• When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

727 Filter Help

66 Sat

Well-Known Member
Local time
11:31 AM
Joined
Apr 26, 2015
Messages
1,863
Reaction score
4,272
Location
Australia
I'm replacing my factory 727 oil pan with an aluminium deeper pan that has a drain plug (and another plug for a temperature gauge if desired). It has a billet filter extension and a neoprene gasket that seems like a much better product than the cork one that was on there - we'll see if it performs as well as it should.

The question I have is the filter I got from the local store is different to the filter that I've removed. The new one has a smaller area and 2 holes instead of 1.
Will it still work or is this an earlier or later model filter?
Transmission is a small block 727, presumably 1966.
Also there was a small amount of metallic "trash" in the pan, probably an inch or so in diameter, it's visible in the north-east corner of the pan in the last photo. Is this a concern? Oil is about 5,000 miles old, car gets driven reasonably hard.
20230924_143744.jpg
20230924_143116.jpg
20230924_142126.jpg
20230924_162915.jpg
20230924_143110.jpg
 
The "dust" in the pan is very common-most likely from the torque converter. I believe there are some paper fragments on the old filter from the clutches. The filter is indeed for 62-65 Torqueflites. You should have the single hole model. The filter extension is puzzling, it has 3 holes? Weight savings? Nice pan by the way.
Mike
 
Wrong filter and wrong extension. Both for an older trans. Kim
Hmmm I'm picking up the right filter later today (they ordered it in yesterday for me), but the extension came with the pan, it's part of the kit from Aeroflow. I hope it's universal and will work ok (i.e. the extra hole just sits there and doesn't hurt anything as it's up against the valvebody).
 
Well I've got the right filter now but the 3 mounting bolts they supply with the filter extension are too short. They've supplied 13/16" long bolts when they need to be 1 3/16".
While I was there I checked the bolts that mount the pan itself. They've supplied 14 no. bolts 2" long but with the thick aluminium rail and the gasket they only protrude by about 4 threads. They need to be 2 3/8" to have the same protrusion as the original bolts through the original pan.
Why do suppliers do this? What a waste. Luckily I have a specialist nut and bolt place nearby so I'll swing by there tomorrow and get everything I need.
I'd imagine full time mechanics, engine builders etc go through this hassle on a daily basis.
The kit is good quality, they've given a spare gasket for the extension piece, the main bolts also have screw heads to help when installing...they just dropped the ball on the bolt lengths.
20230926_172731.jpg
20230926_172736.jpg
20230926_173724.jpg
20230926_182851.jpg
20230926_182940.jpg
 
The pan bolts look good. The pan bolt torque is low enough not to pull threads. The cap screws furnished were probably chosen to accommodate the length needed for the blind transmission holes.
Mike
 
I thought you can use a 2 hole filters on a 1 hole trans without issue?
 
The pan bolts look good. The pan bolt torque is low enough not to pull threads. The cap screws furnished were probably chosen to accommodate the length needed for the blind transmission holes.
Mike
All my measurements were taken in comparison to the projection of the bolts I removed in relation to the original pan/filter.
I think I'll go with the longer bolts because some of the holes are probably a bit flogged out after 50 years, the more thread I can get in there the better.
 
Well I've got the right filter now but the 3 mounting bolts they supply with the filter extension are too short. They've supplied 13/16" long bolts when they need to be 1 3/16".
While I was there I checked the bolts that mount the pan itself. They've supplied 14 no. bolts 2" long but with the thick aluminium rail and the gasket they only protrude by about 4 threads. They need to be 2 3/8" to have the same protrusion as the original bolts through the original pan.
Why do suppliers do this? What a waste. Luckily I have a specialist nut and bolt place nearby so I'll swing by there tomorrow and get everything I need.
I'd imagine full time mechanics, engine builders etc go through this hassle on a daily basis.
The kit is good quality, they've given a spare gasket for the extension piece, the main bolts also have screw heads to help when installing...they just dropped the ball on the bolt lengths.
View attachment 1530513View attachment 1530514View attachment 1530515View attachment 1530516View attachment 1530517
It's not a spare gasket, 1 goes on each side of the extension.
 
It's not a spare gasket, 1 goes on each side of the extension.
Why would you put a gasket between the extension piece and the filter? There's no gasket between the filter and the valvebody if you aren't using an extension is there?
The filter is soft like a gasket, surely gaskets are used when marrying 2 hard surfaces together?
 
20230926_150218.jpg

Trans go.
Mind you they are referring to the good mesh ones they furnish.
Stock filters.. maybe no problem? But that's why they pack 2.
 
Well the job is done, looks good, no leaks (so far). Takes an extra 2 1/2 quarts which should help with cooling.
I ended up using 11 of the supplied bolts, the other 3 wouldn't pinch up so I needed the longer ones (which don't match unfortunately).
I tightened the 9 using a screwdriver only and was very light on the other 3 with the socket. I had to gently re-torque them all a few times as the gasket compressed a small amount, but it's quite firm and doesn't deform much.
I've taken the car out for a drive so now the nervous time watching for puddles underneath...
20230927_142159.jpg
20230927_142344.jpg
 
Last edited:
Well the job is done, looks good, no leaks (so far). Takes an extra 2 1/2 quarts which should help with cooling.
I ended up using 11 of the supplied bolts, the other 3 wouldn't pinch up so I needed the longer ones (which don't match unfortunately).
I tightened the 9 using a screwdriver only and was very light on the other 3 with the socket. I had to re-torque them all a few times as the gasket compressed.
I've taken the car out for a drive so now the nervous time watching for puddles underneath...
View attachment 1531064View attachment 1531065
That's a really nice looking pan extension. I am going to look into that myself now. I see it is already fitted for a gauge sender unit. :thumbsup:
 
It's an Aeroflow AF72-3004.
2.33" deep fabricated aluminium pan.
It's a good depth, doesn't hang really low but still has some extra capacity.
The gasket is sold separately - Aeroflow AF72-3554. It's reusable which is handy.
 
Last edited:
The second hole is for the pre-1966 transmissions with the rear oil pump.
I think the filter / extension is setup to work on any year transmission ?
 
It's an Aeroflow AF72-3004.
2.33" deep fabricated aluminium pan.
It's a good depth, doesn't hang really low but still has some extra capacity.
The gasket is sold separately - Aeroflow AF72-3554. It's reusable which is handy.
Thanks...post bookmarked. :thumbsup:
 
It's an Aeroflow AF72-3004.
2.33" deep fabricated aluminium pan.
It's a good depth, doesn't hang really low but still has some extra capacity.
The gasket is sold separately - Aeroflow AF72-3554. It's reusable which is handy.
I have just ordered mine from the local dealer.....should be here by Saturday from Australia. The local mob sells mostly Chebby stuff.

Indent order. :rolleyes:
 
Auto Transport Service
Back
Top