No luck at all, at least I have a new truck

[Jay2D2]

Well fellas I picked up a new to me 1984 Chev C10 Scottsdale today. Ran great on the trip home, went over to my buddies garage to check her over and top off the fluids and do a littl elight check and replace some bulbs. Well after that took it for a little ride all over town and went back to the shop because we heard an interesting humming noise which we attribute to the fan clutch but no big deal yet.

While looking under the hood we noticed a puddle of oil forming under the tuck. Lovely eh?
Well theres a lot of built up oil and grease down around the whole pan but I'm pretty sure its comoing from the pan itself.. the drip seems to be about an inch in front of and above the drain plug.  So I'll be changing the pan this weekend. My problem is that the truck was orignally a straight 6 and now has a small block in it, not sure if its a 305 or 350 though.. all things I was planning on checking in time.
I believe the current engine is an older model because the dipstick is on the driver side.  What I need to know is if all pre 1979? oil pans from small blocks are the same or if different years/models cars/trucks had different pans? I would also like to know if I can "upgrade" to a one piece gasket or is it not worth the trouble?  and if anyone had a fel pro part # for said gasket it would be greatly appreciated

Thanks in advance

[VileZambonie]

Yes the pans are the same. Get the casting # off of the back of the bock on the drivers side

[VileZambonie]

OS34510T

http://www.autozone.com/autozone/catalog/parts/partsProduct.jsp?displayName=Oil+Pan+Gasket&itemId=prod60603&navValue=15100529&parentId=cat30061&productId=74451&fromString=search&itemIdentifier=74451_0_12292_&filterByKeyWord=oilpangasket&categoryNValue=15199999&isSearchByPartNumber=false&categoryDisplayName=InternalEngine&store=5152&skuDescription=Felpro/OilPanGasket&fromWhere=&searchText=oilpangasket&_requestid=363455

[Jay2D2]

Also is it worth it while I'm in there to to do the pump and rear seal?

[VileZambonie]

Sure just make sure you use some good rtv like the right stuff on the corners of the gasket where the intersections are. Offset the rear main seal and use only a small amount. As far as the oil pump goes make sure you get a new pick up tube too. a tack weld or some jb weld is good insurance.

[Jay2D2]

With the one piece pan gasket should I glue it down with the 3M yellow or just use  a spray tack since its rubber?  and should i go around the complete pan with the right stuff?

[VileZambonie]

I would put a small amount of rtv in the corners and ends and glue the gasket up using the yellow snot. Once it's staying up there, lay a fine bead on the ends of the pan and bolt it up.

[Jay2D2]

Now Im a little confused, to I use the yellow glue to to glue the gasket to the pan or the block?  I was thinking pan but after the wording of your last post Im a little unsure.  I will be using the one piece gasket for sure anyway.

Also for the rear seal and and the oil pump are they the same for all pre-1979 small blocks or were there severl models available?

[VileZambonie]

Glue it to the block. There are different offset rear main seals available to counter groved or scored crankshafts but yes they are the same seal. Did you get that casting #?

[Jay2D2]

I havnt had a chance to get the casting numbers yet but I believe I found the right pan, GMP08A in SPI.
However the gasket doesnt seem to go over the rear lip of the pan.

[Jay2D2]

I was just talking to one mechanic and he says I have to jack the engine and what not, another mechanic says I have plenty of room to get it off without doing anything... I dont have  achance to go look under the truck till saturday and was just wondering what to prepare for.

[VileZambonie]

You won't need to jack the engine.

[Jay2D2]

Thank God for that, Im going to bring home the OS34510T but I also order the OS34509T for the older engines with the wider rear lip just in case.

Now to figure what trans is on there. am I right in assuming that same model transmissons from different years had the same filter/gasket?  Is there a number on the trans somewhere to figure what year it is?

[Chevalade]

If you google - transmission pan identification, you should be able to see by that.

[Captkaos]

Or you could just look in the technical section of the website
http://forum.73-87chevytrucks.com/smforum/index.php?topic=11124.0