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I'm looking for the 6-quart LT-1 oil pan for an early 1970 LT-1 CTU engine. The GM parts books states the oil number was 3956670 and the new number is 359942. Moreover, the parts books indicate that it's the same oil used by the fuel and solid lift mid-year cars. Is this actually true of the original pans? If there is a difference, how can I tell? I need some information and/or pictures to properly obtain the correct oil pan. Thanks, Bunky
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Re: Early 1970 LT-1 CTU 6-quart Oil Pan
Bunky, I believe that this is the pan that Tom Keen is reproducing. Check with Keen Parts in Cincinnatti to be sure. It is identical to a pan that I removed from a '71Dick Whittington -
Re: Early 1970 LT-1 CTU 6-quart Oil Pan
Thanks Dick; however, I just check Keen and they did not advertise on-line for the larger pan for 1970. The 1971 oil pan should be the small pan similar to my 1970 350/350 car. Keen does advertise the FI/Special HP pan for 63-65 cars. Would that be the same pan as I need?Comment
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Re: Early 1970 LT-1 CTU 6-quart Oil Pan
Call them or send them an email. I am thinking that it is the same pan. Little elves have walked off with my 1972 parts book.Dick WhittingtonComment
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Re: Early 1970 LT-1 CTU 6-quart Oil Pan
e-mail sent. We'll see what they have to say. Thanks, BunkyComment
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Re: Early 1970 LT-1 CTU 6-quart Oil Pan
Long ago and far away (in the early to mid-1990s as I remember) we did a story for The Restorer on this very subject. Even if you can find the correct part number, I believe the 6-quart pan is long discontinued. In it's last iteration the arch at the front of the pan has a different radius than the originals. That pan came with a thick gasket to compensate for that larger radius, but this is easy to see in judging -- if that matters to you. I am sure Joe Lucia will have more to say on this subject.TerryComment
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Re: Early 1970 LT-1 CTU 6-quart Oil Pan
I found the article on my Restorer CD. Thanks Terry.Comment
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Re: Early 1970 LT-1 CTU 6-quart Oil Pan
Bunky-----
The "6 quart" oil pan used for 1963-65 with solid lifter engines is virtually the same pan as used for 1970-72 small blocks with "6 quart". The 63-65 as well as the 1970 "6 quart" pan was GM #3820001; the 71-72 "6 quart" was GM #3956670 which also replaced the GM #3820001 for SERVICE. It's possible that the 3956670 was used prior to 1971. GM says that it wasn't, but it's a 1969 part number. Anyway, it's moot; I can discern absolutely NO difference between these 2 pans, so, whatever the difference is, it's "invisible".
The GM #3956670 was discontinued about 1975 and replaced by GM #359942. Except for the front oil pan seal radius, the 359942 and the earlier pans are absolutely identical. The earlier pans have a 2-1/4" seal radius; the later have a 2-3/8" seal radius.
In any event, all of the original 63-72 "6 quart" small block oil pans are virtually identical.In Appreciation of John HinckleyComment
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Re: Early 1970 LT-1 CTU 6-quart Oil Pan
Thanks Joe. I looked some various pans while in Old Town and could not tell the difference either. I wanted to buy one, but I decided to do my research before letting go of the $$$$$$$$.Comment
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Re: Early 1970 LT-1 CTU 6-quart Oil Pan
This is what your looking for.
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Re: Early 1970 LT-1 CTU 6-quart Oil Pan
Yes it is and thank you. I am losing my bid right now. I found several of these oil pans used for $150 range at Old Town a couple of weeks ago.Comment
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