72 blazer 4x4 350 oil pan removal ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

man-a-fre · 10-23-2010, 12:09 AM

Has anyone cut the bottom out of the moter mount cradle to ease removal of the oil pan.My rear pan seal is leaking and it appears that this would be an easy option by cutting it just below the lower frame mount bolts and then fabbing it so it can be bolted back on, for easy removal if there is a next time.If you have done this please post pics,Or mabe it's a bad idea.

cleszkie · 10-23-2010, 01:47 AM

That sounds like a lot of work just to be able to drop the pan every couple of years. Just unbolt you engine mounts, jack up the engine until the exhaust manifolds touch the firewall and drop the pan. To make it even easier, you can "massage" the oil pan to clear the crossmember a bit more so it takes less engine lift to get it off.

Blazer1970 · 10-23-2010, 06:16 AM

Yup, easier to pull the engine IMO.

**Yukon Jack** · 10-23-2010, 02:50 PM

Not exactly easy but you can also unbolt the motor from the crossmember, loosen the transfer case mount bolts, lift the motor and then unbolt and physically remove the engine crossmember. Not easy but I've done it when I needed to modify that crossmember.

old man jimmy · 10-23-2010, 08:46 PM

Quote:

Originally Posted by Yukon Jack

Not exactly easy but you can also unbolt the motor from the crossmember, loosen the transfer case mount bolts, lift the motor and then unbolt and physically remove the engine crossmember. Not easy but I've done it when I needed to modify that crossmember.

That's how I've done mine a couple times. If I remember right the cross member comes off in four pieces and all just bolts in. I just hung the motor from a cherry picker took the mounts loose, and unbolted the cross member pieces, wasn't any problem at all.

man-a-fre · 10-27-2010, 02:43 AM

Cut it without jacking up motor ,worked real slick already had a holes drilled on upper side on both sides just had to cut 2" wide pieces of 3/16" plate plate and drill 2 holes works great looks great took 45 minutes.

jsand6769 · 11-04-2010, 03:31 PM

[QUOTE=man-a-fre;4262857]Cut it without jacking up motor ,worked real slick already had a holes drilled on upper side on both sides just had to cut 2" wide pieces of 3/16" plate plate and drill 2 holes works great looks great took 45 minutes.[/QUOTE

I wonder what the factory didnt do it that way, could be they thought it would decrease the crossmembers ability to handle load and cause a weak point in the frame. those rubber engine mounts will not do a thing to stop the frame rails from coming in twards the center in a wreck or even over time with the weight.

just a thought.

**jaros44sr** · 11-04-2010, 03:37 PM

easiest solution to the problem is to install a DIY4X4 cross member, unbolt the center section of their cross member and you have complete access to drop the pan

man-a-fre · 11-04-2010, 08:37 PM

Thats the way my modified original is now except i left the motor mount part in,i don't have to jack up the engine at all to remove pan the motor stays bolted in the whole time...

**jaros44sr** · 11-04-2010, 11:03 PM

Quote:

Originally Posted by man-a-fre

Thats the way my modified original is now except i left the motor mount part in,i don't have to jack up the engine at all to remove pan the motor stays bolted in the whole time...

got pics, I'd like to see it

RLTW375 · 12-10-2010, 08:39 PM

Quote:

Originally Posted by jaros44sr

got pics, I'd like to see it

Me Too!

10-23-2010, 12:09 AM	#1
man-a-fre Registered User Join Date: Jan 2010 Location: Ceresco,Ne Posts: 58	72 blazer 4x4 350 oil pan removal ? Has anyone cut the bottom out of the moter mount cradle to ease removal of the oil pan.My rear pan seal is leaking and it appears that this would be an easy option by cutting it just below the lower frame mount bolts and then fabbing it so it can be bolted back on, for easy removal if there is a next time.If you have done this please post pics,Or mabe it's a bad idea.

10-23-2010, 01:47 AM	#2
cleszkie Registered User Join Date: Feb 2003 Location: Santa Ana, CA Posts: 2,191	Re: 72 blazer 4x4 350 oil pan removal ? That sounds like a lot of work just to be able to drop the pan every couple of years. Just unbolt you engine mounts, jack up the engine until the exhaust manifolds touch the firewall and drop the pan. To make it even easier, you can "massage" the oil pan to clear the crossmember a bit more so it takes less engine lift to get it off.

10-23-2010, 06:16 AM	#3
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,507	Re: 72 blazer 4x4 350 oil pan removal ? Yup, easier to pull the engine IMO. __________________ Tim

10-23-2010, 02:50 PM	#4
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,689	Re: 72 blazer 4x4 350 oil pan removal ? Not exactly easy but you can also unbolt the motor from the crossmember, loosen the transfer case mount bolts, lift the motor and then unbolt and physically remove the engine crossmember. Not easy but I've done it when I needed to modify that crossmember. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

10-27-2010, 02:43 AM	#6
man-a-fre Registered User Join Date: Jan 2010 Location: Ceresco,Ne Posts: 58	Re: 72 blazer 4x4 350 oil pan removal ? Cut it without jacking up motor ,worked real slick already had a holes drilled on upper side on both sides just had to cut 2" wide pieces of 3/16" plate plate and drill 2 holes works great looks great took 45 minutes.

11-04-2010, 03:31 PM	#7
jsand6769 Registered User Join Date: Sep 2010 Location: windsor co Posts: 29	Re: 72 blazer 4x4 350 oil pan removal ? [QUOTE=man-a-fre;4262857]Cut it without jacking up motor ,worked real slick already had a holes drilled on upper side on both sides just had to cut 2" wide pieces of 3/16" plate plate and drill 2 holes works great looks great took 45 minutes.[/QUOTE I wonder what the factory didnt do it that way, could be they thought it would decrease the crossmembers ability to handle load and cause a weak point in the frame. those rubber engine mounts will not do a thing to stop the frame rails from coming in twards the center in a wreck or even over time with the weight. just a thought.

11-04-2010, 03:37 PM	#8
jaros44sr Senior Member Join Date: May 2006 Location: Philadelphia, Pa. 19454 Posts: 9,844	Re: 72 blazer 4x4 350 oil pan removal ? easiest solution to the problem is to install a DIY4X4 cross member, unbolt the center section of their cross member and you have complete access to drop the pan __________________ 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

11-04-2010, 08:37 PM	#9
man-a-fre Registered User Join Date: Jan 2010 Location: Ceresco,Ne Posts: 58	Re: 72 blazer 4x4 350 oil pan removal ? Thats the way my modified original is now except i left the motor mount part in,i don't have to jack up the engine at all to remove pan the motor stays bolted in the whole time... Last edited by man-a-fre; 11-04-2010 at 08:44 PM.



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