C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

LT1 oil filter

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Old Sep 22, 2009 | 12:28 PM
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Default LT1 oil filter

Why did GM start putting smaller oil filters on?

I had to remove the adapter to get to the rear pan bolts when removing my oil pan. Looks like a larger filter could be used. Does running a smaller filter help with oil pressure or somthing?
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Old Sep 22, 2009 | 06:53 PM
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They did that with my truck also, I got a larger one by going to advanced auto and the guy had a book and told me the number of a larger one that would fit my truck.
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Old Sep 23, 2009 | 03:51 AM
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It was just a thought. I'll just put the small one back on.

Thanks for your comment.
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Old Sep 23, 2009 | 07:47 AM
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I installe a remote filter adapter, used Earl's fittings and hoses and mounted my filter in the cavity in front of the front left wheel. I used a large oil filter, and also get the filter away from the hot exhaust pipe that it was located next to. More oil and cooler oil, and it is easier to change as well!
Bernie
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Old Sep 23, 2009 | 08:29 AM
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They did that to clear the catalytic converter. If you have or run full length headers, you can switch to a conventional sized filter if you so desire.
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Old Sep 23, 2009 | 11:12 PM
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Agree with above. I use LT headers and went to the larger filter. Simple mod, if the headers are on.
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Old Sep 23, 2009 | 11:20 PM
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Originally Posted by 96GS#007
They did that to clear the catalytic converter. If you have or run full length headers, you can switch to a conventional sized filter if you so desire.
correct answer
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Old Sep 24, 2009 | 03:20 AM
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Originally Posted by steve40th
Agree with above. I use LT headers and went to the larger filter. Simple mod, if the headers are on.
Good deal! Thanks!
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Old Sep 27, 2009 | 04:25 PM
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I tried to see if there was a way for me to do this on my vette today. I can't unless there is some kind of adapter to use. There is no place to install the threaded couplin the filter screws into. It's smooth in the center hole, no threads at all.
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Old Sep 27, 2009 | 05:07 PM
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Originally Posted by Weav's Vet
I tried to see if there was a way for me to do this on my vette today. I can't unless there is some kind of adapter to use. There is no place to install the threaded couplin the filter screws into. It's smooth in the center hole, no threads at all.
The factory used an aluminum adapter since 1968, small and big block.
Here it is.
http://www.summitracing.com/parts/SES-3-60-08-900/
Very common, Dealers, junk yards etc etc have these.

Last edited by steve40th; Sep 27, 2009 at 05:09 PM.
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Old Sep 27, 2009 | 05:15 PM
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Thanks Steve. Maybe I'll switch it out another time. It's all back with the one that was on it now.
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