Author Topic: 65 GS Oil Dipstick Correct Number  (Read 3051 times)

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Offline mdkd

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65 GS Oil Dipstick Correct Number
« on: March 18, 2012, 08:49:30 PM »
All

I have seen threads here on extending the standard dipstick to the correct length for a 65 GS 401 but what is the correct number and is it printed on the dipstick like the standard center sump? My current dipstick has number 1356562 stamped on it.

Thanks

mdkd
65 White GS HT My Pride & Joy
31 in Registry 2022 BCA Gold
65 Red White GS Convert 99 in Registry
SOLD to a good home in Ohio
65 Black GS HT - SOLD to a good home local
Several 64-65 non GS HT & Convert Sold
64 Special 4dr parents bought new not 4 sale

Offline nut465gs

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Re: 65 GS Oil Dipstick Correct Number
« Reply #1 on: March 19, 2012, 08:55:52 AM »
Here's a Service Bulletin regarding the dipstick. The dipstick in my silver convertible is #1372785. It is about 1 inch longer than the #1356562 dipstick because the Skylark GS has a rear oil sump. I am skeptical of the accuracy of either dipstick readings. After I change the oil and filter, run the engine for a short while, then I look at the level indicated on the dipstick. I then put a shallow scratch mark on the back side of the stick as the correct full level, just to be sure.

BTW, the 400 engine in the Service Bulletin is the 401 engine in the Skylark GS.

John
« Last Edit: March 19, 2012, 08:58:28 AM by nut465gs »

Offline mdkd

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Re: 65 GS Oil Dipstick Correct Number
« Reply #2 on: March 19, 2012, 09:40:32 AM »
John

Thanks as always.

I'm sure this may help others as well.

I was using the scratch method you suggested until I could get the right dipstick.

I was also using the longer PF7 Oil Filter instead of the PF24 which I thought might be confusing the issue.

By the way, is the PF7 or PF24 or ??? the correct Oil Filter.

Thanks again

mdkd
65 White GS HT My Pride & Joy
31 in Registry 2022 BCA Gold
65 Red White GS Convert 99 in Registry
SOLD to a good home in Ohio
65 Black GS HT - SOLD to a good home local
Several 64-65 non GS HT & Convert Sold
64 Special 4dr parents bought new not 4 sale

Offline Brian

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Re: 65 GS Oil Dipstick Correct Number
« Reply #3 on: March 19, 2012, 12:52:51 PM »
PF10 is the correct filter for the engine, but they haven't made them in years.  Buick came out with the shorter PF24 in 67 when they introduced the 400/430 engine family.  The PF10 was too long on the bigger engines and interfered with something on the chasis on the big cars.  So the PF10 was phased out and the PF24 became the correct filter for everything.  I haven't seen a PF7 available anywhere--where did you find that?  I know my '64 Skylark calls for that on it's 300 engine, but I have never seen one before and am not sure what the difference between it and the PF10/PF24 is.   
  In Summary, PF24 is correct, currently available filter for all Buick V8 engines that use a disposable filter assembly.
'64 Skylark 2dr ht 4 speed, 300-4
'65 GS ht, 4 speed,2-4s,AC,PS,PB,PW,Pseat,Tilt
'66 Skylark 2dr ht 300-2 automatic
'78 Yamaha DT 400 2 stroke
'88 Ford F-150 4x4 (used to be 4x2)
'89 Ford F-350 4x4
'03 Honda Accord Coupe V6 6-speed manual (daily driver)

Offline mdkd

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Re: 65 GS Oil Dipstick Correct Number
« Reply #4 on: March 19, 2012, 04:55:32 PM »
Brian

Thanks for the update

The 1964 Special, Special Deluxe, Skylark Owners Guide page 56 Second Addition under Engine Oil Filter Change Recommendation lists the AC type PF-7 as the correct Oil Filter.

I know this was the 300 engine but I thought I would give it a shot.

When I went into my local NAPA store I asked for an AC PF7 for a 65 Gran Sport 401. He handed me a long filter that has been working but it isn't AC. I should have been paying a lot more attention but I believe the number was NAPA Gold 1049. I have several AC PF-24 but I was saving them until I knew what was really correct. The NAPA guy was probably just feeling sorry for the OLD guy with the GS (ME) and didn't bother to correct me on the changes.

The long filter runs close to the steel lines but it gives you more capacity and a little easier to get at with a filter wrench.

My parents bought a brand new Special in 1964 which I still have. It hasn't run since the late 70's but is still running a "Holiday PH-5" Oil Filter.

As long as we are talking about consumables what is the correct Fuel and Air Filter? I have an Air Conditioned 65 GS Convertable with single Carter carb and pancake air filter. The Air Conditioning was partially disconnected when I bought it. I also have a 2x4 setup in the basement that may find its way into position on the car.

As always Thanks for the Help

mdkd 
65 White GS HT My Pride & Joy
31 in Registry 2022 BCA Gold
65 Red White GS Convert 99 in Registry
SOLD to a good home in Ohio
65 Black GS HT - SOLD to a good home local
Several 64-65 non GS HT & Convert Sold
64 Special 4dr parents bought new not 4 sale

Offline Brian

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Re: 65 GS Oil Dipstick Correct Number
« Reply #5 on: March 19, 2012, 09:04:09 PM »
I don't know the fuel filter part numbers off the top of my head, but they are specific to the AC and non-AC cars.  They are hard to find, because the only thing being made now are the style with the crimp in the middle that won't fit properly in the factory bracket. 
  Single 4bbl. 65 GS takes  A85C air flter.  Dual 4bbl takes A989C air filter.  I don't think you can get the dual 4bbl. filter new anymore, but you can buy the single 4bbl air filter. 
   Apparantly the PF7 filter was also used on some other GM cars because I saw and original one for sale at a swap meet for $50 once.  I started to by it for my '64, but decided against it.  The PF24 works fine on my 64 as well as my 65 and 66. 
'64 Skylark 2dr ht 4 speed, 300-4
'65 GS ht, 4 speed,2-4s,AC,PS,PB,PW,Pseat,Tilt
'66 Skylark 2dr ht 300-2 automatic
'78 Yamaha DT 400 2 stroke
'88 Ford F-150 4x4 (used to be 4x2)
'89 Ford F-350 4x4
'03 Honda Accord Coupe V6 6-speed manual (daily driver)

Offline nut465gs

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Re: 65 GS Oil Dipstick Correct Number
« Reply #6 on: March 20, 2012, 10:05:06 AM »
The Skylark GS Supplement Service Manual lists the fuel filters as AC brand GF-94 for non Air Conditioned cars and AC brand GF-96 for cars with air conditioning. GF-96 filters occasionally show up on EBay but are a bit pricey. I have rarely seen a GF-94 on EBay.

However, GF-61 does show up quite often and are listed as for all cars having a 5/16" rubber hose fuel line. See photo attached. Note that the filter at the top is what you get when you order a GF-94 from a dealership. It does not fit into bracket and is not NOS.

Also, GF-423 shows up often and are listed for Buicks 1963-66 with air conditioning. The hose nipples are 5/16" This is what I have been using on my Air Conditioned GSs. Curiously, they come in either silver painted, red painted or that gold anodized finish. See photo attached.

I have also seen a GF-421 on EBay as listed for Oldsmobile with 3x2 carbs with air. Another number that shows up is GF-415. These also are for a 5/16" inlet and outlet hose lines. Can anyone tell me why these filters would not also work for a GS Nailhead? They are listed for big block cars from the 60s. They seem to work fine on my GSs, as far as I know. BTW, when they are installed into the correct bracket, you can not see the actual part number on the filter. Use AC fuel Filters as your search on EBay and see what comes up. Most sell for $25 to $45 plus shipping. Some are listed for much more $$$$.
« Last Edit: March 20, 2012, 10:29:48 AM by nut465gs »

Offline jmos4

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Re: 65 GS Oil Dipstick Correct Number
« Reply #7 on: March 20, 2012, 11:04:18 AM »

Hi,

here is what I found in a few nailheads and what pan was on them not positive these are 100% but all the rear sumps are real close in lenghts

year   style pan   engine size   pn
66   center   425   1356562
64   center   401   1372785
57   rear   364   1185852
59   rear   401   1190442
66   rear   401   1356562
66   center   425   1356502


Someone was mentioning the tall Napa filter, one word of caution is it does not have a diaphragm in it to keep oil in the filter may not be a big deal on nailhead, but on the 300/340 you may be better off with a short filter as they do have the diaphragm other wise you get a moment of no psi at start up, I ran one once on my 65 special and noticed it in the cold months

Regards,
Jim

1965 Skylark post car (65 GS frame 401/4-speed, 2x4's)
1964 Skylark (future 430 stick)
1965 Special 4 door 300 4speed
1964 Special 2 door (future, GS 401 3 speed stick)