67-68 and 69-72 Differences

[Vandals909]

I bought a truck that was basically pieced together. It is registered as a 1971 but has a 67 front clip. It does have 5 lug all the way around and disc on the front. It has 67-68 interior and steering wheel.

I'm looking at ordering a complete wiring harness from AAW and it says it only works for a 69-72.

From reading all the threads it appears the AAW kit does not work for 67-68 due to an interferance issue with the emergency brake and something about the wipers.

1. What is the different in the wipers for the 67-68 and the 69-72?

2. My truck does not have an emergency brake at all right now. Is there a way to see which emergency brake would work the 67-68 or the 69-72? Are there different mounting wholes it should have for each style? Pictures would be best. I eventually would like to install an emergency brake.


Thanks to anyone who can offer some knowledge.

I'm hoping they took a 71 truck and put a 67 front clip on it.
Thanks again

[gonnuts]

I know 67 front park lights go out when headlights are on, also don't have side markers of corse, 68's do though(have side markers). Maybe 69-72's brake light comes on when you put the E-brake on like newer vehicles, I've never seen one it worked on if thats the case.

[C/10 King]

As soon as Ricky (67 first series) sees this thread you will know everything about these trucks.

[LockDoc]

-
This might help also.

http://www.pattson.com/maych/67_72_chevy.htm

LockDoc

[Vandals909]

Thanks for the replies guys. I just want to make sure I have a 71 with a 67 front clip.

I'm not sure if it was available in 67-68 but my dash does have a factory, speedometer, fuel, battery, temp, oil pressure gauges and, wiper, light switch. If that makes a difference.

[leddzepp]

check the vin number on the cab. you can decipher the year that way. also see if the cab vin plate is attached with rosette (flower shaped) rivets. post some pics of the truck when you can. i am in the 909/951 area.
Posted via Mobile Device

[Vandals909]

I will try to get some pics up later today.

I sent an email to AAW and this is the response I received. Seems like I shouldnt have an issue.

The parking lamp connections are a different configuration. You would just have to cut your parking lamp leads off and replace them. Also, there are no side markers on the 67 fenders. In your instance, you just do not wire them in, that's all. The dash cluster and location of the switches are the really big differences and with you using a 71 dash insert, there will be no problem sir. It should serve your purposes very well. Now, keep in mind that this is for a modified vehicle and is set up for an internally regulated alternator and a HEI or other electronic ignition.

Donny

Don Bock
R&D Manager
American Autowire

[Vandals909]

Now to find which vendor can give me the best price. I Pm'ed one or two but havent heard back yet.

Who'd be the cheapest?

[leddzepp]

I think the price for AAW harnesses is pretty universal. LMC, Brothers, The Truck Shop all have them priced the same.

[Vandals909]

I would love to spend with one of the vendors but their listed prices are about $70 (without adding in tax) more then rockauto and another ebay seller.

We'll see if the vendors I Pm'd get back to me.

[starvinartis]

Just my .02 here; 1971 cabs have a raised area at the top center of the windshield (inside cab) for the rear view mirror, only year that had that as far as I know, in 72 they glued the mirror to the windshield

[BMERDOC]

I found that on my 67 the wiper switch is stacked above the headlight switch and the choke is where the wiper switch is on the other trucks. Im sure that has some bearing on the dash harness.

As a side note GONNUTTS!! I could kiss your feet right now! I noticed my front park light go out when I turned on the headlights but backburnered diagnosis for more important repairs. Imagine my hair pulling when my diagnosis would end up at a dead end. Thanks for the information!!!!

[ETsC10]

I have read that the thing with the e-brake is where the harness enters through the firewall and possible
interference with the fuse block (?).
A 1967-68 e-brake is pictured. Later e-brakes are a push-pedal plus a pull rod for release.

[Vandals909]

I've never heard that before, I'll take a picture of mine and post it later tonight.

[Vandals909]

Well I went and took some pictures and I think I'm more confused. I appears by looking under the column that a 67-68 e-brake should be there right?

http://i809.photobucket.com/albums/z...9/IMG_2394.jpg

The vin tag last 4 digits are 1971. Makes me wonder if someone switched the vin tag?

http://i809.photobucket.com/albums/z...9/IMG_2387.jpg

http://i809.photobucket.com/albums/z...9/IMG_2386.jpg

what are the rivets supposed to look like?

[leddzepp]

Look at the VIN plates in this thread: http://67-72chevytrucks.com/vboard/s...d.php?t=471042

The rivets should look like that.

1971 at the end of the vin has no bearing on the year of the vehicle, that is the unit number that rolled off the assembly line.

[Vandals909]

Well the vin tag rivets are definitely not original. I found a website to decode the vin.
http://www.vehicleidentificationnumb...uck_67-72.html

It decodes to a 71, only thing that makes me think the vin tag was switched and not remove for paint in the last 40 years is the fact that the dash under the column has two whole in ii to mount a 67-68 style e-brake. What do you think?

[tantrumpipeline]

67-69 have narrower rear axle and 6 bolt, 70-72 are the wider axle by 1.5inches, 70 was 6 bolt, 71-72 are 5 bolt, this is half ton 2wd, ensure you check this prior to ordering axles, I heard it's a common mistake when I called my supplier to see what my problem was, a lot of years for PO's to mix and match parts, 5 lug conversions are very common

[67chevy1series]

Originally Posted by Vandals909

I bought a truck that was basically pieced together. It is registered as a 1971 but has a 67 front clip. It does have 5 lug all the way around and disc on the front. It has 67-68 interior and steering wheel.

I'm looking at ordering a complete wiring harness from AAW and it says it only works for a 69-72.

From reading all the threads it appears the AAW kit does not work for 67-68 due to an interferance issue with the emergency brake and something about the wipers.

1. What is the different in the wipers for the 67-68 and the 69-72?

2. My truck does not have an emergency brake at all right now. Is there a way to see which emergency brake would work the 67-68 or the 69-72? Are there different mounting wholes it should have for each style? Pictures would be best. I eventually would like to install an emergency brake.


Thanks to anyone who can offer some knowledge.

I'm hoping they took a 71 truck and put a 67 front clip on it.
Thanks again

well in 67 68 the wiper is on the left side of gauges on 69 72 the wiper switch is on the right so the difference is 67 68 the wiper wire is shorter 69 72 is longer.... so where ever you put the wiper thats the wiring you neeed to order... if your cab is indeed a 69 72 then it will have a foot operated parking brake 67 68 has a hand operated parking brake, a 69 72 cab is really really really really easy to convert to a 67 68 stlye e brake. so what stlye e brake do you have?

[68 TT]

Originally Posted by 67chevy1series

well in 67 68 the wiper is on the left side of gauges on 69 72 the wiper switch is on the right so the difference is 67 68 the wiper wire is shorter 69 72 is longer.... so where ever you put the wiper thats the wiring you neeed to order... if your cab is indeed a 69 72 then it will have a foot operated parking brake 67 68 has a hand operated parking brake, a 69 72 cab is really really really really easy to convert to a 67 68 stlye e brake. so what stlye e brake do you have?

Here are pics of my 67 and my 69 firewalls at the e-brake & wire harness connector area. The 67 is smooth and the 69 has a raised area where the mounting studs for the pedal type emergency brake are located. Pretty easy to tell apart.

From the design I would bet a 67-68 handle type brake would fit a 69-up cab but not the other way around. It looks like the fuse panel is too far outboard to clear the e-brake pedal assembly.

[68 TT]

Also note that the 67 wire harness comes through in a different location than the 69. You could probably cut a new opening to use a 69-72 harness in a 67-68 and relocate the wiper switch to the choke hole in your 67-68 dash panel.

If you can find one there are block off plates & plugs that go in the 67-68 choke hole opening to hide the choke lettering and fill the vacant hole that could be put over the left side wiper switch hole when it was moved.

You would still have to label the relocated wiper switch that is now in the choke labeled hole or you could just put a 69-72 dash panel on it instead and have a cleaner look.

I would go with the 69-72 dash panel.

[Vandals909]

Thanks for all the replies and help. I will have to compare the pictures of the firewall when I get home. Are there Vin markings anywhere on the frame? Someone said maybe on the driveside frame rail by the engine. But don't see anything there?
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[68 TT]

Originally Posted by Vandals909

Thanks for all the replies and help. I will have to compare the pictures of the firewall when I get home. Are there Vin markings anywhere on the frame? Someone said maybe on the driveside frame rail by the engine. But don't see anything there?
Posted via Mobile Device

Top of the frame rail just behind the steering gear box is a partial VIN. It is in 1/4" or so tall letters and will be easy to see once you brush off the grease & dirt in that area.

[ChevLoRay]

I'm glad you posted that pic, showing the differences on the firewall. I'd seen one in a recent post, and it also included a pic of a later pedal mounted to an earlier cab. Another thread had detailed how to patch in a replacement panel to be able to make the change...putting the pedal in a '67-8 cab.

The other option for a pedal-actuated brake is to buy the unit from Lokar. That may be what I do, because I already have the brake/accelerator pedals, as well as other pieces. It would save having to jerry-rig the later pedal to the earlier cab or trying to patch in a piece that I don't have...like from a '69-72.

Do you know what year your chassis is? Does it match your cab VIN? You can look on the driver's side frame rail. Here's a pic of my chassis, so maybe you can correlate yours to this one. The bracket on the left lower of the pic is part of the ebrake

[starvinartis]

The first pic is a 72 showing exit for e-brake cable, second is 67 cable exit.
Third pic shows the small bezel ignition switch (67) only, 4th is a 68 bezel/switch which was used up thru 72. The final pic shows the location of the wiper switch, located above the headlight switch, 67 & 68 used this configuration, but it was dropped in 69 because many people complained of accidently pulling the knob off the wiper switch believing they were pulling the headlight switch to on position. To avoid this confusion, the wiper switch was moved to the opposite side of instrument cluster in 69. Hope this helps. Again, my money is on your cab being a 1967 with little doubt.