4 intake manifold vertification (powerslide91)
Here is the photo of my LT4 intake manifold. You have to remove the oil shield to see the "LT4" casting mark.
[img]https://temp.corvetteforum.net/c4/tmezger/Head_Porting/LT4_heads_and_intake/lt4_intake_manifold2.jpg
[/img]
[img]https://temp.corvetteforum.net/c4/tmezger/Head_Porting/LT4_heads_and_intake/lt4_intake_manifold2.jpg
[/img]
Safety Car
Joined: Jun 1999
Posts: 3,570
Likes: 3
From: Austin, Singapore, Kuala Lumpur, Houston, Dallas, Hong Kong, Elgin, etc.. Texas
Re: LT-4 intake manifold vertification (powerslide91)
Here is the photo of my LT4 intake manifold. You have to remove the oil shield to see the "LT4" casting mark.
[URLhttp://temp.corvetteforum.net/c4/tmezger/Head_Porting/LT4_heads_and_intake/lt4_intake_manifold2.jpg][/URL]
[URLhttp://temp.corvetteforum.net/c4/tmezger/Head_Porting/LT4_heads_and_intake/lt4_intake_manifold2.jpg][/URL]
Safety Car
Joined: Jun 1999
Posts: 3,570
Likes: 3
From: Austin, Singapore, Kuala Lumpur, Houston, Dallas, Hong Kong, Elgin, etc.. Texas
Re: LT-4 intake manifold vertification (powerslide91)
Here is the photo of my LT4 intake manifold. You have to remove the oil shield to see the "LT4" casting mark.
[Modified by Mez, 10:57 AM 6/30/2002]
[Modified by Mez, 10:57 AM 6/30/2002]
