LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Holes in the LT1 Intake Manifold?? HELP!!

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Old 09-27-2007, 09:51 AM
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Default Holes in the LT1 Intake Manifold?? HELP!!

What are all of the holes for on the sides of the lt1 intake manifold??

How is it supposed to look on a 94 camaro when its all together with no AIR or EGR systems?

mine didnt have them when i bought the car so im also wondering what should i use to block off the holes if i can. Ive had taoe covering them since i got it back from the machine shop but im finally getting around to trying to get this thing running... I have already blocked off the EGR but the AIR system (i think) holes on the back of the passenger side of the intake manifold is still open and i would rather not have to wait to order some crap off of ebay if there is an easier way to make it happen so i can get the car running now.

The holes on the driver side of the intake manifold i also dont know what to do with im assuming that some of them have to do with the egr but what should i do with them?
Old 09-27-2007, 09:56 AM
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Also while i was at the junkyard looking at other lt1s trying to figure out what mine is supposed to look like when its together i found some kind of sensor looking thing that went on the passenger side of the intake. It had what appears to be a fuel line going to it and there is another spot on the sensor thing for the line to come back out to the throttle body from what i can tell.. do i need that or can i forget about it?
Old 09-27-2007, 10:04 AM
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Throw some pics up bro..
Old 09-27-2007, 10:08 AM
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k ill do that ASAP .. im by a friends house right now using his internet but ill try and make it over to my house and bring a camera.
Old 09-27-2007, 11:16 AM
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where can i upload the pictures?? the server wont allow me to put them up with my post
Old 09-27-2007, 11:21 AM
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Originally Posted by z28hustle
Also while i was at the junkyard looking at other lt1s trying to figure out what mine is supposed to look like when its together i found some kind of sensor looking thing that went on the passenger side of the intake. It had what appears to be a fuel line going to it and there is another spot on the sensor thing for the line to come back out to the throttle body from what i can tell.. do i need that or can i forget about it?

I believe you're talking about your EVAP purge solenoid.

Is this it? http://shbox.com/1/evap_sol.jpg
Old 09-27-2007, 11:24 AM
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Originally Posted by z28hustle
where can i upload the pictures?? the server wont allow me to put them up with my post
you can upload the pictures to photobucket.com then copy the link onto here
Old 09-27-2007, 11:25 AM
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tell me if this link works guys

http://www2.snapfish.com/thumbnailsh...4/t_=107541634
Old 09-27-2007, 11:27 AM
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Originally Posted by Rowdy94
I believe you're talking about your EVAP purge solenoid.

Is this it? http://shbox.com/1/evap_sol.jpg

ok yea that is definitely part of what im talking about.. what is it and do i need all of that stuff? HVAC and all that jazz...
Old 09-27-2007, 11:36 AM
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I would imagine you could delete it somehow. EVAP is a system that pulls fumes from you gas tank with vacuum. It basically keeps you from breathing them. You can remove everything, then install a filter or valve of some sort on the plastic line. I'm almost positive you'll set off the SES light with it deleted though.
Old 09-27-2007, 11:40 AM
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ok im trying to put my car together so i can drive it.. if i need it how do i install it and where does it go

BTW

can anyone see the pictures that i put on that link
Old 09-27-2007, 11:57 AM
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cmon guys help me out!!

Also, please tell me what pic youre talking about and what needs to be there so that i can get this beast running!!! i gotta get back to helping hang some sheetrock right quick but i would really appreciate any help you guys could provide me with.. ill definitely be back to see what you guys are saying.
Old 09-27-2007, 12:15 PM
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Originally Posted by z28hustle
cmon guys help me out!!

Also, please tell me what pic youre talking about and what needs to be there so that i can get this beast running!!! i gotta get back to helping hang some sheetrock right quick but i would really appreciate any help you guys could provide me with.. ill definitely be back to see what you guys are saying.
You should have two, one runs to your fuel pressure regulator (1/8" vacuum line) and 1/4" npt fitting into the intake (the other runs to some gizmo forget what, try shbox.com). There are three on driver side, one is for the evap I think and the other ports over to the pass side underneath the throttle body. The main one is for your brake booster vacuum. Try this website for some good diagrams http://shbox.com/page/index.html




edit: found some more pics that may help you out.








Last edited by -PEPE-; 09-27-2007 at 12:27 PM.
Old 09-27-2007, 02:02 PM
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so could i unscrew those metal things coming out of the intake? and then just screw them into mine? It looks like im about to have to take another trip to the junkyard...
Old 09-27-2007, 02:10 PM
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what do i do about the holes for the intake that are for the egr since its been removed already??
Old 09-27-2007, 02:23 PM
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Put a pipe plug in it or get a vaccuum port cap and leave the fitting in it.

When i put the 355 in my car I moved the evap solenoid back to where the egr used to be. Then I just extended the vent line back there to it with a barb and some more rubber fuel line, and made a hard line from the evap solenoid to the tb and tied it to the steam pipe.

On the drivers side I looped the pcv valve right back into the intake where the opti vent is hooked up from the factory. and the opti vent is hooked up to the port right under the tb.

I know it sounds complicated, but it got rid of a bunch of vacuum lines and crap all over the top of the motor. The stock configuration on the lt1 is the dumbest thing I have ever seen you have the same line crossing the intake 3-4 times for no reason at all.
Old 09-27-2007, 02:24 PM
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Get some vacuum caps and cap them off. No biggie.
Old 09-27-2007, 03:16 PM
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so who knows which ones i can cap off and what sizes they should be??
Old 09-28-2007, 09:18 AM
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TTT .... Anyone??? what do i need to have and where should it be going im kinda lost here...



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