what are these threaded holes on my intake manifold?
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Joined: Jan 2012
Posts: 55
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From: Pelham, AL
Car: 1992 Camaro RS
Engine: 305 5.0L TBI
what are these threaded holes on my intake manifold?
ever since i've had my car i've noticed these two small holes on the front half of my intake manifold, they're threaded i think. is it for some aftermarket part? should something be plugging them?
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Posts: 323
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From: Nowthen, MN
Car: 87 monte aerocoupe
Engine: 383 HSR w/ novi 2000
Transmission: Built 4l80e circle d converter
Axle/Gears: Currie 9" 3.89 gears
Re: what are these threaded holes on my intake manifold?
I am sure those are for a temp sensor or the port to the heater core. Both will be threaded and should be capped if not in use.
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Joined: Jan 2012
Posts: 84
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From: Central Square, NY
Car: 1984 Camaro sport coupe
Engine: 5.0(H/O) 305 carb'd
Transmission: TCI St. Fitr stge 2 700r4 man.valve
Axle/Gears: stock gears, Limited Slip
Re: what are these threaded holes on my intake manifold?
go to local parts store and they will sell plugs. just tell them what for and they will steer you in right direction. pepboys, NAPA, advanced auto, O Rileys, 
Last edited by '84thunder; Feb 8, 2012 at 10:59 AM. Reason: im a retard and cant type
Member
iTrader: (9)
Joined: Feb 2009
Posts: 323
Likes: 3
From: Nowthen, MN
Car: 87 monte aerocoupe
Engine: 383 HSR w/ novi 2000
Transmission: Built 4l80e circle d converter
Axle/Gears: Currie 9" 3.89 gears
Re: what are these threaded holes on my intake manifold?
I believe they are 3/8 pipe thread. You can get in either a normal plug with a hex head or with a recessed allen head.
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Joined: Apr 2005
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From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: what are these threaded holes on my intake manifold?
then it will become obvious to you what to do as soon as you add coolant
I assume you are talking about the 2 small bolt holes on pass side?
Support bracket for fuel rails goes there.Holes are blind and can be left empty
Last edited by vetteoz; Feb 8, 2012 at 05:00 PM.
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