SBC Oil Pan Differences - The 1947 - Present Chevrolet & GMC Truck Message Board Network

badpeanut · 10-13-2011, 09:40 PM

The engine is currently out of my '71 Blazer 4x4 for a rebuild, and my machine shop pointed out that the oil pan has a longer deep section (10" as shown in the attachment) than the oil pan in my '72 LWB 4x2 (8" as shown in the attachment). The Blazer has no original engine parts anymore, and the LWB 4x2 has had some things changed so I can't vouch for either oil pan being correct.

1) What size oil pan is original for a SBC in these trucks?
2) What is the oil capacity of each of these pans?

Lee H · 10-13-2011, 09:49 PM

Not sure about the first question. Your service manual will have capacities for several different years for two wheel and four wheel drives.
Posted via Mobile Device

badpeanut · 10-13-2011, 10:14 PM

My 1972 factory Service Manual has less clarity than I seek. On page 0-8 it states all engines other than the 292 L6 require 4 quarts in the pan and 1 quart in the filter (AC PF-35).

The engine sits farther back in the 4x4 leaving more room for oil pan.

I looked under a 1977 Impala with an original 350 tonight; it has the 8" pan and uses the room between the pan and the crossmember for the exhaust Y-pipe.

badpeanut · 10-17-2011, 07:57 AM

Ttt

10-13-2011, 09:40 PM	#1
badpeanut Not a bad nut after all.. Join Date: Dec 2000 Location: ND Posts: 1,759	SBC Oil Pan Differences The engine is currently out of my '71 Blazer 4x4 for a rebuild, and my machine shop pointed out that the oil pan has a longer deep section (10" as shown in the attachment) than the oil pan in my '72 LWB 4x2 (8" as shown in the attachment). The Blazer has no original engine parts anymore, and the LWB 4x2 has had some things changed so I can't vouch for either oil pan being correct. 1) What size oil pan is original for a SBC in these trucks? 2) What is the oil capacity of each of these pans? Attached Images __________________ '05 Chevy 2500HD 4x4 '72 GMC LWB 4x2 driver '72 Chevy LWB 4x4 plow truck '71 Blazer 4x4 driver '70 GMC LWB trailer

10-13-2011, 09:49 PM	#2
Lee H Registered User Join Date: Jun 2010 Location: Upland Ca Posts: 4,148	Re: SBC Oil Pan Differences Not sure about the first question. Your service manual will have capacities for several different years for two wheel and four wheel drives. Posted via Mobile Device __________________ 1972 C10 SWB, Air, PS, PB, 350/350THM. Second owner. 1965 Corvette roadster, 44K miles, 327/365 SHP, 4 speed, side exhaust, knockoffs, teak, second owner (bought in 1970), Have ALL numbers matching components. My frame off restoration thread: http://67-72chevytrucks.com/vboard/s...d.php?t=556703

10-13-2011, 10:14 PM	#3
badpeanut Not a bad nut after all.. Join Date: Dec 2000 Location: ND Posts: 1,759	Re: SBC Oil Pan Differences My 1972 factory Service Manual has less clarity than I seek. On page 0-8 it states all engines other than the 292 L6 require 4 quarts in the pan and 1 quart in the filter (AC PF-35). The engine sits farther back in the 4x4 leaving more room for oil pan. I looked under a 1977 Impala with an original 350 tonight; it has the 8" pan and uses the room between the pan and the crossmember for the exhaust Y-pipe. __________________ '05 Chevy 2500HD 4x4 '72 GMC LWB 4x2 driver '72 Chevy LWB 4x4 plow truck '71 Blazer 4x4 driver '70 GMC LWB trailer

10-17-2011, 07:57 AM	#4
badpeanut Not a bad nut after all.. Join Date: Dec 2000 Location: ND Posts: 1,759	Re: SBC Oil Pan Differences Ttt __________________ '05 Chevy 2500HD 4x4 '72 GMC LWB 4x2 driver '72 Chevy LWB 4x4 plow truck '71 Blazer 4x4 driver '70 GMC LWB trailer



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.