Go to the parts store yesterday to get an oil filter. Looking through the books I can't recognize any of the AC, Fram or Purolator numbers. I pull the filter they show for my 70 Z28 and it is only about 2 1/2" in height - (the number is 454 or close). The best we can find is a AC 1218 for a late model truck that seems close. What are the correct part numbers for the full size filter for small and big chevys? They are saying the good old PF 25 and 35 are goners.

what happend to PF25 ( small block )?

PF25 = PF454 ( easy to remember) PF35 = PF 1218 .

The Chinese, who make everything now, including oil filters, demanded that the part numbering system be changed. So it was changed. I'd recommend you start liking it. Seriously, you better start liking it. We wouldn't want anything "unfortunate" to happen to you. ;)

only filter i need to remember the part # is HP4 ...fram racing oil filter

K&n 3002

The one I just recently used is a PF454, formerly PF25. It is quite short, but it sure makes getting the filter past the headers easy. :)

If they don't have the long truck filter then get it at GM. GM's PF #'s have changed too. Thanks GM for making it in the USA and Canada. NOT!!!
And you wonder why people are out of jobs here.

This is the one I use, "appears" to be made in USA.
http://www.wixfilters.com/filterlookup/PartDetail.asp?Part=51061R

Regular filters, 69 is the short one, 61 is the longer one.
http://www.wixfilters.com/filterlookup/PartDetail.asp?Part=51061
http://www.wixfilters.com/filterlookup/PartDetail.asp?Part=51069

Filter lookup online.
http://www.wixfilters.com/filterlookup/index.asp





http://i232.photobucket.com/albums/ee95/dmystix/WIXOilFilter002.jpg


http://i232.photobucket.com/albums/ee95/dmystix/WIXOilFilter001.jpg

I tried to order some new Amsoil filters the other day and the dealer told me the number I had been using was not in the order book. Been using that one for years (EAO76) and he says he can't ever remember that number being used. I know all their filters are made in the Us, wonder why the part number is not there any more. Still waiting to hear from their support people.

NAPA Gold (Made by WIX)....
Running synthetic oil.... I have to look the number up every year.

(Longer oil change intervals and shorter memory. :confused: )

Last year I went to Advanced an looked at the filters. They had PF25 on clearence for 25 cents. I bought all 7. Im good for a while :D

The PF1218 isn't a good choice to replace the PF35 on our old cars. They are the same size filter, but the PF1218 has an antidrainback valve that serves no purpose on an old Chevy small block except to restrict oil flow. If you can't get the PF35 from GM, look to a different manufacturer who makes two different number replacements. One with the anti drainback valve to replace the PF1218, and a different one without the valve that directly replaces the PF35.

As far as the PF454 being a replacement for the PF25, there seem to be even bigger problems there. Read this thread on the Corvette forum.
The size doesn't appear to be correct, and can lead to failure.
http://www.corvetteactioncenter.com/forums/c3-technical-performance/83998-oil-filters-pf454-vs-pf25-1969-350-ci.html

Again, your best choice today is to forget using AC Delco filters on old engines. Get a filter from a reputable manufacturer like Purolator, Wix, Hastings, or Baldwin. And, make sure it is a DIRECT replacement for the PF25 or PF35, not a one-size-fits-all like GM sells.

I tried to order some new Amsoil filters the other day and the dealer told me the number I had been using was not in the order book. Been using that one for years (EAO76) and he says he can't ever remember that number being used. I know all their filters are made in the Us, wonder why the part number is not there any more. Still waiting to hear from their support people.

I just checked Amsoil's site and the cross they came up with for the PF35 is EAO27. Also, they show the cross for a PF25 is EAO25.
I just got their magazine in the mail yesterday, and it has an article about their filters. They have redesigned them for increased capacity and filtering. Maybe that has also made for some numbering confusion.

they are changing the filters making them smaller and more compact for the same application so our 5 qt engines are actually 4.8 qt

they are changing the filters making them smaller and more compact for the same application so our 5 qt engines are actually 4.8 qt Great. Now I gotta find a 4.5424941383 ltr jug of oil for my next oil change :rolleyes:.
Walmart should have that.

I just checked Amsoil's site and the cross they came up with for the PF35 is EAO27. Also, they show the cross for a PF25 is EAO25.
I just got their magazine in the mail yesterday, and it has an article about their filters. They have redesigned them for increased capacity and filtering. Maybe that has also made for some numbering confusion.

Gary, the EAO76 is a filter that is used with GM commercial trucks. It is a 2 quart filter and crosses to the AC PF932. I use it since it allows me to get an extra quart of oil into the system and it doubles the effective filter media. Good for use with synthetic oils and their extended drain intervals.

WTF, I dumped my oil before supper and looked at the new AC1218 filter and I'm taking it back. I used to buy the AC1218CL which looked a bit like the old PF35 truck filters. The new AC1218 is also shorter and the gasket thickness is thinner, the diameter of the rubber is slightly smaller and the weight of the filter is really light. I can actually see the paper filter inside. The old ones at lease had a mesh screen of some kind protecting the filter so it doesn't collapse. But I do see a plastic case inside. If I knew GM would make this change then I would have stock piled the PF35's. I'll be sending the pics to the Manager too cause I don't think he'll be in on Sat. I emailed the Manager about the filters now not having the correct specs for a SB Chevy and mentioned that someone needs to contact GM Engineering about the specs of these filters being made offshore.

So what can I buy in Canada that's the same size as the AC PF35 long truck filter?

Look at the photos

http://www.nastyz28.com/~copo/oilfilter1.JPG

http://www.nastyz28.com/~copo/oilfilter2.JPG

Wow. Looks like they really cheapened it. Hard to trust its performance when it looks so cheap.
What about KN oil filters? I use them and like that they have a 1" nut for easy installation and removal.

For spin-on applications I like the Wix filters.I use them on my drivers and as of last week when buying them------still built right.

I use Wix on all our vehicles. We use them at work on all the trucks and tractors too.

The PF1218 isn't a good choice to replace the PF35 on our old cars. They are the same size filter, but the PF1218 has an antidrainback valve that serves no purpose on an old Chevy small block except to restrict oil flow.
Does the ADBV really restrict oil flow enough for it to matter? I'm not trying to debate your knowledge, I'm just curious. I realize anyone with a high-winding engine where the oiling system is extremely critical wouldn't want 'any' restrictions whatsoever. But on a < 400 HP SBC street engine that would rarely see over 6K RPMs, is having the ADBV that big of an issue?

Whenever GM specified use for the ADBV in their V8 truck filters back in the early 90's, I ran them on my car since they were the easiest to acquire (for me). I never had any issues from using them.

BTW, nothing but Wix or Purolator for me. AC filters ain't what they used to be either....not even the ones you buy from the parts desk at the dealership.

If you like Donaldson, their P550035 replaces the PF35. It's a full flow, 13/16-16 thread, 3.81" outer diameter, 5.12" length, 50% efficiency @ 20 micron, 3.38" outer diameter of gasket, 3.04" inner diameter of gasket.

Does the ADBV really restrict oil flow enough for it to matter? I'm not trying to debate your knowledge, I'm just curious..
Most likely no, but I don't want anything restricting my oil flow. At higher oil pressures, the oil should still flow freely past it, but the antidrainback valve serves no useful purpose in our engines, so I don't want it.
I can buy Hastings filters without the valve, and they are still the same size as the old PF35. For me, it makes sense to use the correct filter for an engine.

Cross Reference http://www.aloha34.com/information/oilfiltertable.pdf

I use Wix on all our vehicles. We use them at work on all the trucks and tractors too.

Where in Ontario Canada can I get a Wix.

I just bought a AC PF35C on ebay.ca

I think I'll get a NAPA Gold while I wait for the PF35C in the mail.
No ADB on the 1061
http://img402.imageshack.us/img402/7748/img0938xu.jpg

Look at the last 2 on the right. Cheap looking! I'll see if GM still has any 2232.
http://img691.imageshack.us/img691/449/img0944g.jpg

I just called our local NAPA and they stock the 1061 filter. I'll try it out. All my life I've been using AC. Too bad for GM to take their filter making journey to China for a measly $7. filter. Wow, how cheap can you get. You know where cheap gets you GM, it gets your loyal customers to go spend their $ elsewhere to someone who still makes the correct oil filter. I still find it hard to believe that GM would stoop this low on quality and fit. I read about the Corvette guy that changed his oil filter to a PF1218 and as soon as he fired up the car, all his oil was on the garage floor due to the sealing problem with the smaller thinner rubber gasket. Way da go GM!! You get rid of the good ol PF25 and PF35 filter engineering specs to produce crap. You lost my business.

Edit: Ended up buying 3 NAPA Gold 1061 filters, 7% off with my CAA card.

I run k&n 3002. 2qt capacity. Never had a problem, but they aren't cheap.

Or ya'll could just buy Baldwin Filters.

B6 is the medium one it's 5 11/32" long and B7 is the long one it's 8 11/16" long. B27 is the really short one at 4 3/8" long.

Made in USA.

I run k&n 3002. 2qt capacity. Never had a problem, but they aren't cheap.

Considering the money and significant time and effort we put in our cars, we shouldn't be cutting corners on oil filters.

A bit off topic, but be glad to don't have a Ferrari:
(Found on the net)

Most Ferrari owners will agree that maintaining a Ferrari can be one expensive task... A typical oil change on a Ferrari F430 will run you $500, and about $800 for a Ferrari F360 Modena, or $1100 for a Ferrari F355. This typical oil change needs to occur every 5000 miles or once a year, since most owners don’t drive their cars 5000 miles a year. Other typical maintenance items include spark plugs at an average of $3000, belts every 15000 miles at an average of $4000

Dang! I should have become a Ferrari mechanic. Maybe I'll start offering LSx swapping services for them. :)

My AC PF1218 that I'm returning doesn't have the extended threaded mount.

http://i175.photobucket.com/albums/w131/ray_mcavoy/ACDFilterRedesign.jpg

Anyone remember if there is a difference between the AC PF35 and PF35C? Did both have NO ADB valve?

Looks like NAPA Gold for me. I try to buy "Made in USA" every time I can.

Looks like NAPA Gold for me. I try to buy "Made in USA" every time I can.

I bought 3 yesterday. Looks like the old PF35 filter. $7 bucks each.

If you live in the US and want a PF35 http://www.amazon.com/ACDelco-PF35-Oil-Filter/dp/B001W0PWGO

I bought 3 yesterday. Looks like the old PF35 filter. $7 bucks each.

Aftermarket is the way to go today. GM and AC Delco want our older cars off the road so they can sell more new ones, so if they can convince us to use their inferior filters, they win.
I used AC Delco for over 30 years, but dumped them a few years ago when they cheaped out their filters. Now I buy aftermarket filters to get the OLD GM quality that the NEW GM no longer offers us.
I recommend that everybody buy a quality aftermarket filter today.
Purolator
Wix
Hastings
Baldwin
Or, any house brand made by these US manufacturers.

And, for the future, watch your manufacturer. If they make your filters in the US or Canada, keep buying. If they cheap out and get them from China, India, Japan, or any Oriental country, drop them like a hot rock.

^ Totally agree ^ It's GM's loss in sales and IMO, they need all the sales that they can get and this isn't the way to do it if I was the head Chief of GM Parts. I found out today that they still stock the 1218CL filter. So the guy sold me the wrong one last week. That's ok cause I didn't want the anti drain back valve. I also bought a PF35C on ebay, so it's coming in a couple of days. I asked the Parts Mgr today if he knew what the C stood for and he said he thought it meant Canada. Another person close by has a bunch of cases of PF-25C and PF-35C he's selling. I'm waiting for a cost for 6 since he says would be cheaper than buying 1 for $20 bucks. $20 IMO is too much when I can get a NAPA Gold 1061 for $8.

I bought a PF35C filter off ebay and 3 Napa Gold 1061 oil filters from NAPA.

http://www.nastyz28.com/~copo/images/ac%20pf35%20and%20napa%201061%20oil%20filter%20side.JPG

http://www.nastyz28.com/~copo/images/ac%20pf35%20and%20napa%201061%20oil%20filter%20top.JPG