Inliners International Forums General Discussion Engines 261 full flow oiling

I just acquired a 261 to put in my little truck (3100 series) but can't seem to get a handle on this full flow oiling and remote filter yet. The block casting number is 3769925 and everything I can find show it to be a 58-62 block. Inside the block it is stamped c60 in several places. Any one know what this means? The oil pressure outlet from the block has been reduced down and has just an oil pressure line for the gauge. There is a plug where I thought the oil fitting for the return line should go. There is a plug (I believe) just to the left of this. Have been told this plug has to be driven in (how far?) to re-route oil flow. Inside the block where the plug is is a fitting that I assume goes to the discharge side of the oil pump. Can anybody describe how this block should plumb, or better yet, have any pictures? Block is going to be bored early next week and I'd like to do any drilling or tapping early so I can get vatted at one time. Thanks.

Click on the link "Tech Tips" in the blue tool bar to the left and then click on "Full Flow
Conversion" then click at the top of Jack Halton's article the engine(s) you want to look at.

cgresham 1212;

Here is a link to a pic of my 261 as I set it up for a remote full flow filter:

http://www.chevygmcofkc.org/Gallery/showphoto.php?photo=2373&papass=&sort=1&thecat=500

The hole nearest to the filter is for the return line and the hole closest to the firewall is for the incoming line. The "plug" that needs to be driven in is just above the reurn line. I drove mine in about 1/2". I have been using mine for about a year now and everything seems to work well. Let me know if you need any further help.

57 Mike

to "57Mike"

You have a very nice looking truck !!
I really like your exhaust manifold.

One question for you, did you use the same paint for your motor as you used on the truck ?
If so, is it holding up? If not, then you found a pretty good color match.

I've often wondered how those Mag. pictures of motors painted the same color as their cars, ever hold their color if they are driven. ??

Looks like you do good work too.

Ed

57 Mike,
Thanks for the reply and pics. I've been told if you drive the plug in too far you'll shut off the oil gallery. Is this correct? I'll drive the plug in 1/2" as you indicated unless otherwise noted. The installation of the filter looks very neat. Any part numbers for the bracket, remote adapter and the filter? Are you using rubber or steel lines?
Thanks, again,
cgresham1212

Thanks to everyone for the nice compliments on my truck. It has been both a lot of work and a lot ot enjoyment.

The subject of full flow oil filters for 235s and remote oil filters for 261s has been addressed by lots of folks before. I just took what they have done and applied it to my truck. The filter bracket was of my own design and fabrication and I picked up the remote filter setup at a local swap meet for $15.00. The oil lines came with the filter. The fittings are just standard fittings you can get at any good hardware store. As far as how far to drive the plug in goes, what I did was I took a drift that was approximately the sme diameter as the plug and I went very slow and easy. It took a little more effort than I thought it would to get it moving, then I went easy until I felt resistance and then I quit at about 1/2". Here are a couple of links that will help with your installation.

http://www.stovebolt.com/bboard/cgi-bin//ultimatebb.cgi?ubb=next_topic;f=2;t=003678;go=older

http://www.speedprint.com/Deves50/OilFilterInstall.html

As always if there is anything else I can do to help, please let me know.

57 Mike