24v Delco alternator price check

[Smokinyoda]

For those that have converted to the Delco 24 volt 1 wire alternators what were the best prices you found?

So far the 2 best deals I have found are:
100% NEW Delco 21si 24 Volt 70 Amp Alternator $123/shipped

NEW Alternator 10SI Delco 1 Wire Hookup 70 AMP 24 Volt $122/shipped



The 10si includes pulley and fan, the 21si just includes fan. I plan to use original duece pulley after boring out to size.

And yes I realize I will have fabricate a mount, because while these are close they are not an exact "Drop In" replacement.

What would be the better of the 2, or do you know of an even better deal?

 

[gimpyrobb]

Second link doesn't work for me. I got a 100amp one that looks like the one in the first link, for ALOT more. I'd go with that one.

 

[Smokinyoda]

Sorry 2nd link is a current eBay auction. Didnt want to break any more rules by posting it.

I guess it just boils down to which is better/reliable, the 10si or the 21si.

 

[gimpyrobb]

If they have the same output, whichever is heavier.

 

[Hammer]

I didn't know the 10SI went up to 70 amps.
Gimp has it though, simply basing it on weight is actually a real simple way to go about it.
Btw, I think the 21SI is a more stout unit.

 

[gimpyrobb]

Its numerically higher, it HAS to be better!

 

[Hammer]

Nice reasoning!

The 21SI has a rear mounting tab, and a more robust case.
I found the ebay add for the 70 amp 10SI.
I personally would go with the 21SI.

 

[Smokinyoda]

Thanks, got the 21si for $115 shipped!

Now I will soon be able to take her out after dark!!!

 

[joedent]

does anyone know where i can get a new alternator pulley for my duece. thanks Joe