Underdrive C5 Pulley
Thread Starter
Pro
Joined: Apr 2004
Posts: 719
Likes: 21
From: Miami Fl
Underdrive C5 Pulley
Guys,
My harmonic balancer is causing major vibration at 3000-4000 rpm looking to replace it with an underdrive pulley. Has anyone done this to the C5? And where can I get this underdrive pulley for a reasonable price?
My harmonic balancer is causing major vibration at 3000-4000 rpm looking to replace it with an underdrive pulley. Has anyone done this to the C5? And where can I get this underdrive pulley for a reasonable price?
Safety Car
Joined: Aug 2000
Posts: 4,537
Likes: 84
From: St. Joseph MO
Cruise-In III Veteran
Cruise-In IV Veteran
Bought my crank under drive pulley 2 years ago from Texas Speed, then bought an alternator overdrive pulley from TByrne Motorsports for like $20-30
Melting Slicks
Joined: Aug 1999
Posts: 3,452
Likes: 3
From: Spring, TX
You can get the pulley from most vendors. Either ASP or ATI both make em. The ASP should be a little cheaper. They cost $200+. Basicaly you have to all the hard work you need to do a cam job so you might as well look into that. I broke my pulley and I when ahead and did a cam swap, oil pump, and beefier timing chain.
look at LS1howto.com and look at the heads and cam swap instructions that is what you will need to do and you will understand why I say you might as well switch the cam. Also a overdrive pulley for the altenator is not required unless you have a huge sound system.
look at LS1howto.com and look at the heads and cam swap instructions that is what you will need to do and you will understand why I say you might as well switch the cam. Also a overdrive pulley for the altenator is not required unless you have a huge sound system.
