i have installed the alternator and crank pulley but i just want to run the belt by using the crank, tensioner and the alternator pulley. since the crank is smaller and the alt bigger i would like to know whats the correct size of belt i should buy??? hopefully this helps my new project (boost )

What alternator pulley are you running......AEM?

What crank pulley are you running....?

As long as you boost project doesn't evolve a supercharger.......Since your under driven crank pulley would spin the charger much to slow.......

Just guessing, I would start with a 345K5 belt, but It MAJORLY depends on your crank pulley.





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

well im running a crank pulley from ebay (Bomz 95 96 97 98 Cavalier 2.4L Underdrive Crank Pulley) and the alt pulley is AEM . im running turbo and 10psi of boost

With those two pullies working together you may have charging issues. Hope you dont have any amps or any other power robbing things n your car.

im having a lot of problems already, i have hids and everything elec. but this will help me out in power right??? or should i just leave it stock???? any belt size im eliminating the A/C

With an UNDER DRIVEN alternator pulley and an UNDER DRIVEN crank pulley, if your having problems now., you are really going to have problems with your electrical system with both of them.

Also bomz made a few different sized crank pulleys. It is impossible to tell you what size belt.

Stock everything I would still start with a 345K5 to eliminate the A/C. You might need a slightly longer belt though.....





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

well since the crank its smaller than normal and the alt bigger than normal i will try that belt 345k5 but slightly how much HP gain??? well the turbo will take care of that ]:->