93PhoenixV8

I bought March Performance alternator pulley and a crank pulley and i was told my engine would blow within a month from the local shop when i was getting some welding done. so my question is it safe to install them if i still drive my car daily??

97lt1camaro

iTrader: (3)

Don't ever go to that shop again.

Install pullies, notice little to no difference, enjoy having more stuff to type in your sig.

Haha

JeaneZ28

iTrader: (3)

Call them up and ask them why. I would really like to know where they came up with that.

Noah's95z28

iTrader: (7)

Yeah me to! WTF???

madhatter

****, mine have been on this car since I bought it almost 3 years ago, and the last owner has had them on for a few years below that.

Like I have told many people here and on CZ28: Run man.

Bersaglieri

iTrader: (13)

ASP's are the only ones I would run. Otherwise that shop is retarded.

-Dustin-

99blancoSS

iTrader: (115)

ATI is what we use on our engines

StangeatinZ28

waste of money

96capricemgr

iTrader: (1)

Depends, did you put the stock damper back on OVER the useless underdrive pulleys??

The stock pulley serves as pulley and harmonic damper. A number of people put on the UD pulley and leave off the stocker when you are supposed to put the stocker on over it. If you left it off the shop is right that you are doing damage.

UD pullies are of little value on most LT1s because they can not slow our waterpump, on applications where they slow the waterpump they are a nice simple upgrade.

Pulling the belt entirely on an LT1 is worth about .1 at the track, so it stands to reason that a 34% UD pulley would only gain you .034 at the track, a street car will vary more than that pass to pass.

IMO don't bother with underdriving the accessoruies till you do a good damper and then get one that is undersized.