ls1owner4life

iTrader: (17)

I installed a 1000 Watt RMS JL Mono class D with two 12's in my 02 M6 Camaro. The voltage gauge stays over 13 volts with A/C on, headlights on (no dimming) and stereo blasting. I don’t know if this has any influence but the amp gain is only at 50%. Since I will be replacing the belts I want to install an under drive pulley. From searches I read that if you have an aftermarket stereo the UD pulley is not recommended. My question is around how many watts total will one experience problems and does the gain level or efficiency of an amplifier accommodate the addition of an UD pulley?

bayer-z28

iTrader: (14)

^ I'm wondering if they still sell the Alt overdrive pullies to compensate.

pentavolvo

do the big 3 and i wouldnt worry about it too much

ls1owner4life

iTrader: (17)

Any info if I need to remove the fans or radiator to get the pulley in?

ls1owner4life

iTrader: (17)

Bump!

RADEoN

iTrader: (12)

I've never done a UD pulley, but I have put smaller pulleys on alternators. That's what I'd do with a ud pulley.

ls1owner4life

iTrader: (17)

What size belts would you use with the UD and higher output alt pulley?

Adam1982

iTrader: (6)

had an 02 z28 with a 25% UD pully and 2 12 kicker L5s with a kicker zx1500 and i had no issues with voltage and i had not done the Big 3.

In my firebird, I had 2 type r 10s and 2 alpine pdx 1.600's with a 25% UD pulley 1.5farad cap and no Big 3 and had all kinds of voltage issues.

Dont know if its because i had 2 amps and it was just way less effecient even tho the power output was comparable to the kicker setup.