Removing oil pan - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Gary 70 Jimmy** · 09-24-2013, 11:54 AM

I have a 70 jimmy 4x4 can you remove the oil pan when motor is still in the truck.

**TBONE1964** · 09-24-2013, 12:27 PM

Yes, you should be able to. You may have to remove the engine mount bolts, the fan shroud and jack the engine up a little to clear your cross member. It has been a while but I think 4 x 4 cross-members are easy to work around.

You may not have to jack anything up. Just make sure it comes out with out fighting it. If you fight it coming out, then you fight it going back in and most likely mess up a new gasket in the process.

Take your time and it should be a real easy job.

jaros44sr · 09-24-2013, 01:42 PM

Gary, its been awhile, but IIRC, i was able to remove the whole cross member by sliding one side forward and the other side back. I had my motor supported from the top by way of a carb plate and hoist. I think that i had to disassemble the engine stands from the crossmember.

You can get more room by removing the distrubtor cap, and going higher on the hoist. Also, i think if you rotate your engine so that the first journal is at the 12 o'clock position, it will give you more clearance if you dont remove the cross member....

I know your truck is all stock, but this is why we had DIY4X4 modify their one piece crossmember to have the flanges welded in so i could drop the center section of the cross member. Makes it so much easier to remove the pan, without unbolting the engine from motor mounts

Good luck on your fix, and wish you many more trophies in your future....truck looks great!

PS....the fan shroud will have to be unbolted, and it might not be a bad idea to unbolt the down pipe from the manifolds, but maybe not. Hope you are using the one piece gasket with the alligning pins that go into the mounting bolts for the oil pan. Makes it easier to install gasket without having gasket drop down

cleszkie · 09-24-2013, 05:42 PM

Last time I did it I unbolted the crossmember to slide it forward AND unbolted the engine mounts to jack the engine up. One thing to note - keep an eye on your distributor when you jack the engine up. If you have HEI, the cap will hit the firewall right away. A stock dizzy cap may also hit, but the valve cover may hit first. Remove the cap for a little more wiggle room.

09-24-2013, 11:54 AM	#1
Gary 70 Jimmy Senior Member Join Date: Jan 2002 Location: Burghill, Ohio 44404 Posts: 3,400	Removing oil pan I have a 70 jimmy 4x4 can you remove the oil pan when motor is still in the truck. __________________ 1972 GMC Jimmy 1/2 4X4 4wheel camper 1970 GMC Jimmy 1/2 4X4 350 1969 Chevy Blazer 1/2 4X4 307 1967 chevy LWB 3/4 396

09-24-2013, 12:27 PM	#2
TBONE1964 Cluster King Join Date: Nov 2012 Location: Junction City, OR Posts: 5,263	Re: Removing oil pan Yes, you should be able to. You may have to remove the engine mount bolts, the fan shroud and jack the engine up a little to clear your cross member. It has been a while but I think 4 x 4 cross-members are easy to work around. You may not have to jack anything up. Just make sure it comes out with out fighting it. If you fight it coming out, then you fight it going back in and most likely mess up a new gasket in the process. Take your time and it should be a real easy job. __________________ Contact me on all of your gauge cluster needs. I specialize in restoration, repair and parts sales for 67-72 Chevy and GMC trucks. email me at tbonegarris@yahoo.com I am also a dealer for Counterpart for gauge cluster parts only. Also see my facebook page, CG&C

09-24-2013, 01:42 PM	#3
jaros44sr Registered User Join Date: May 2006 Location: Philadelphia, Pa. 19454 Posts: 9,421	Re: Removing oil pan Gary, its been awhile, but IIRC, i was able to remove the whole cross member by sliding one side forward and the other side back. I had my motor supported from the top by way of a carb plate and hoist. I think that i had to disassemble the engine stands from the crossmember. You can get more room by removing the distrubtor cap, and going higher on the hoist. Also, i think if you rotate your engine so that the first journal is at the 12 o'clock position, it will give you more clearance if you dont remove the cross member.... I know your truck is all stock, but this is why we had DIY4X4 modify their one piece crossmember to have the flanges welded in so i could drop the center section of the cross member. Makes it so much easier to remove the pan, without unbolting the engine from motor mounts Good luck on your fix, and wish you many more trophies in your future....truck looks great! PS....the fan shroud will have to be unbolted, and it might not be a bad idea to unbolt the down pipe from the manifolds, but maybe not. Hope you are using the one piece gasket with the alligning pins that go into the mounting bolts for the oil pan. Makes it easier to install gasket without having gasket drop down __________________ Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim Last edited by jaros44sr; 09-24-2013 at 01:52 PM.

09-24-2013, 05:42 PM	#4
cleszkie Registered User Join Date: Feb 2003 Location: Santa Ana, CA Posts: 2,191	Re: Removing oil pan Last time I did it I unbolted the crossmember to slide it forward AND unbolted the engine mounts to jack the engine up. One thing to note - keep an eye on your distributor when you jack the engine up. If you have HEI, the cap will hit the firewall right away. A stock dizzy cap may also hit, but the valve cover may hit first. Remove the cap for a little more wiggle room.



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