Alternator

[DLMc]

My 74 being a low mileage car has the original alternator on it. I installed some Edelbrock heads on it and was able to modify the brackets so it would fit. It works fine but wanted to upgrade to a one wire. The problem I am running into is the new alternators housings are deeper in depth by over 1/8". I looked at the remans and they are also wider. These won't fit my application with the Edelbrock heads like the original one does.

 

[493 Mike]

Car-engine? Photo?
Mike

 

[Don Frelier]

Why not just use the original alternator?

 

[DLMc]

Why not just use the original alternator?

Because it's over 50 years old and just wanted to have one on hand.

 

[Don Frelier]

Because it's over 50 years old and just wanted to have one on hand.

Okay,

Is it a square back? Like this:

 

[RJRENTON]

Because it's over 50 years old and just wanted to have one on hand.

The old adage applies: why fix it if it's not broken........like vintage wine.....age enhances...especially original alternators.....
BOB RENTON

 

[dadsbee]

I'll agree with you this round Bob, my "youngest" is now 55.5 years old, oldest 61 !

 

[Some Car Guy]

We have a board member that rebuilds them and has cores. You could swap in a factory type one with ease for peace of mind and save this one as a known good spare. There are kits to up the amps if you need more juice than stock.

 

[70bigblockdodge]

I have run into this problem with a swap meet alternator, the back does not clear by the bearing.

 

[RJRENTON]

I have run into this problem with a swap meet alternator, the back does not clear by the bearing.

The secret, when attending swap meets, IS TO KNOW THE PART NUMBERS (or physical dimensions) of the components that you are seeking. DO NOT RELY ON THE VENDOR.....he say it'll fit (to make the sale), but offers no guarantee.....the old adage applies: The Latin phrase for "let the buyer beware" is caveat emptor......case in point.....alternator case configurations....old round back style vs new square back style. Just my opinion........
BOB RENTON

 

[DLMc]

The old adage applies: why fix it if it's not broken........like vintage wine.....age enhances...especially original alternators.....
BOB RENTON

I agree but I plan to do the power tour and wanted one on hand if this one was to give out.

 

[RJRENTON]

I agree but I plan to do the power tour and wanted one on hand if this one was to give out.

It won't be the alternator that fails...it will be something in the ignition system....ECU, MSD, COIL OR BALLAST RESISTOR......
BOB RENTON

 

[Some Car Guy]

cudaize is the one that does the rebuilds. He is sending me a date coded one right now. I was happy with the pics he sent of mine. He’s been selling on here for awhile.

 

[RJRENTON]

cudaize is the one that does the rebuilds. He is sending me a date coded one right now. I was happy with the pics he sent of mine. He’s been selling on here for awhile.

I rebuild my own alternators and starters, using NOS MOPAR PARTS, which I've sourced at swap meets, etc. Easy to upgrade alternator capacity but changing the stator coils plus diodes and still look like origional unit....no big deal....or mystery.......
BOB RENTON

 

[70bigblockdodge]

The secret, when attending swap meets, IS TO KNOW THE PART NUMBERS (or physical dimensions) of the components that you are seeking. DO NOT RELY ON THE VENDOR.....he say it'll fit (to make the sale), but offers no guarantee.....the old adage applies: The Latin phrase for "let the buyer beware" is caveat emptor......case in point.....alternator case configurations....old round back style vs new square back style. Just my opinion........
BOB RENTON

Part number and vendor with a clue? Your way above my price range in alternators. Looks like a Chrysler alternator, square or round, how many field wires. Sold.
Buy them very cheap, test them, good or parts piles.

 

[RJRENTON]

Part number and vendor with a clue? Your way above my price range in alternators. Looks like a Chrysler alternator, square or round, how many field wires. Sold.
Buy them very cheap, test them, good or parts piles.

Then you don't purchase from someone that doesn’t know his *** from a hole in th ground...by knowing the part nimbers/applications you know exactly what you're getting....I've been to enough parts swap outings, and I know EXACTLY what I'm buying and what I want.....if you don't...then when the part/item doesn't fit, who do you blame....the vendor? I go prepared especially with part/assembly numbers....
BOB RENTON

 

[Nacho-RT74]

My 74 being a low mileage car has the original alternator on it. I installed some Edelbrock heads on it and was able to modify the brackets so it would fit. It works fine but wanted to upgrade to a one wire. The problem I am running into is the new alternators housings are deeper in depth by over 1/8". I looked at the remans and they are also wider. These won't fit my application with the Edelbrock heads like the original one does.

I guess you are looking at the later squareback (revised) version, which is as you noticed wider. Those are the ones PowerMaster and Mopar Performance offers. Using that one makes to demand a small trimming on rear spacer and longer belt to sway away the alt from the block, but longer belt also makes to slaps the belt more. The slapping makes also to damage the upper radiator hose on BBs at least with A/C

(Don’t ask how I know everything of this)

The best bet is try to get of course the closer on specs than the one you have at this moment.

Go to Tuff Stuff and find the one you want on stock casing (based on the first squareback alt version which is the one you have)

Chrysler alternators

They have 60 amps, 100 amps, 130 amps… cast finish, chromed, black finish. Stock dual field, one wire…

If A/C, they have single and dual groove setup made with the small pulley (later) version, able to hold better the load supplied at low RPMs

Aside this and noticing you are proceeding with some other upgrades (per the rest of your threads) I would suggest upgrade to 100 amps alt which are able to hold better the power at low RPMs, very critical to sensitive ignition systems… but that’s my opinion. Couple of upgrades on alt/amm paths and voilá

MAYBE this is the one you could get, which is the same I got couple of months ago, not in hands yet but at a friend’s home. Waiting to be overseas shipped yet maybe at the end of the year.

But I will remove the attached regulator and will change the brush to get back the field prong for the dual field setup. I don’t care the one wire setup. Just got it for the price. (Was on the hunt for years untill find it affordable to me). Description said mounted but never used.