70 emergency brake and wiring in a 68 firewall
 

My donor truck is a 68 and I'm looking to swap in the wiring and ebrake from my 70. Anyone done this? I can see that the firewalls are different from my tear down pics. The green/blue is the 70 and the saddle is the 68

Re: 70 emergency brake and wiring in a 68 firewall
 

Interestingly enough the problem is actually with the location of the 68's fusebox, you will need another hole for that cause it needs to move over.

I would make a template of the firewall for the 70 but start with that particular mod before worrying about the brake placement.

Re: 70 emergency brake and wiring in a 68 firewall
 

Instead of a template I would cut out the firewall from the 70 and weld it into the 68.

Re: 70 emergency brake and wiring in a 68 firewall
 

Unfortunately the 70 firewall is long gone! I'll have to find a source for a template

Re: 70 emergency brake and wiring in a 68 firewall
 

If it were me I’d remove fuse box, install e brake, then eyeball the new location for fuse box. Then weld up old fuse box hole.

If you want it to be perfect, as has been suggested a later firewall would be handy, you might be able to find a garbage cab at the junkyard to cut it out of.

Good news is it is quite doable, the e brake itself should need no modification.

Re: 70 emergency brake and wiring in a 68 firewall
 

Thanks

I didn't take great pictures of how the ebrake goes in though. Between the two pics I'll take your advise and eyeball the fuse block location.

Re: 70 emergency brake and wiring in a 68 firewall
 

Wes at classicheartbeats (?) did it to a suburban but that part of his build doesn’t seem to be available online anymore, maybe he can help. Good luck!

Re: 70 emergency brake and wiring in a 68 firewall
 

Why do you want to run the 70 harness? Is it because of the P.B. taking up the space were the 68 fuse block is now?

Re: 70 emergency brake and wiring in a 68 firewall
 

I put a 72 brake assembly in my 67. I just rotated the fuse block 90 degrees so it sits the long way up and down. It's a tight fit next to the brake assembly but it fit. Just drilled two new holes for the fuse block once it was rotated. I had to drill holes for brake assembly and install that first.

Re: 70 emergency brake and wiring in a 68 firewall
 

Great information thanks. Is the installation of the 72 e brake pretty much intuitive?

Thanks

Paul

Re: 70 emergency brake and wiring in a 68 firewall
 

For the most part it is but I did some other things along the way that made it easier. I was replacing the full dash anyway f to install AC so I used one from a 72. That one has the hole on the bottom just above where the new foot pedal brake handle will be. Then I just made a template of cardboard from the 72 firewall to make sure my two bolt holes lined up for the assembly. A bit of trial and error but it is solid and functions great. I also got a new cable for a 72 while I was at it.

Re: 70 emergency brake and wiring in a 68 firewall
 

My 70 harness is in much better condition compared to the one from the 68. The main reason for the ebrake swap is the 68's was mia.

Re: 70 emergency brake and wiring in a 68 firewall
 

A picture of a 72, possibly it will help?

Re: 70 emergency brake and wiring in a 68 firewall
 

Thanks!

Can someone take a pic of the placement of the ebrake assembly under the dash?

Re: 70 emergency brake and wiring in a 68 firewall
 

Here is my 67 converted with the fuse block rotated.

Re: 70 emergency brake and wiring in a 68 firewall
 

Thanks! The pictures will be a big help!