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Old 05-16-2016, 09:02 PM   #1
chazdo2
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1971 Chevy oil pan help

My oil pan gasket needs replacing. I cannot get the pan out. Do I need to raise the engine or loosen the tranny to separate? At a loss the cross member isn't low enough and the rear of the pan hits the flywheel.
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Old 05-16-2016, 09:31 PM   #2
jimmq
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Re: 1971 Chevy oil pan help

well if you have a 4wd the engine needs to come out.. Word of advise, if you are using the one piece gasket, check with felpro and get the correct PN for your pan. There are 2 gasket thicknesses for around the timing cover.. Lessen learned
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Old 05-17-2016, 06:41 AM   #3
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Re: 1971 Chevy oil pan help

thank you very much!!!!!
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Old 05-17-2016, 08:36 AM   #4
Andy4639
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Lightbulb Re: 1971 Chevy oil pan help

You have to jack the motor up enough to clear it. If it's a real 71 pan then the timing cover will need to be taken off to get the lip of the pan out from behind it.
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Old 05-17-2016, 06:27 PM   #5
chazdo2
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Re: 1971 Chevy oil pan help

no its a 1990 something 350 at least the starter from my 1994 350 fit directly in it. How do I find out what year my motor is?
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Old 05-17-2016, 06:38 PM   #6
GASoline71
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Re: 1971 Chevy oil pan help

By the suffix code located on the machined surface in front of the passenger side cylinder head. There will be a series of alpha-numerics stamped on that machined pad. Post them up.

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Remember Murphys 2nd law of mechanical relationships... "OPPOSING COMPONENTS ATTEMPTING TO OCCUPY THE SAME SPACE, AT THE SAME TIME, GENERALLY END UP OCCUPYING ADJOINING SPACE AT THE BOTTOM OF THE OIL PAN"
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Old 05-17-2016, 07:58 PM   #7
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Re: 1971 Chevy oil pan help

I did this job on my 70 a couple of months ago. What a pain! I had to take the front of the engine apart (water pump, harmonic balancer, timing chain cover etc) and then put a 2x4 between the frame and the motor mounts to raise the engine enough to get the pan out. I used the Felpro 1 piece gasket and rtv at the edges per the felpro instructions. I will say it fixed my oil leak. Nice and dry underneath now.

It might have been quicker and easier to just pull the engine, I just don't have the room to do it.
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