1970 power brake line

[Mathew S.]

My power brake line has two bends in it, and is missing the bracket. I was thinking about replacing it, but all of the ones I have seen just have one bend. My car is a July 18, 1970 build date and not sure if that matters. I would attach a photo but it won't let me do this via my iPad.

[Terry M.]

Re: 1970 power brake line

My power brake line has two bends in it, and is missing the bracket. I was thinking about replacing it, but all of the ones I have seen just have one bend. My car is a July 18, 1970 build date and not sure if that matters. I would attach a photo but it won't let me do this via my iPad.

Let's see if this works:

1970 passenger side.jpg

It is my January 29 built car, but the PB vacuum tube is probably correct for a later 1970 SB.

[Mathew S.]

Re: 1970 power brake line

Apparently the iPad app won't let you attach on the opening post but on the replies it will, in theory. This is the one that I have currently and wasn't sure if difference between early, mid and late run cars. Well maybe it won't let me. I guess I'll attach it tomorrow from my PC.

[Mathew S.]

Re: 1970 power brake line

Adding photo of power brake line that I have.

[Mathew S.]

Re: 1970 power brake line

An additional photo.

[Terry M.]

Re: 1970 power brake line

I should have remembered it is a BB. That could make all the difference. I'll have to check my files at home for pictures, or perhaps someone has a 1970 fat motor with PB that they can help with.

[Joe L.]

Re: 1970 power brake line

I should have remembered it is a BB. That could make all the difference. I'll have to check my files at home for pictures, or perhaps someone has a 1970 fat motor with PB that they can help with.

Terry and Mathew-----


I have conflicting information on this. The AIM says that LT-1, LS-5, and LS-6 (which did not exist for 1970) used pipe assembly GM #3981090 and other engines used GM #3973470. So, if this is how it actually was, then the LT-1 and LS-5 pipe assemblies ought to be the same.

GM parts information says different. This says that SHP 350, 454 (i.e. LT-1 and non-existent LS-6) used the GM #3981090 whereas EXCEPT SHP 350, 454 used the GM #3973470.

Which do I think is correct? The GM parts information.

By the way, either of the above have a single bend. The only difference is the location of the attached bracket.

[Joe L.]

Re: 1970 power brake line

Terry and Mathew-------


I should also have mentioned that the 1971-72 pipe for base engine and LS-5, GM #3989025, did have two bends, including a 90 degree bend at the fitting end.

[Mathew S.]

Re: 1970 power brake line

The wiper canister is also a later one (bend on front). Wonder if late cars (G18 build) got some of 1971 parts. I'll likely order a line at some point and put this one on the shelf.

[Terry M.]

Re: 1970 power brake line

I should have remembered it is a BB. That could make all the difference. I'll have to check my files at home for pictures, or perhaps someone has a 1970 fat motor with PB that they can help with.

This should work better: 1970 # 8448
DSCN4035.jpg