I'm helping a good friend who's trying to get his 75 put back together after an engine swap. He removed a 302 and put another 302 in and we can't seem to get the pulleys lined up. The smog pump is back towards the firewall about 1/8" too far along with the alternator, and he honestly can't remember how the belts are supposed to be configured either. I didn't install the crank pulley but it seems to be all the way on and the center bolt is tight.

This is a 75 Mustang II with power steering, smog pump and A/C. Can anyone point me to a picture or diagram showing the belts installed?

Is it possible the bracket holding the alternator and smog pump needs to be shimmed out to get proper alignment? Sounds hokey but I don't see any way to get these things further forward.

He did install a new water pump, I wonder if there are some versions slightly different than one another that would cause this slight misalignment.

Thank you,

Bill

 

You might want to try the Mustang II forum.

 

You want to make sure that you have all matching pulleys and brackets. Either pre-69 or post-69. If you try to mix and match them you're going to play hell getting things to line up.

 

Ok will do. Thanks

 

Thanks. They're supposed to be all original but who knows, given the missalignment that might be the case. Seems to be off just slightly, there was a shim under the water pump pulley I removed and the alternator belt almost clears the pulley now.

 

Are you familiar with how to decode FoMoCo part #'s?

Just a quickie in case you didn't know.

Parts made in the 60's will begin the letter 'C' on the part number, ie. C80Exxxxx would indicate a model year of 1968 for that part and parts made after 1969 will have a 70's part# something like D0OExxxx for 1970 model.

If I remember right all of the pieces are stamped so telling if you have a match set isn't too tough.

It can be tough to read the part number on the installed crank pulley but you can tell the difference by the number of bolts. 3 bolts are pre-69 and 4 bolts are 70 and up. You really want to get a matched setup.

fwiw parts made in the 50's begin with a 'B' and 80's begin with 'E'

 

Excellent information, I didn't know. I'm going to pull the alternator this week when I go to my friends place so I'll check the bracket numbers. Thanks for all the details!

 

I checked all the brackets and according to the code they are correct for the car. Couldn't see the crank pulley no's but it had 4 bolts so it agrees.

This is the strangest setup: the smog pump and alternator are too far back to align with the crank but the water pump pulley is too far forward, about half a pulley width. I do see he's installed an aftermarket alum waterpump, he got it from NAPA, most likely an Edelbrock so I've asked him for receipt.

NAPA only sells one length for this car at 5.70 but it's impossible to get a good measurement on the thing while in the car. I wonder if the pump housing could be the cause of all this since all the brackets mount to the pump. If the front face of the pump impeller were pressed on more, the pulley would align with the crank. Here's a pic. I wish he would have installed an OEM pump, I can see me taking this pump off to measure it.