Anyone use the Aem alternator pulley for the ld9 and know what size of belt to use with stock diameter crank pulley? I have a CarCustomGrillz pulley that I'm using with the Aem and trying to find the correct size. The carcustomgrillz is a lot smaller than the unorthodox and rk sport I believe.

98grandamld9 wrote:Anyone use the Aem alternator pulley for the ld9 and know what size of belt to use with stock diameter crank pulley?

Gates-K050500
Dayco-5050500
Goodyear-4050500



"Straight roads are for fast cars, turns are for fast drivers"-Colin McRae

Thank you! Anyone seen a CarCustomGrillz.com crank pulley for the LD9 I think they made 15 or something?

It is REALLY small. I haven't had my hands on one in years.




PRND321 Till I DIE
Old Motor: 160whp & 152ft/lbs, 1/4 Mile 15.4 @88.2
M45 + LD9 + 4T40-E, GO GO GO

I have the carcustomgrillz pulley that im trying with the Aem alternator pulley. Lol yeah its is REALLY small in diameter and weighing 11 ounces. With the setup and the ac delete pulley the serpentine belt is somewhere between 46 to 47 inches long im trying to find the right belt. Autozone and Oreilly only have a 45.5 and a 46.5 or 5/8ths so we'll see. 45.5 was to small. The belt size for the CustomCarGrillz pulley is 44.5 inches. Stock size alternator and crank is 47.5 and was to long, which a Unorthodox and RK Sport crank pulley with Aem alternator setup works.