What is the correct oil fill tube on a 67 350? - Team Camaro Tech
Tech 2002 General Tech questions from 2002
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post #1 of 9 (permalink) Old Aug 6th, 02, 10:20 AM Thread Starter
Tech Team
 
Join Date: Jun 2002
Location: Medford, OR
Posts: 93
Not a mechanical engine question. Not a performance question. Not a decoding question. So, I'm posting it here.

67, coupe, SS 350, PowerGlide, Deluxe interor, factory AC, power brakes, power steering. Engine built in Oct 1966, car assembled 1st week of Nov 1966 (before radius rods, plastic seat covers, generic SS badging, and some other mid-year changes).

My car was purchased with ~34,000 original miles on it. All numbers match. Everything is original inside and out. In the engine compartment, it's all original too. All the compents are stamped correctly (e.g., the alternator). Everything checks out.

However, it has a chrome oil fill tube going into the engine. According to the CRG, all 67 oil fill tubes should be black. I have a hard time believing that the entire car would have been kept stock except for a chrome fill tube. That just doesn't make any sense. Did the original owner decide to chrome out the engine, changed the oil fill tube first, then changed his mind?

I asked CRG for clarification a week or so ago, but never heard back from them.

Does anyone here have any ideas?

------------------
K.A. Young

67 SS 350
PowerGlide AT
AC, Deluxe Interior

Daily Driver
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post #2 of 9 (permalink) Old Aug 6th, 02, 10:32 AM
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Join Date: May 2000
Location: Fremont, Ca, USA
Posts: 118
It should have a black tube with a chrome cap if it is an SS with a 350 motor. It is not uncommon for the filler tubes to get broken by a mechanic or by a broken fan belt. The previous owner may have replaced a damaged one with a shiny new chrome one.

Scott.
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post #3 of 9 (permalink) Old Aug 6th, 02, 10:46 AM
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Mark
 
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Location: Shrewsbury, MA, USA
Posts: 6,509
I could have replied that your question had brought up a fairly major discussion on this, but that no definative answer was available, but that wouldn't have helped you all that much. The quick and dirty answer appears to be a combination of when your car was made and the application of the K24 PCV and K19 AIR system.

Here is a synosis of what has been dug out of the 67 AM. It may or may not make any sense but here goes.

From the parts books and 67 assy manual:
Parts books issued Jan 67 and Dec 71 have the same oil fill tube part numbers for the following 1967 small block applications (so none appear to have been changed through 67 production):

3881858 excludes closed engine positive crankcase ventilation
3889152 with closed engine positive crankcase ventilation (option K24 in
the assy manual -- which is not the same as K19 which is A.I.R., i.e.
"smog")
3889316 for Z28 (from Dec 71 book, no Z28 part numbers in the Jan 67
book), which matches the part number in the assy manual.

Looking at the 67 assy manual it appears that the oil fill tube was
added at the car assembly plant.
I say this because:
- there is a diff procedure for K24 engines (see K24, page A2)
- there is a diff procedure for Z28 (see Z28, page A5)
- UPC 6, page A2 (contents for V8), lists page B2 for oil filler et al.
Unfortunately page B2 is not reproduced in my 1967 assy manual.
- L48, page A2 (non illustrated parts) lists under UPC6 a sublisting
"6G2 OIL FILLER TUBE & CAP - Assemble same as RPO L30" which to me
suggests that these parts are put on at the car assembly plant, but does
not specifically say if there is a diff part number or not.

Also, while not conclusive, the illustrations on the assy manual for non
K24 engines suggest that the 'standard' oil fill tube with no K24
(3881858) does not have any outlets for smog connections.
Small block tube with K24, page A2 has one port to connect a hose to the
carb. What is odd is the part number in the assy manual is 3889311,
which is not listed in the parts books.

As a side note, this RPO page lists two CAP part numbers (one specific
to L48) but only one TUBE number. The different CAP number was added
Feb 23/67. The CAP number that was added is the same CAP number as used
on Z28. I assume, but this is not clear from these documents, that the
Z28 CAP was chrome.

Looking at CAP numbers in the parts book, in Jan 67 a new listing (specifically noted in the book as such) was done for L48 (NO K24). Part # 6419454 which is listed as CHROME.

So then, to recap:
Std V8 or L48, no K24, oil fill tube has no ports for PCV. Finish is
not specified in parts books or assy manual.
Only one part number appears to be specified for oil fill tubes that do
not have any PCV ports.
Std V8 or L48, with K24, oil fill tube has one port for PCV. Finish is
not specified in parts books or assy manual.
Z28 (all) oil fill tube has one port for PCV. Finish is not specified,
but a specific CAP is listed which is assumed to be chrome.
L48, no K24, had a chrome CAP specified in Jan/67.
L48, with K24, has Z28 CAP specified Feb 23/67 - per assy manual.
K24 part number in assy manual (3889311) is not in parts books

Summarizing further:

All Z28's had chrome oil fill caps.
Starting in early 67 all L48's had chrome oil fill caps.

There is no functional difference between a Z28 oil fill tube and a L48/K24 tube (both used the same cap and PCV valve), but there are two diff part numbers which suggest that there may be finish differences.

Only one part number appears to be specified for oil fill tubes that do
not have any PCV ports.

The tube is installed at the car assembly plant, thereby allowing for
variations between LOS and NOR cars.

It appears that Z28's and L48's with AIR should have chrome oil fill tubes, all others have black. There was a change in the Jan/Feb time frame but we are not clear on what it was. We know your car is an 11A car and has the chrome tube, we have some 12A cars with chrome tubes as well.

There may be differences between LA and NOR in the application of this tube. We do not have a sufficient population of notes indicating chrome or black oil fill tube to draw anything more than this at the moment.

Perhaps if more people on this site that have original 67 cars could indicate if they have chrome or black oil fill tubes and if they had AIR and or PCV systems we could research this more.


------------------
Mark Canning
1969 Indy Pace Car
350/300HP RPO Z11
My 69 L48 - 350/300HP Engine
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post #4 of 9 (permalink) Old Aug 6th, 02, 11:58 AM Thread Starter
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Location: Medford, OR
Posts: 93
Thanks for the reply. Very informative.

My car was built at the Van Nuys (LOS) plant and sold in Hollywood to a resident of nearby Gardena, CA. My car does have the A.I.R. system.

I'm going to work under the assumption that the chrome fill tube is stock on my car.

Thanks again.

------------------
K.A. Young

67 SS 350
PowerGlide AT
AC, Deluxe Interior

Daily Driver
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post #5 of 9 (permalink) Old Aug 6th, 02, 05:47 PM
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Call me Funk
 
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For GODSAKE post pictures of your '67, not that damn FORD!

Even though that was fantastic information, Mark has WAY to much time on his hands.

Thanks Mark, great info.

-Funk
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post #6 of 9 (permalink) Old Aug 7th, 02, 04:56 AM Thread Starter
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Posts: 93
I just realized that my car no longer has the AIR system (pump) installed. Daniel from the CRG helped me identify it by providing a picture of his engine. Mine isn't there. The engine code is MV which is correct for AIR (which makes sense, since it was sold into CA).

The car had only ~34,000 original miles when purchased in 1989. It appears that the engine has never been repainted, either. Thus, the argument of "it was removed to paint the engine, and then never replaced" doesn't seem to fit here.

I'll have to do some digging to find out if I can find out what happened to the AIR pump.

I don't have a digital camera and I keep forgetting to take any pictures with my regular camera.

Also, forgot to mention that I put a 4" lift kit, 35" super swampers, and 4.88 gears with a Detroit locker on my camaro. It looks great .. I'll be taking it down to Rubicon later this month.

------------------
K.A. Young

67 SS 350
PowerGlide AT
AC, Deluxe Interior

Daily Driver
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post #7 of 9 (permalink) Old Aug 7th, 02, 07:31 AM
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Mark
 
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Location: Shrewsbury, MA, USA
Posts: 6,509
I can't take credit for typing up most of that as I'm not into the 67's. That was from one of the other members of the CRG.

What kind of effort did everyone think went into a question as simple as that. With limited documentation, and a lot of assumptions on what took place when during assembly of cars 30 years ago it's sometimes a miracle anything can be determined. Sometimes things just come together, other times we come up completely blank. You should have seen the discussion that went on about the W/O codes on LA cars, or the actual process of assembling the body by Fisher and then triming out the rest by GM. Try to figure out a process that starts with some stamped sheetmetal parts one day and ends up with a finished car 3 or 4 days later using old picture, the assembly manual and some actual experience on what is done today.


------------------
Mark Canning
1969 Indy Pace Car
350/300HP RPO Z11
My 69 L48 - 350/300HP Engine
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post #8 of 9 (permalink) Old Aug 14th, 02, 12:10 PM
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Jim
 
Join Date: Apr 2000
Location: York S.C.
Posts: 1,081
Mine is chrome(original). I also have the AIR injection system on mine. If you need parts or help with yours, just ask.

------------------
Jim
67 Camaro SS Conv.
70 Challenger R/T Conv.
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post #9 of 9 (permalink) Old Aug 14th, 02, 03:26 PM
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Join Date: Jan 2002
Location: virginia
Posts: 228
I have to second cfunk I have clicked the daily driver link 20 time's in hope of a glimce of the 67 l48 ,,,,,,,but well you know !! put a pic of the car dude !!!!!


------------------
69 camaro traded for 67 camaro traded back for 69 now back with a 67 rs WILL IT NEVER END ,,,,,,,,,,,,,,
I HOPE NOT .
ADVENTURE'S IN RUST REPAIR
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