Pulley alignment on a 400? {Pics}

[TruckDriver]

Well, work got rained out again today, so I decided to work on the car again. I finally got my everything together except power steering hoses, heater hoses, fan belts, main wiring harness, and mounting the carb. But when I was trying to put on the fan belts, they do not line up right. You can see in the pics. The crank pulley seems to be out about 3/16ths or so, and the alternator is way off. I can mount a belt for the alternator, but it rests behind the pulley for the water pump. I did get the power steering belt on the car, but is the correct tightness already and the pump is adjusted all the way down towards the crank pulley. My car did have factory air conditioning, so do I really need a compresser to make it right? Is there a spacer missing somewhere? I am confused now.

[71440charger]

i was having that problem with my 440 you need a deeper water pump pully that was my fix just a thought

[RD]

pete, you can make it work.  On the alternator, just use a pulley puller and pull that alternator pulley out a tad to where you need it so that it will align up with the crankshaft pulley.  I have done this and it worked fine.

If your power steering pulley is not lining up with your crankshaft pulley, you can do the same as above, or redneck that puppy and just bend the brackets a tad .

Since you removed the a/c compressor, the alternator belts will be different lengths.  You will have to measure the distance from the alternator pulley to the crank pulley by using either wire or twine and actually wrapping it around the pulley's to determine the size of belt you will need.  Measure the wire/twine and take that length into your parts store.  I would recommend measuring your distance at midway on the alternator bracket adjustment.

the key issue is you are having the routing of the belts done opposite to what the factory intended.  It can be done, I have done this when I put the 400 in the ramcharger, so it will work.  I was able to find p/s & non a/c pulley's later on and did it right.

Just adjust the pulley's on their respective shafts and you will be fine.  not correct, but fine (who cares about correct anyway? )

oh yeah, the alternator belt will only be able to fit on the outside groove of the alt. pulley due to w/p clearance issues.  check on that.

[twilt]

Pete, i have some B/B non a/c pulleys that i scavenged off a early 70`s junkyard truck. If you wanna try em, let me know. As luck would have it......I even know where they are.

[deputycrawford]

Twilt is right. I removed my A/C and called Manciniracig.com They had the correct set of non A/C pulleys. It was worth it to get a new set of "STRAIGHT" pulleys that I olny had to work with once. They even have the Crinkle type finish that is bullet proof and the low gloss black that doesn't change its looks when dirty. Moving pulleys does work; in a pinch, but don't start moving pulleys if you don't have to. Just my experience.

[Nacho-RT74]

Compairing with stock parts and belts setup.
number one... with A/C compressor removed non A/C setup uses a different Alt upper bracket. The NON A/C setup alt bracket attachs on different bolts IN FRONT the water sensor sender unit and heater nipple outer. These brackest have a big hole in the middle to get acces to sender.

About pulleys... crank and fan are different. Crank one use 3 grooves and fan is a deeper one. You don't really need to change the upper alt bracket but for stock appereance I would go for it. In this case the alt "ear" is bolted behind the bracket instead in front of.. Same about alt pulley. You can use the two grooves one, but I would go for the one groove pulley to get it more exact on aligment. BUT HOWEVER I THINK THERE IS SOMETHING WRONG ON ALT PULLEY... it looks is not the right one, not even to A/C set up. Rear groove looks to be too close to alt housing AND I can't see the pulley end to fit the extractor. I can be wrong but notice something weird there I don't know what is exactly.

number two... IF YOU KEEP THE A/C... It looks that you have an engine with an earlier water pump housing with inlet located on driver side. With this set up stering pump sits higher than laters with water pump housing inlet on passenger side to get room to belt. On this set up fan uses an iddler to get tension since fan uses a ONE BELT and steering pump uses ANOTHER different belt. Since fan belt is not adjustable than that's the purpouse of iddler. Do you remmeber a diagram I send to you ( made by me ) with fan belt chart...  that's to engines with laters water pump housing. I thought that was your setup.

THIS PIS EVEN IS FROM A HARDLY RUSTED ENGINE, IS THE BEST FRONTAL VIEW ABOUT WHERE IS LOCATED THE IDDLER AND THE REST OF PARTS:


And here is a fan belt chart to any set up you need from 70/71 catalog with that kind of water pump housing:



On this diagram it looks Non A/C set up it looks to be the same to both kind of water pump housings