Crank pulley

[seth98esT]

Your new pulley is ~ 1.08% smaller then the original. So you would need an overdrive pulley 1.08% larger then the OEM overdrive pulley. So if the original alty pulley is 5"(no clue, just using a number), you would need a 5.4" overdrive pulley to keep things close to stock.

Idk, this is just basic math, if Im wrong, shoot me

Slowboyracing carries different pulleys:
http://www.slowboyracing.com/shop.php?cat=1871&

[jiul]

Your new pulley is ~ 1.08% smaller then the original. So you would need an overdrive pulley 1.08% larger then the OEM overdrive pulley. So if the original alty pulley is 5"(no clue, just using a number), you would need a 5.4" overdrive pulley to keep things close to stock.

Idk, this is just basic math, if Im wrong, shoot me

Slowboyracing carries different pulleys:
http://www.slowboyracing.com/shop.php?cat=1871&

Great I appreciate the link.
The new underdrive pulley is actually 8% smaller than the other:
[.5/(6.25)]*100

So if a one to one replacement is need than I'll just need a pulley 8% bigger. So even thogh I have no idea how you got the right answer LOL, YOU DID !

If the alt pulley is 5" that would make it 5.4' and you get to that like this
[(5*.08)+5]= 5.4


I wonder if the replacement ration is 1:1 though.

[jiul]

.

So i am assuming you don't have a track ready Galant.


With my eyes closed, this thing's a beast !

[DOHCstunr]

honestly unles you are running a big system, its not going to make a difference.

the pulley will not effect the operation of your electrical systems, cept maybe if you are running a lot of stuff(fans, defrost, system, headlights.
all at idle.
during all other rpms' your alternator is going to crank out plenty of power.