Re: 1967 Chevy 327 Alternator Setup
 

Yeah, there certainly seems to be a lot of discussion about several different braces.


Clay

Re: 1967 Chevy 327 Alternator Setup
 

There are sure to be videos online about clocking your alternator. It merely involves removing the 4 screws attaching the two halves together, pulling them slightly apart to allow rotation, and putting the screws back in one the rotation is complete. Careful, because if you go to far apart you'll have to deal with reinstalling the brushes in the holder.

Re: 1967 Chevy 327 Alternator Setup
 

I am wondering if the valve covers are squared off more than 67 originals? This may account for some differences.

Does your stock set up have the cast iron water pump pulley?
I have only read about this pulley and have never seen one in person.

A better question is you goal to make it OEM stock or to just get what you have functioning?

Re: 1967 Chevy 327 Alternator Setup
 

I was able to reclock it. It gave me a little more room, but it still hits the valve cover. I will post up some pictures later.



Clay

Re: 1967 Chevy 327 Alternator Setup
 

I was wondering about the valve covers too. Unfortunately, I don't have the ones that came on it any more so I can't compare, but that may be one of the issues. My pulleys are GM, but not the cast iron ones. As far as goals, I am going for a stock look, but I am not going for factory. Basically, I want the truck to be a driver in a mostly stock manner.

I was looking at this alternator setup as well and that brace is available in a reproduction.


Clay

Re: 1967 Chevy 327 Alternator Setup
 

Your valve covers look to be the same as the stock covers that were on my 283. I went and measured the height from the flat on the top to the flange at approximately 2-3/8".

Also, a few more photos of the alternator position. My engine has a 6-3/4" crank pulley and not knowing what size is on your 327 suggesting a belt would be difficult. Also, I ran a string along the topside of my upper bracket and it measures approximately 14".

Not sure if any of this helps but hope it does some.

Re: 1967 Chevy 327 Alternator Setup
 

Looks like your w/p and crank pulley line up. Their are several different offset pulley's for the alternator. You may also be able to add a spacer behind the one you have. However you may run out of threads. Some of the factory pulleys are recessed on the end for this very reason.
The valve covers are likely the same height but the corners are rounded more. I was thinking this may be the difference?

Note: The upper alternator brace bolts to the rear of the alternator.

Re: 1967 Chevy 327 Alternator Setup
 

Thanks for that last note. Never noticed it in photos before and this was the way it was set up when I first got the truck. I will correct that issue this evening!

Re: 1967 Chevy 327 Alternator Setup
 

Looking at the picture of Accelo's and 67C10's setups, I see that the adjustment bracket for the alternator bracket mounts to the intake manifold, and it is a lot straighter. Maybe that setup would be better?

Re: 1967 Chevy 327 Alternator Setup
 

"I see that the adjustment bracket for the alternator bracket mounts to the intake manifold, and it is a lot straighter. Maybe that setup would be better? "

I believe you may be looking at the wrong picture. This is pg 2.
His is on the intake manifold, see picture on pg 1.
My apology if I am wrong on this.

Re: 1967 Chevy 327 Alternator Setup
 

You are right. I have a cold, it's making my head fuzzy. Thanks for the clarification.

Re: 1967 Chevy 327 Alternator Setup
 

Clay, did you figure this out? I'm going to get you a picture Saturday of an original 67 327 set up. I might also be able to get you the brackets off a 68 307 if they are the same. But, won't be able to look until Saturday.

Re: 1967 Chevy 327 Alternator Setup
 

subd been dealing with this same issue since forever with headers im using a Mr. gasket bracket attaches to the head with the header bolts I have clocked the alternator too still very little adjustment on the belt to the point of having to finagle the pulley on with the belt around next size down is to short and gets the alternator up against the valve cover and on and on and on

Re: 1967 Chevy 327 Alternator Setup
 

Hi Jason, yes I think I have it figured out. I need to make some tweaks to the upper brace. I found another 1967 K20 on the Internet that is original and it also has the brace mounting to the intake. Additionally, with the alternator being clocked correctly now, I seem to have enough travel to get the belt tension correct. Another issue that I have with my existing alternator is that the bottom bolt hole is wallowed out a bit and the steel bushing / sleeve that is in it is pretty worn as well. This makes the alternator deflect quite a bit which is what I believe is causing the pulley to not fully line up. I am going to get a new alternator and do some more tweaking to the upper brace and see if that fixes it.


Clay

Re: 1967 Chevy 327 Alternator Setup
 

Those are very common problems with alternators and short water pumps. If heads are aftermarket or Vortec with a raised valve cover "rails", even stock height covers will interfere. I actually extended my upper bracket by a couple inches and used a longer belt. It's tight, but I can remove the belt.

I'm not sure why your alternator pulley doesn't line up with the crank pulley. Here's my setup using a lower cast bracket that mounts to the head. I know your heads don't have bolt holes, but maybe this picture will help someone else.

Re: 1967 Chevy 327 Alternator Setup
 

I don't have a '67 or a 327, but I do have a different type of Alternator bracket on my '71 GMC Jimmy with a 350 and SM465 4-speed...
Also, I upgraded to the 12SI internally-regulated Alternator when the O'Reilly warranty part EVRs kept being dud after dud.
Short water pump.
Semper Fi.

Re: 1967 Chevy 327 Alternator Setup
 

Does the alternator move over the top of the valve cover? Do you have a photo of that?

Thanks.

Re: 1967 Chevy 327 Alternator Setup
 

The Alternator is pulled away from the valve cover.
I usually use a hammer handle to get leverage before tightening the Alternator bolt to the right belt tension.
I think the Alternator body would contact the valve cover without a tensioned fan belt. Also the type 12SI is slightly greater in diameter than the type 10 [w/ external regulator].
I'll try to shoot another picture later.
:gmc2:

Re: 1967 Chevy 327 Alternator Setup
 

Here are the pix I promised: