Is there supposed to be a bolt spacer for the 400 TH fluid filter - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**71CHEVYSHORTBED402** · 01-23-2023, 02:51 PM

1971 400TH, I found my filter without one.

Boy, long ago I asked this question and don't remember the answer. I can't even find the thread.

I recall a spacer isn't used for this application or unnecessary, which might explain why I didn't mention one in my assembly guide.

Anyway, with or without a spacer?

Also, is this considered a deep pan?

Other

should the pick up tube install into the transmission's intake hole with one or two O-rings?

Appreciate it, thank you.

**Getter-Done** · 01-23-2023, 02:59 PM

It’s been a long long time since I’ve fooled with those.
I do remember (the filter) it is floating.
Now whether it has anything else besides that bolt ?
I don’t remember.
Sorry I can’t help anymore than that

**kwmech** · 01-23-2023, 06:15 PM

Depends on the depth of the pan. With the bolt you are showing, the pan is only about 1-1/4'' deep. The longer bolt and spacer takes a pan about 2.5'' deep. The deeper pan also takes a different intake plastic with an O ring on each side IIRC

cadillac_al · 01-23-2023, 07:26 PM

no there is no washer for that bolt. The filter is a loose fit and just floats around on that bolt.

**71CHEVYSHORTBED402** · 01-23-2023, 07:32 PM

Quote:

Originally Posted by kwmech

Depends on the depth of the pan. With the bolt you are showing, the pan is only about 1-1/4'' deep. The longer bolt and spacer takes a pan about 2.5'' deep. The deeper pan also takes a different intake plastic with an O ring on each side IIRC

Seems the tube at the filter skips the O-ring where the filter has a rubber grommet instead. Apparently 400 TH were installed with different filters, depending on year.

Quote:

Originally Posted by cadillac_al

no there is no washer for that bolt. The filter is a loose fit and just floats around on that bolt.

If I read you guys right the filter doesn't use a spacer installed by the bolt for a shallow pan. This video is consistent, he's only installing a spacer for a deeper pan. Here's a picture of mine, which strikes me as the shallow pan. Thank you.

https://www.youtube.com/watch?v=S8OSBb9TB80&t=20s

01-23-2023, 02:51 PM	#1
71CHEVYSHORTBED402 Senior Member Join Date: Feb 2009 Location: Northern Nevada Posts: 7,118	Is there supposed to be a bolt spacer for the 400 TH fluid filter 1971 400TH, I found my filter without one. Boy, long ago I asked this question and don't remember the answer. I can't even find the thread. I recall a spacer isn't used for this application or unnecessary, which might explain why I didn't mention one in my assembly guide. Anyway, with or without a spacer? Also, is this considered a deep pan? Other should the pick up tube install into the transmission's intake hole with one or two O-rings? Appreciate it, thank you. Attached Images __________________ Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assm. guide "kit" for restoring it from ground up. With assys, the guide accts for 1000s of OEM identifications and part numbers, all written in short order. 700+ images include assm, illust., charts, and points of interest. Much of the info. applies to all 67-72 GM trucks, and to a lessor degree all 67-72 GM vehicles. My build thread, and more on the guide https://67-72chevytrucks.com/vboard/...d.php?t=730025 Last edited by 71CHEVYSHORTBED402; 01-23-2023 at 04:01 PM.

01-23-2023, 02:59 PM	#2
Getter-Done Senior Member Join Date: Dec 2009 Location: TN. Posts: 7,719	Re: Is there supposed to be a bolt spacer for the 400 TH fluid filter It’s been a long long time since I’ve fooled with those. I do remember (the filter) it is floating. Now whether it has anything else besides that bolt ? I don’t remember. Sorry I can’t help anymore than that __________________ ________________________________________________________________________________________ ____________________________________________ 84 Chevy K-20 63 Impala (my high school car) http://67-72chevytrucks.com/vboard/s...Crew Cab Build

01-23-2023, 06:15 PM	#3
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,389	Re: Is there supposed to be a bolt spacer for the 400 TH fluid filter Depends on the depth of the pan. With the bolt you are showing, the pan is only about 1-1/4'' deep. The longer bolt and spacer takes a pan about 2.5'' deep. The deeper pan also takes a different intake plastic with an O ring on each side IIRC

01-23-2023, 07:26 PM	#4
cadillac_al Registered User Join Date: Oct 2013 Location: Maine Posts: 2,334	Re: Is there supposed to be a bolt spacer for the 400 TH fluid filter no there is no washer for that bolt. The filter is a loose fit and just floats around on that bolt. __________________ 76 Chevy K20 76 GMC K15 77 Chevy C10 77 Chevy K10



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