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#1
03-05-2007, 08:42 PM
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question on 6x heads
6x-4 head on the driver side between the #1 spark plugs,beneath the n/d casting mark there is a threaded? plug in the head with what looks like a vacuum fitting on it . what is this,there seems to be no vac at the fitting! should it be taken out of the head and blocked off,or anything. what is the purpose of it?(drivers side head) thanks If I am not worrying about something,i will find somethin-LOL
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#2
03-05-2007, 08:51 PM
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I'd bet you are looking at the provision to mount a water temp sensor in the head. I don't know why it would have a vacuum fitting on the plug, sounds like someone put that in because it fit. I would just plug the hole and forget about it.
__________________
65 Catalina sedan. Allen Thomas Performance 495. KRE Heads at 310cfm ported by SD Performance, ProSystems Dominator carb on ported Victor intake, P-Dude custom grind hydraulic roller, MSD ignition, 3.50 Moser/Ford rear. F-Glass front bumper by son Rob, rear by the old man and joint effort for trunk lid. 3950# w/driver. Best of 9.5761/139 on 175 shot, 6.01 /114 in 1/8. |
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#3
03-05-2007, 09:20 PM
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It`s an old EGR thermo-vacumn switch or TVS. It kept the EGR from operating till the water temp. got to the specified temp. It`s not gonna hurt anything unless you think it`s ugly. Then i`d use a pipe plug.
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#4
03-05-2007, 09:39 PM
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Another 6x head question. I have a 72 455 with 6x heads, how can I tell what year these heads are? My car is a 73 formula. Thanks.
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Yellow73 |
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#5
03-05-2007, 10:58 PM
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thanks for replys,yep,just kinda sticks out there,not really ugly like me! should be numbers on the heads to id what year
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#6
03-06-2007, 12:11 AM
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Quote:
__________________
1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/3.08 2002 WS6 Convertible LS1/4L60E/3.23 1966 VW Type 2 Single Cab Pickup 140hp 2276 1956 VW Type 2 Panel Van 36hp 1200 1957 VW Type 1 Beetle 180hp 2276 |
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#7
03-06-2007, 01:11 AM
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did somebody say hijack?
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Tim Corcoran |
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#8
03-06-2007, 02:14 AM
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.... Seeing as how somebody said "Hi, Jack!", I might as well respond with a dumb question-
In the example above, how do I know that's not January 22nd 1966? |
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#9
03-06-2007, 01:24 PM
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Quote:
 All it takes is $20 spent on Pete McCarthy's book to know pretty much all about Pontiac head ID. Oh, Hi Jack! 
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1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/3.08 2002 WS6 Convertible LS1/4L60E/3.23 1966 VW Type 2 Single Cab Pickup 140hp 2276 1956 VW Type 2 Panel Van 36hp 1200 1957 VW Type 1 Beetle 180hp 2276 |
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#10
03-07-2007, 02:08 AM
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Quote:
But what about the substance of my question- are some Pontiac date codes redundant between decades? |
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#11
03-07-2007, 10:54 AM
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Quote:
__________________
North Dakotas fastest REAL GTO 10.10 @ 131 MPH in the 1/4 Hoping to get it back together some year. www.jandjrepairandrestoration |
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#12
03-08-2007, 01:55 AM
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Thank you.
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