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09-17-2018, 09:28 AM
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#1 |
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Oh,you can't buy that new
 
Join Date: Apr 2000
Location: Pennsville,N.J. 08070, USA
Posts: 2,039
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VORTEC OIL PAN from a 99 burb fit my 81 GMC?
I am rebuilding a 99, 5.7L roller vortec 'R' engine for my 81. I like the oil pan and windage tray on the vortec engine. will this stock suburban oil pan fit the square? thanx, Crossy
__________________
"been there, done that, ruined the T-shirt". 2007 LBZ GMC Sierra, ECSB 2006 LM7 RCSB Silverado 98 Vortec project. 94,3500,6.5L 4L80 81 SWB GMC POS finally gone  73 Pinto, stock, w/CragarSS's-eww  LOTS of Cummins trucks. |
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09-17-2018, 11:06 AM
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#2 |
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Registered User
Join Date: Oct 2011
Location: Tucson, AZ
Posts: 639
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Re: VORTEC OIL PAN from a 99 burb fit my 81 GMC?
Blocks should be the same, I would measure the pan and check to make sure the dip stick is in the same location (should be).
Double check just to make sure no one put in an older block from pre 79. 55-79 was different, but 80-99 (or whenever they changed block) should all be the same Oil pan.
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09-17-2018, 08:21 PM
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#3 |
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Registered User
Join Date: Aug 2005
Location: Louisiana
Posts: 711
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Re: VORTEC OIL PAN from a 99 burb fit my 81 GMC?
If you are wanting to know if the oil pan will fit the chassis and clear the crossmember and what not, yes, it will.
The '99 L31 oil pan will not fit the '81 block. |
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09-17-2018, 08:52 PM
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#4 |
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driving is in my blood
Join Date: Dec 1999
Location: Mesa AZ
Posts: 5,690
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Re: VORTEC OIL PAN from a 99 burb fit my 81 GMC?
Your answer is yes.
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-78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me. |
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09-17-2018, 08:52 PM
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#5 |
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Registered User
Join Date: May 2012
Location: horseheads,ny rust belt
Posts: 2,794
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Re: VORTEC OIL PAN from a 99 burb fit my 81 GMC?
i just set a brand new l31 vortec in my 1980's k30 truck no problems . its 4x4 . not sure if your doing 2wd or 4wd .
and i got my brand new l31 long block for just under 1800.00 delivered . not sure what your spending on a rebuild .
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77-k30lb BIG truck build . 87-k30lb budget beater build . 85-k30lb the plow machine build . 85-c10sb summer fun toy . ----------------------------- HOLLEY SNIPER efi = worst case of p.i.t.a i ever had . EDELBROCK pro flo 4 = best deal going so far . love my setup works great. |
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09-19-2018, 09:32 AM
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#6 | |
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Oh,you can't buy that new
Join Date: Apr 2000
Location: Pennsville,N.J. 08070, USA
Posts: 2,039
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Re: VORTEC OIL PAN from a 99 burb fit my 81 GMC?
Quote:
My engine was a 100% complete L31, and I noticed that oil pan in center had more of a taper than drop step like 81 pan had. but my ? is answered ,and I will proceed. I wanted to run the 99 pan because it has a small windage tray inside I want to retain, and also I can just keep buying 99 engine parts :-) - thanks guys
__________________
"been there, done that, ruined the T-shirt". 2007 LBZ GMC Sierra, ECSB 2006 LM7 RCSB Silverado 98 Vortec project. 94,3500,6.5L 4L80 81 SWB GMC POS finally gone 73 Pinto, stock, w/CragarSS's-eww LOTS of Cummins trucks. |
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