is my 68 oil pressure line correct?

[Patrick N.]

I think I have this correct, but could use some help on my setup for the oil pressure line and fittings to confirm.
My car is 68 L68. The black plastic oil pressure line and "clip" were on the block when I purchased the car. I believe this is correct for 68. The fittings are what I think are correct based on my investigation of what the setup should be but unsure if I am correct.

Any feedback is appreciated.
Pat

[Paul O.]

Re: is my 68 oil pressure line correct?

This is the wording in the latest addition of the 68-69 Judging Guide. So from your photo and how it reads in the guide I would have to say no.

Oil Pressure Line

The 327 and 350 oil pressure line is one piece black plastic 1/8 inch diameter
with small white lettering. All fittings are brass. A small piece of black cloth tape
holds the oil line and tachometer drive cable together.


The 427 oil pressure gauge line from the engine block to the right angle bracket
is natural finish steel with natural brass fittings at each end. A right angle natural
finish bracket bolts to the rear of the cylinder head and supports the line. The
bracket is fastened to the cylinder head by an indented hex head bolt with an
integral star washer. A 1/8 inch black plastic tube with small white lettering goes
from the brass fitting through the firewall to the oil pressure gauge. (See Fig. M
23.3)

[Patrick N.]

Re: is my 68 oil pressure line correct?

Thanks for the help Paul, not sure where I crossed my signals on this one. Will redo.

[Paul O.]

Re: is my 68 oil pressure line correct?

Patrick

Do you have the latest 68/68 Judging Guide as there is an excellent photo that should help you.

[Gary B.]

Re: is my 68 oil pressure line correct?

Patrick, I would leave what you have alone. It might be correct.
I looked at a real original 68 yesterday, June 25th car, 427-390hp. Very similar oil line setup.
If and when the 5th Edition TIM&JG gets updated again, this needs to be corrected.
We are always finding new items to add and correct.
Gary Bosselman

[Patrick N.]

Re: is my 68 oil pressure line correct?

Thanks Paul and Gary for the information. One aspect of this project and NCRS membership I enjoy is the discovery of information and learning how these cars were set up from factory. I would be interested if anyone out there has a similar configuration to your picture Gary?

The fittings from my block are different than both examples. The examples you both show are more logical in that the line does not "loop out" so much like my set up. My fittings are also not consistent with what is in the AIM -which prompted my confusion. I think it makes sense to revise my fittings.

Thanks again guys, I really appreciate your help
pat

[Patrick N.]

Re: is my 68 oil pressure line correct?

BTW, this is the only white markings I fond on the line that are readable...

[Patrick N.]

Re: is my 68 oil pressure line correct?

... they say PART NO. I cannot find other markings

[Rich G.]

Re: is my 68 oil pressure line correct?

My July 68 is the way Gary describes it. The car was a body on restoration of a 30K Miles garage find. I didn’t do the work, but it would seem to make sense that the restorer would replicate what they found vs changing something. This restoration was done in 1990 or so. Before a lot of people cared about details like this.

Rich

[Paul O.]

Re: is my 68 oil pressure line correct?

Here is what we found on a 71-72 big block.

[John C.]

Re: is my 68 oil pressure line correct?

Patrick

I think the setup you show is essentially correct for a 68. I have the same setup on my 68 L71, see attached picture. I think you might have to many adapters however.

The bracket and bolt on the head were not painted orange. They were unpainted on my car and the AIM shows them being put on the car at St. Louis and not the engine plant.

John

[Patrick N.]

Re: is my 68 oil pressure line correct?

Awesome info, thanks for taking time to share these images. I will play with the adapters to get that squared away for sure. Thanks John for the heads up on the clip being natural finish. Looking at Gary's post, it seems to be unpainted as well.

Best,
Pat

[Dale C.]

Re: is my 68 oil pressure line correct?

I guess I could put my two cents worth in. I think there is some confusion from the AIM. First, the 67 BB L36 oil line came off the block kind of straight out and then made a hard 90 bend, upward, in the direction of the firewall. Then in 68 this hard turn was probably remedied by using that TEE fitting #7, 9409943 for the 68 L36. It is also somewhat misleading as this L36 drawing depicts the pressure switch connection that is used with the three duce's. It's shown as being subdued on the L36 page and then not subdued on the L71, A6 page. The 68 BB L36 and L71 used the oil pressure clip 3784832 (not a bracket) with Screw and Washer, 3817006 & 606404. Looking at the AIM L71, A1 page they did use the same parts with the exception of the bushing 444030. The big difference between the 68 and 69 was the changing of that clip to a bracket. This Bracket #11, 3954228 in the 69 AIM L36, A5 cradled the fittings of the oil pressure 69 PIPES #6, 3961560 and not the 68 L36 single PIPE #A53923973.

[Dale C.]

Re: is my 68 oil pressure line correct?

Just looked at this some more and I think I will wait to work on mine, till we get it right. I think the AIM differs from the JM and would probably go with the AIM. I found what I think is correct form the 1968 L36 and L71 and it has the switch pick up, see picture. The JM doesn't address the huge differences of the Big Blocks from 68 to 69 so its not correct yet.

[Patrick N.]

Re: is my 68 oil pressure line correct?

Dale, I assume the L68 would fall in line with whatever the L71 turns out be if all are the same across SB / BB?