I need suggestion on why a/c pulley is not lining up right.
 

heres pics of what I have going on. This engine is a 79 350 that I have bought parts for to make it look like it should have in my 69.. The a/c brackets are from a 69 the pulleys are from a 71 or 72 . As you vcan see in the pics I have to "shim" the back of the compressor to get it to line up. all other belts line up just fine. I'm not sure what I have going on here hoping someone may see something wrong and tell me. The shim thing isn't going to work because the top bracket won't line up. If you see or know what's going on here let me know... thanks in advance,

Re: I need suggestion on why a/c pulley is not lining up right.
 

a few more

Re: I need suggestion on why a/c pulley is not lining up right.
 

1 more

Re: I need suggestion on why a/c pulley is not lining up right.
 

I had a double water pump pulley on the 305 and the AC went on the second puley so you 3 row it should be on the middle pully not the outter 3rd one.:chevy:


http://67-72chevytrucks.com/gallery/...m/IMG_1651.JPG


Here is the correct belt line up for a small block.

Outside belt is crank and power steering. Middle belt is crank water pump and AC. Inner belt is water, crank and alternator.
:chevy:
http://67-72chevytrucks.com/gallery/...um/Belts31.jpg

Re: I need suggestion on why a/c pulley is not lining up right.
 

Are you sure the pulleys and brackets are for short or long water pump ?

Re: I need suggestion on why a/c pulley is not lining up right.
 

they suppose to be short, but thats what I 'm wondering

Re: I need suggestion on why a/c pulley is not lining up right.
 

I posted a pic..... I guess the problem is the crank pulley... If they were for a long waterpump would the other two belts still line up?

Re: I need suggestion on why a/c pulley is not lining up right.
 

From this picture it looks like you need a differant crank pulley setup. Your crank shouldn't have that big gap between the pulleys. They should all be tight and they should line up fine.:chevy:

http://67-72chevytrucks.com/vboard/a...1&d=1429489746

Re: I need suggestion on why a/c pulley is not lining up right.
 

That's what i'm guessing that too,, but all the pulleys came off the same engine I bought them from a forum member ? I 'm trying to contact him but no luck so far

Re: I need suggestion on why a/c pulley is not lining up right.
 

Just heard from the member they are a short w/p set off a 69 c20 ? So if anyone has any idea's let me know

Re: I need suggestion on why a/c pulley is not lining up right.
 

GM had so many variations of pulley combinations it's ridonkulous. Single, double, triple, quadruple, A/C, no A/C, P/S, 2wd/4wd, small block, big block.

Typically, for an A/C & Power steering set up you would have a double groove pulley on the W/P and a triple on the crank. The inside is for the Alternator, middle for A/C, and outer for P/S.

Move the A/C to the middle and get a new crank pulley. The seller didn't mislead you, the truck it came off of had a different set up. I can't really tell from the pics, but does your crank only have two grooves? It looks to me like the truck your pulleys came from had PS but no A/C.

http://www.67-72chevytrucks.com/vboa...1&d=1184785144

Re: I need suggestion on why a/c pulley is not lining up right.
 

The crank pulley looks correct to me for a SWP, just wrong "set up." The long water pump crank pulley sits far off the balancer, like this (I converted my truck from a 73+ LWP to correct looking SWP set up):

http://www.67-72chevytrucks.com/vboa...1&d=1184784270

Re: I need suggestion on why a/c pulley is not lining up right.
 

The pulley set for a SWP keh27 got from me when I parted out C20 I had awhile back. The AC brackets on my truck looked different from what you are using at least it looks like to me. I wonder, are you using a different balancer perhaps that is not quite as thick? The one that was on my C20 was pretty massive. The threads in the end of the crank snout were bad so I couldn't pull the OEM balancer off.

Re: I need suggestion on why a/c pulley is not lining up right.
 

The pulleys you have are for a short water pump setup, its just that your lower inner crank pulley is for a non-ac setup. The pictures that ANDY4639 posted are correct, The grooves that you have your AC belt on in the pictures are originally intended for a smog pump.
You just need a double groove crank pulley like this:
http://www.ebay.com/itm/63-64-65-66-...58383c&vxp=mtr

Re: I need suggestion on why a/c pulley is not lining up right.
 

I fought and fought and fought with issues on my truck with pulley combos for years. What happened to me was under certain RPMs, the alternator belt would set up a vibration that was actually quite wild and would eventually snap off the alternator mounting bracket. Which on a truck without AC also takes out your water pump. Which is bad. (I added AC later).

What I finally ended up doing is getting a FULL set of pulleys off of a truck that wasn't bastardized by one or more previous owners. Since I was planning to add AC I made sure I got them all off of a truck the the general made with AC.

That was over 10 years ago. I have never looked back.

Long story short, watch the parts board for a fresh part-out and ask to purchase all the pulleys on the water pump and all the pulleys on the crank.

Re: I need suggestion on why a/c pulley is not lining up right.
 

http://67-72chevytrucks.com/vboard/a...5&d=1423780677

This was one of the under hood pics I took. This was a factory AC truck-he opted to not take the AC brackets since he already had those...but, mine are different than he shows. ???
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Re: I need suggestion on why a/c pulley is not lining up right.
 

Man I'm not blaming you at all. If it sounded that way I surely didn't mean for it to....i'm just needing help to figure it out. I do know that 67-68 a/c brackets are different but I thought 69-72 where the same . It could be all on me but I was wanting some insight.

Re: I need suggestion on why a/c pulley is not lining up right.
 

My '71 with A/C does not use that top bracket that shows in the PO's photos. If I remember, I will snap a photo this evening.

Re: I need suggestion on why a/c pulley is not lining up right.
 

The pictures I posted are the correct setup for a c-10 small block short water pump with factory alternator, AC, power steering. If you want to mix and match the pulleys that fine but the correct setup is as I showed. The setup you have is for a non AC truck.

Factory AC brakets:

http://67-72chevytrucks.com/gallery/data/580/AC_71.JPG

This shows the belt routing.
http://67-72chevytrucks.com/gallery/...0/DSC01766.JPG

Factory AC brackets I took off and sold.

http://67-72chevytrucks.com/gallery/...1/DSC01590.JPG

Re: I need suggestion on why a/c pulley is not lining up right.
 

thanks everybody for the help

Re: I need suggestion on why a/c pulley is not lining up right.
 

I had some time tonight to do a little research ......
Found this thread.http://67-72chevytrucks.com/vboard/s...d.php?t=130114

Re: I need suggestion on why a/c pulley is not lining up right.
 

My '71 setup is similar to post #16 of the above link....no top bracket. It works fine.