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Big block belt/pulley configuration question

vegiguy

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What was the early '70's (1973 in my case) big block with AC and power steering (no air pump) belt and pulley configuration? I've pretty much figured out that the alternator and AC compressor were on a double belt set-up using the two inner pulleys on the four pulley crank pulley assembly, but I'm trying to figure out if the power steering pump was with the water pump pulley on one belt (and on which crank pulley) or if they were separate and the water pump pulley used an idler pulley for adjustment. Right now I'm leaning towards the PS pump being with the WP pulley on one belt since that's the way the belt descriptions are on the websites where you can buy replacement belts. Unfortunately the PS pump pulley and WP pulleys on my engine don't line up so I'm thinking if they are supposed to be on the same belt then either the PS pump pulley is bent inwards or I have the wrong WP pulley (which lines up with the fourth, or outer, pulley on the crank pulley assembly).

In case anyone wonders why I even ask this, I bought a big block engine from a salvage yard to swap into my RR in place of the 318 that was in it years ago, and when I went to pick it up I discovered that the yard worker had taken all the accessories off of it and had them strewn all over the ground along with some other parts. He told me it's their policy to sell them separately and that they aren't considered part of the engine I bought purchase-wise. So basically I just gathered together what I could that looked like they might fit the engine, paid for them and have been putting together a puzzle since. What a big and frustrating lesson I learned!

I would appreciate any information (including pulley diameters) and pictures on this issue.
 
Not sure but this may help...

4442748-68Plymouth383AC.jpg IMG_0451.jpg
 
I found the picture on the right, too - it's for a 1976 Winnebago so I didn't know if it would be the same as for 1973 B-bodies, otherwise I would just copy that and call it good. The alternator brackets on the left engine don't look familiar: maybe it's a sixties engine? Look at the difference in power steering pump pulley sizes between these two engines! I have the Federal style PS pump like the engine on the left but with a large three spoke pulley like the engine on the right. I don't even know if this is as it should be.

I wish there were reproduction assembly manuals available for Mopars like there is for GM vehicles because the different belt and pulley arrangements are spelled out very clearly in them. I have a 1973 Chrysler service manual and this isn't mentioned at all in it. I can't even find anything doing Google searches other than the above picture.
 
The early A/C Compressors required two belts since they put a heavy drag on v belt systems. Play close attention to belt width, making sure width of belt lays into the pulley and does not hang out above grooves. This will reduce chance of belt loss. I fyou got to gates tech web site it explains how to measure for this.
 
The early A/C Compressors required two belts since they put a heavy drag on v belt systems. Play close attention to belt width, making sure width of belt lays into the pulley and does not hang out above grooves. This will reduce chance of belt loss. I fyou got to gates tech web site it explains how to measure for this.
Will do. Thanks.
 
20160904_192800_zpsqqqtbywa.jpg

20160904_192735_zpswpiqdtki.jpg

20160904_192745_zpsrmlee1ya.jpg

These are on my 1974 440 pickup with ps and factory air. Double belts around crank, ac, and alternator. Single belt water pump, crank, and ps pump. No idle pulley like the above pic has
 
20160904_192800_zpsqqqtbywa.jpg

20160904_192735_zpswpiqdtki.jpg

20160904_192745_zpsrmlee1ya.jpg

These are on my 1974 440 pickup with ps and factory air. Double belts around crank, ac, and alternator. Single belt water pump, crank, and ps pump. No idle pulley like the above pic has
That's what I was thinking it might have been like - without the idler. Was the double groove pulley on the water pump also the way it was originally?
 
It has a double groove pulley on water pump but only 1 groove is being used. It's the pulley bracket set up that came on it. I just cleaned and painted everything, new belts hoses etc when I got it.
 
It has a double groove pulley on water pump but only 1 groove is being used. It's the pulley bracket set up that came on it. I just cleaned and painted everything, new belts hoses etc when I got it.
I've looked high and low on eBay and I've never seen an single groove alternator pulley that looks like it would work. Either double groove pulleys like yours must have been used, a deep pulley with a spacer used, or if single groove pulleys were used they are so rare that they never end up on eBay.

If I was a betting man I'd bet that 1972 was the last year Chrysler used idler pulleys on big blocks with AC and power steering. This is because of the info on my original post and because that's the cutoff year for the "alternator mounting kit" that places like Classic Industries sells that includes the idler pulley.
 
Magvan,
can you post a picture or two of the upper alt bracket and where it bolts to the water pump.
 
It looks like I'm getting closer. I was mounting my alternator on the inside of the top bracket which explains the issue I was having with the spacers. Once I get this figured out I'm going back to black brackets.

image1 (10).JPG IMG_3595.JPG IMG_3599.JPG IMG_3600.JPG
 
I gotta say magvans got the waterpump housing with the inlet on the passenger side. Think that might make a difference? Never seen one before myself. Interesting. Where are the timing marks?
 
Sounds like you've entered.....PULLEY HELL.

Seems like every year and every body style with and without a/c is different.

Brackets, pulleys, spacers, belts, water pump.....everything.

I keep all those spacers I can find.

I have a reasonably unmolested 1973 400-2 with a/c from a C body, but it will be tomorrow at the earliest before I can get any pics.
 
I bought all new pulleys and brackets from bouchelon. I removed the air conditioning from the car. I do have an aftermarket damper and water pump on the 72 400( now 451 ). Before removing, even with the new damper, everything lined up fine after I had to add 1/4 spacers to all the brackets and behind the water pump pulley for alignment. I didn't contact them, but I was quite frustrated thinking shouldn't this just bolt on.
 
I have the power steering bracket from bouchelon on mine too. I also had to space it to make the pulley line up
 
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