Underdrive Pulleys - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

BLT4SPD · 07-26-2009, 09:32 AM

I'm asking the experts...DO or DON'T?

SoloSK71 · 07-26-2009, 10:04 AM

Do it. It is all about performance!

- SK

rodimus prime · 07-26-2009, 10:31 AM

Id hit them up as the last of the bolt ons.

Def go CAI/Headers/Exhaust/ Intake Manifold first. You can swap pullies and not need a tune because nothing really changes.

patriotpa · 07-26-2009, 10:34 AM

...just keep in mind that ALL of your accessories (Water pump, alternator,air conditioner, power steering) will be turning SLOWER, using less power, which is where the increase comes from.

BLT4SPD · 07-26-2009, 10:57 AM

Quote:

Originally Posted by patriotpa

...just keep in mind that ALL of your accessories (Water pump, alternator,air conditioner, power steering) will be turning SLOWER, using less power, which is where the increase comes from.

Already have ARH headers and exhaust and a tune waiting on Varraram CAI.I was concerned about turning the A/C and Alt. slower.All the driving is in town.

rodimus prime · 07-26-2009, 11:04 AM

It will be fine, unless you bought some aftermarket stereo amps and subs and went crazy.

2010-1SS-IBM · 07-26-2009, 11:21 AM

Quote:

Originally Posted by rodimus prime

Id hit them up as the last of the bolt ons.

Def go CAI/Headers/Exhaust/ Intake Manifold first. You can swap pullies and not need a tune because nothing really changes.

Question: I'm hearing the stock air intake is already pretty good. Why would you put that among the first things to do, rather than one of the last?

rodimus prime · 07-26-2009, 12:43 PM

Quote:

Originally Posted by 2010-1SS-IBM

Question: I'm hearing the stock air intake is already pretty good. Why would you put that among the first things to do, rather than one of the last?

Because its not very good. The baffles are huge restrictions alone. When every vendor is claiming about 20hp off all the styles, it tells you the stock version is not good. BTW I looked at my car and the crank pulley looks like it will be a pita to pull off and install....especially compared to a CAI.

Bentley78 · 08-14-2009, 08:11 PM

So if i install an aftermarket underdrive pulley, it will take power away from alt, ac, power steering??? I dont get it.

*CamaroSpike23* · 08-14-2009, 08:29 PM

Quote:

Originally Posted by Bentley78

So if i install an aftermarket underdrive pulley, it will take power away from alt, ac, power steering??? I dont get it.

sort of. when you put an underdrive pulley on the crank, you need to put an overdrive pulley on the alt at the very least to ensure that you are keeping it spinning properly to power the battery.

toehead93 · 08-16-2009, 08:27 AM

I'll probably do it with a cam change, does anyone have dyno results for a pulley swap?

themossman · 08-16-2009, 09:51 AM

I've got 25% pulleys and I don't notice any difference in the performance of the AC...and I live in Florida.

As far as the performance increase...I can't speak to it individually as all my current upgrades were done at the same time.

07-26-2009, 09:32 AM	#1
BLT4SPD Drives: 2010 SS, 2011 Z71, 1980 Camaro Join Date: Mar 2009 Location: Baton Rouge, LA Posts: 139 View My Garage	Underdrive Pulleys I'm asking the experts...DO or DON'T?

08-16-2009, 08:27 AM	#11
toehead93 Drives: 2014 2SS/1LE Join Date: Feb 2007 Location: wpb fl Posts: 3,136 View My Garage	I'll probably do it with a cam change, does anyone have dyno results for a pulley swap? __________________ Used Racing Brake 2 Peice Rotors for sale: http://www.camaro5.com/forums/showthread.php?t=344754 Summit White 2014 2SS 1LE Recaros, NPP exhaust, Nav 2010 2SS A6 - sold.

08-16-2009, 09:51 AM	#12
themossman Apprehensive Optimist Drives: '10 SS/RS SIM Join Date: Sep 2008 Location: JAX Posts: 1,383	I've got 25% pulleys and I don't notice any difference in the performance of the AC...and I live in Florida. As far as the performance increase...I can't speak to it individually as all my current upgrades were done at the same time. __________________ Car is for sale --->http://www.camaro5.com/forums/showthread.php?t=158486 Current Summary: Engine:Phase One-(All work by Vengeance Racing): Custom Cam, AR Headers, ported throttle body, ported intake, custom tune, dual valve springs, hardened push rods, under drive pulley, thermostat, Vararam CAI, C5R timing chain, Melling oil pump catch can, breather, MagnaFlow Sport Axle Back Suspension: Pfadt Sport Sway Bars, Pfadt drop springs Other: MGW Shifter, Custom Paint my build journal ---->http://camaro5.com/forums/showthread.php?t=30057

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07-26-2009, 10:31 AM	#3
rodimus prime Account Suspended Drives: Cargo van. Join Date: Jul 2009 Location: Metal Metal Land Posts: 1,247	Id hit them up as the last of the bolt ons. Def go CAI/Headers/Exhaust/ Intake Manifold first. You can swap pullies and not need a tune because nothing really changes.

07-26-2009, 10:34 AM	#4
patriotpa Account Suspended Drives: 02 Silverado, 09 Vue, 10 1SS Join Date: Aug 2008 Location: Tired of apologizing when we should be kickin' butt! Posts: 1,966 View My Garage	...just keep in mind that ALL of your accessories (Water pump, alternator,air conditioner, power steering) will be turning SLOWER, using less power, which is where the increase comes from.

07-26-2009, 11:04 AM	#6
rodimus prime Account Suspended Drives: Cargo van. Join Date: Jul 2009 Location: Metal Metal Land Posts: 1,247	It will be fine, unless you bought some aftermarket stereo amps and subs and went crazy.

08-14-2009, 08:11 PM	#9
Bentley78 Rice Cooker Drives: Avalanche Z/71, 2010 Camaro2SS Join Date: Jun 2008 Location: Hawaii/Phoenix Posts: 591	So if i install an aftermarket underdrive pulley, it will take power away from alt, ac, power steering??? I dont get it.