Intake 5.7

Needinfothanks · 02-07-2007, 07:03 PM

There seems to be something holding my upper and lower manifold together from the inside. All bolts are out. Any ideas? Thanks.

bradrhale · 02-07-2007, 07:56 PM

upper and lower manifold?? the intake manifold is one piece. can you please be more descriptive.

Needinfothanks · 02-07-2007, 08:09 PM

I have a 99 suburban with the 5.7. It has a intake that is made of 2 peices. The lower half looks like a normal intake except it is only 2 inches high and another plasic smaller manifold bolts on top of it.

75K30 · 02-07-2007, 08:14 PM

Hope you do not have two pieces of intake manifold.

They can be stubborn sometimes, usually has a fair amount of silicone around the corners where it meets the block / heads. Be sure the dist. is out, and the valve covers are off. They do get in the way. Then I usually pry slightly between the intake and the block, in the center just above the water pump. It will not take too much to get it to "pop". The rest is gravy after that. You will be amazed at how heavy that thing is.

mrjohnwayne · 02-07-2007, 09:12 PM

no he's right. the 350 vortec had a 2 piece manifold. as for it not coming apart can't help you. I know they will but have never done it.

72'CaminoKid · 02-07-2007, 09:21 PM

i've got a 99 burb with the 5.7 too, i'll take a looka t it tomorrow and see if i got any advice... why are you pulling the intake jw?

Needinfothanks · 02-07-2007, 11:18 PM

I am leaking antifreeze from the gasket on the back side. The plastic top manifold is loose but there seems to be something inside holding it down and I don't want to break something by pulling to hard.?

03chevy · 02-08-2007, 06:51 AM

take the dis. out and take the bottom off dont worry about takin the top one off. i had one leak from the lower man. and its passanger side back.

Needinfothanks · 02-08-2007, 07:04 AM

Thanks. I think some of the bolts for the lower are under the upper manifold. I can only see 8 bolts, 2 in each corner. The chiltons manual show s 12. ???

mrjohnwayne · 02-08-2007, 10:01 AM

there are only 8

02-07-2007, 07:03 PM	#1
Needinfothanks Full Member Join Date: Jan 2007 Posts: 10	Intake 5.7 There seems to be something holding my upper and lower manifold together from the inside. All bolts are out. Any ideas? Thanks.

02-07-2007, 09:12 PM	#5
mrjohnwayne Moderator Join Date: Apr 2005 Location: Texas Posts: 3,221	no he's right. the 350 vortec had a 2 piece manifold. as for it not coming apart can't help you. I know they will but have never done it. __________________ John Wayne 2000 F-350 7.3L Powerstroke 4x4

02-07-2007, 09:21 PM	#6
72'CaminoKid Senior Member Join Date: Jun 2005 Posts: 2,329	i've got a 99 burb with the 5.7 too, i'll take a looka t it tomorrow and see if i got any advice... why are you pulling the intake jw? __________________ 99 suburban xlt 96 silverado 91 wrangler (my baby ) 08 Honday shadow 750 (my mistress)

02-08-2007, 06:51 AM	#8
03chevy Senior Member Join Date: Dec 2006 Location: jax,fl Posts: 1,063	take the dis. out and take the bottom off dont worry about takin the top one off. i had one leak from the lower man. and its passanger side back. __________________ A dirty mind is a terrible thing to waste!

02-08-2007, 10:01 AM	#10
mrjohnwayne Moderator Join Date: Apr 2005 Location: Texas Posts: 3,221	there are only 8 __________________ John Wayne 2000 F-350 7.3L Powerstroke 4x4

02-07-2007, 07:56 PM	#2
bradrhale Moderator Join Date: Apr 2006 Location: Texas Posts: 3,609	upper and lower manifold?? the intake manifold is one piece. can you please be more descriptive.

02-07-2007, 08:09 PM	#3
Needinfothanks Full Member Join Date: Jan 2007 Posts: 10	I have a 99 suburban with the 5.7. It has a intake that is made of 2 peices. The lower half looks like a normal intake except it is only 2 inches high and another plasic smaller manifold bolts on top of it.

02-07-2007, 08:14 PM	#4
75K30 Senior Member Join Date: Jul 2006 Posts: 2,636	Hope you do not have two pieces of intake manifold. They can be stubborn sometimes, usually has a fair amount of silicone around the corners where it meets the block / heads. Be sure the dist. is out, and the valve covers are off. They do get in the way. Then I usually pry slightly between the intake and the block, in the center just above the water pump. It will not take too much to get it to "pop". The rest is gravy after that. You will be amazed at how heavy that thing is.

02-07-2007, 11:18 PM	#7
Needinfothanks Full Member Join Date: Jan 2007 Posts: 10	I am leaking antifreeze from the gasket on the back side. The plastic top manifold is loose but there seems to be something inside holding it down and I don't want to break something by pulling to hard.?

02-08-2007, 07:04 AM	#9
Needinfothanks Full Member Join Date: Jan 2007 Posts: 10	Thanks. I think some of the bolts for the lower are under the upper manifold. I can only see 8 bolts, 2 in each corner. The chiltons manual show s 12. ???

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