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Old 01-11-2007, 05:31 PM
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350 Chevy Oil Filter Adpater question

I am rebuilding my 350 sbc engine, and when I took the block to the machine shop, I thought I remembered a seal or gasket around the outside edge of where the oil filter adapter bolts on. I called the machine shop about it, but he said that a 2 piece rear main block does not have a gasket for the oil filter adapter, it bolts metal to metal. I also went to the local chevy dealer, (lost cause) and they could not find a gasket or seal for it either. Can anyone confirm if the machine shop is right?

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Old 01-11-2007, 06:45 PM
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Quote:
Originally Posted by plthomp
I am rebuilding my 350 sbc engine, and when I took the block to the machine shop, I thought I remembered a seal or gasket around the outside edge of where the oil filter adapter bolts on. I called the machine shop about it, but he said that a 2 piece rear main block does not have a gasket for the oil filter adapter, it bolts metal to metal. I also went to the local chevy dealer, (lost cause) and they could not find a gasket or seal for it either. Can anyone confirm if the machine shop is right?
The shop is right. I have a 327 SBC with the same adapter. The seal is the neoprene ring that goes around the inside if the lip when you change the oil filter.
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Old 01-11-2007, 07:31 PM
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A factory adapter doesn't use a gasket. Some aftermarket oil filter adapters use a rubber seal around the outside of the adapter base where it contacts the block. It's about the same diameter as a spin-on filter for a SBC. Here's a pic of the TransDapt version from Summit's site:
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Old 01-11-2007, 09:25 PM
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I was thinking that the block had a gasket around the outside edge. Since this is the original adapter and flange, do I need the see about finding the gasket, or just go without it?
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Old 01-12-2007, 05:10 PM
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It sounds like you want to have a gasket where none is needed. Ok, use a neoprene O ring from an oil filter. That will fit it perfectly.
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Old 01-13-2007, 09:27 AM
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the stock 283-327 filter base uses a rubber oring around the out side of it. That oring comes with a new filter. Go buy the canister type filter and there should be a new oring in the box. That oring seals the can against the block.

http://www.partsamerica.com/ProductD...type=1&ptset=A

I can't figure out how to post a picture here is a link to a picture of what you need.
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Old 01-14-2007, 05:37 PM
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Thank everyone very much for the information. I will go and purchase the canister filter tomorrow.

This is a great site!!!!
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Old 01-15-2007, 11:19 AM
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350 Chevy oil filter adapter

I just put a 350 crate in my '41. No gasket needed on adaptor. Used OEM adapter. Seal is provided by Oil Filter.
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