is there a position other than the lower passenger side?

 

I have mine on the upper passenger side on a homemade mount, I have a 3g 130 amp alternator and the belt slips pretty bad when under load because when its mounted high like that the belt goes around the water pump also, causing a small contact patch on the alt pully.

 

I run a l@l kit large body on my truck and got rid of the factory set up. Went one wire on alternator. My winch requirements are to much for oem stuff. Tried the upper system and like straight six said pully contact is to small. You'd have to have idler pully in oem position and run a small belt up to alternator in upper system off of idler up to alternator. I don't think it would be worth the trouble. Robby gordon on his ford race trucks ran a belt over to pully and had a shaft that ran a direct drive to alternator mounted on passenger side on frame system. It was crazy back in the day and it survived baja 1000 in his 800hrspwr ford. cool stuff. Thinking outside the box type of situation!! Thats why he makes the big bucks I guess. I believe it was a class 8 truck back then. What problems are you having?????

 

the engine is in my boat. its a 79' engine and i want to run 2 alternators. i was wanting to mount one in two places.

 

So the L and L mounts in the stock location? sorry to highjack....

I think you could probably run one alt in the stock position and one where mine is, but like mentioned you need and idler to make more pully contact.

 

I mounted the pivot point of my alternator to one of the upper head bosses, and flattened out the alternator swing bracket off of a Lincoln 460 to make it work. For some reason, I do not have pictures of the engine with everything installed.

 

This is how I made mine so it only rides on the crank pulley. It's part of the old 400 brackets. In a "77.5-'79f-250 4x4 the front crossmember is a big problem to get around too.

 

I found a setup off of an 86 F-250 with a 460, it has dual V-belt pulleys for the water pump and crank. It mounts the alt. right about in front of the pass. cyl. head(no more laying underneath to tension the belt), and has the bracketry for an air conditioner pump, and air pump, -which could be fabbed for a second alternator. (and power steering of course)
Some brainiac removed the fan with a sawzall-and messed up the pulley. One day I will use this setup.

Currently I have passenger car brackets and pulleys, which works-although!!! You pretty much need to remove the fan and the waterpump pulley(or crank pulley) Them two pulleys are so close, you cannot get a new alternator belt in, without pulley removal=not fun.

So, search some wrecking yards-if they allow it, and or fab. something.