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05-24-2017, 04:50 PM
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#1 |
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Registered User
Join Date: May 2017
Location: Gainesville GA
Posts: 6
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Can anyone tell me what this thing is?
I'm currently starting a 250 rebuild maybe boost ��but for the life of me
I can't tell what this is. I'm prepared for the shaming. Screw like object below valve spring. Last edited by Caffeinephreak; 05-24-2017 at 06:22 PM. Reason: Didnt clarify what I was asking for |
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05-24-2017, 04:52 PM
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#2 |
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Senior Member
 
Join Date: Jun 2005
Location: Winona Lake, IN
Posts: 6,538
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Re: Can anyone tell me what this thing is?
Looks like a cylinder head to me. What specifically are you referring to?
__________________
70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Sliding Rear Window Power Windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear |
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05-24-2017, 04:56 PM
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#3 |
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Registered User
Join Date: May 2017
Location: Gainesville GA
Posts: 6
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Re: Can anyone tell me what this thing is?
Ah my bad
The screw like object below the valve springs center of picture |
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05-24-2017, 06:23 PM
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#4 |
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Registered User
Join Date: Apr 2011
Location: Klein Texas
Posts: 3,852
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Re: Can anyone tell me what this thing is?
Oldsmobile?
AIR injection ports for secondary air.
__________________
My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe |
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05-24-2017, 06:23 PM
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#5 |
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Registered User
Join Date: May 2017
Location: Gainesville GA
Posts: 6
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Re: Can anyone tell me what this thing is?
I updated the photo if that helps
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05-24-2017, 06:24 PM
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#6 | |
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Registered User
Join Date: May 2017
Location: Gainesville GA
Posts: 6
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Re: Can anyone tell me what this thing is?
Quote:
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05-24-2017, 07:20 PM
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#7 | ||
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Registered User
Join Date: May 2017
Location: Gainesville GA
Posts: 6
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Re: Can anyone tell me what this thing is?
Quote:
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05-24-2017, 07:40 PM
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#8 |
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Who Changed This?
Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,937
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Re: Can anyone tell me what this thing is?
Looks like Bigdav160 got it. If there is one plug at each exhaust port, they are in the position where the Air Injection Reactor pumped air into the exhaust to help with more complete burning of the exhaust when the choke was engaged. Once the truck warms up enough, the thermal vacuum switch opens and the system freewheels.
That system began to be used in '66 on many vehicles.
__________________
~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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05-24-2017, 08:45 PM
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#9 | |
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Registered User
Join Date: May 2017
Location: Gainesville GA
Posts: 6
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Re: Can anyone tell me what this thing is?
Quote:
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