L99 underdrive install - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

huitt06 · 12-12-2013, 07:22 AM

Should be in today, any tips or advice on install?

Spartan01 · 12-12-2013, 07:33 AM

Ok,
removal is easy. install requires a special tool AND NEW crank bolt.
The install tool is basically a length of threaded rod with washers that helps push the pulley into place. I went to 3 places before I ended up at a dealers- they were the only place that had this tool.

Use the OLD crank pulley to properly position/space the UD Pulley, then remove and install+torque the new crank pulley.

BE CAREFUL during install, Pulley sits directly in front of the AC compressor. The dealer broke the compressor and had to replace it during my install, so damage to the AC unit can occur,
Good luck, let us know how it turns out

OH, and make sure the belts all fit BEFORE removal of old belts- found this out the hard way.

jvoisel · 12-12-2013, 07:50 AM

Quote:

Originally Posted by Spartan01

Ok,
removal is easy. install requires a special tool AND NEW crank bolt.
The install tool is basically a length of threaded rod with washers that helps push the pulley into place. I went to 3 places beofre I ended up at a dealers- they were the only place that had this tool.

Use the OLD crank pulley to properly position/space the UD Pulley, then remove and install+torque the new crank pulley.

BE CAREFUL during install, Pulley sits directly in front of the AC compressor. The dealer broke the compressor and had to replace it during my install, so damage to the AC unit can occur,
Good luck, let us know how it turns out

OH, and make sure the belts all fit BEFORE removal of old belts- found this out the hard way.

Looks like you mixed a few words up in there lol.

Take belts off, remove crank bolt, drop a large extension inside crank so you dont damage threads.. I use a 3 jaw puller, put the tip in end of the extension and remove pulley. A balancer install tool is the best way to get the new one back on. Once you have it on and can thread the OLD bolt back in a good ways, torque it down to seat pulley. Remove old bolt and install new, torque to spec.

Here's the tool I use..
https://sdparts.com/details/scoggin-...-center/sd6628
Easy to make your own, or some people put a block of wood on the pulley and hit it dead center to get it started.. DO NOT use the stock bolt to get the pulley started. Goodluck!

jvoisel · 12-12-2013, 07:55 AM

Quote:

Originally Posted by Spartan01

Dude, who are you? The F-Ing grammar police?

Calm down buddy.

tanur420 · 12-12-2013, 07:59 AM

I went to fastenal and got a peice of allthread some washers and nuts and made my own install tool for about 20$

LSX Camaro · 12-12-2013, 10:21 AM

These are the correct removal and installation tools. Do not use a crank bolt to install the pulley. Chances are you will pull out all the threads in the crank.

litle88 · 12-12-2013, 10:24 AM

NO POWER tools

huitt06 · 12-25-2013, 08:30 AM

Bit late but thanks guys ...got her on and enjoying it.

Sent from my iPhone using Tapatalk

chozn4service · 12-25-2013, 08:41 AM

What does this do? Just got L99 4 months ago... Thnx!

huitt06 · 12-25-2013, 09:14 AM

slight power increase and better response...not bad install with right tools...i would suggest headers and tune first tho...L99 tuned is a different car

chozn4service · 12-25-2013, 09:18 AM

Quote:

Originally Posted by huitt06

slight power increase and better response...not bad install with right tools...i would suggest headers and tune first tho...L99 tuned is a different car

Thanks for the info! Yea I was going to put some Solo HFC on it so I wouldn't have to tune but since my warranty is out next year, I'm going to forego the cats and do headers, either Pfadt or Kooks and have it tuned. I guess I'll probably have them do the U/P at the same time.
Thanks for the info!

MARINE1991 · 12-25-2013, 09:48 AM

Quote:

Originally Posted by jvoisel

Calm down buddy.

Lol

LeanPocket · 12-28-2013, 12:51 PM

I used an impact to remove and install the crank bolt.

removed the electric fans
Removed crank bolt with impact
Used pulley remover tool
Put new pulley on and used a wood plank to tap it in
Impacted new bolt in

Use a knife to cut the ac belt.. Much easier
And have a friend help blip the belt onto the new pulley.

JCunningham · 12-29-2013, 12:57 AM

dont tap on your pully. would you tap on your thrust bearings in your motor with a hammer? thats what your doing when you tap on your crank

12-12-2013, 07:22 AM	#1
huitt06 Drives: 2011 L99 SS Join Date: Mar 2012 Location: West texas Posts: 319 View My Garage	L99 underdrive install Should be in today, any tips or advice on install? __________________ TSP 1 7/8, CNT catback, VMAX, CAI intake, ADM scoop, 3.70s, Adm Tuned(374/391), SLP UDP, 18" nurbs/NT05r's , 3200 stall, Granatelli trailing arms....1/4 mi best 12.7

12-12-2013, 07:33 AM	#2
Spartan01 Drives: Evil Eva, 2010 2SS LS3 Join Date: Aug 2013 Location: Falls Church, Virginia Posts: 3,600	Ok, removal is easy. install requires a special tool AND NEW crank bolt. The install tool is basically a length of threaded rod with washers that helps push the pulley into place. I went to 3 places before I ended up at a dealers- they were the only place that had this tool. Use the OLD crank pulley to properly position/space the UD Pulley, then remove and install+torque the new crank pulley. BE CAREFUL during install, Pulley sits directly in front of the AC compressor. The dealer broke the compressor and had to replace it during my install, so damage to the AC unit can occur, Good luck, let us know how it turns out OH, and make sure the belts all fit BEFORE removal of old belts- found this out the hard way. __________________ "You simply cannot trust quotes found on the internet." -Abraham Lincoln Last edited by Spartan01; 12-12-2013 at 07:53 AM.

12-12-2013, 07:59 AM	#5
tanur420 Drives: 2011 Camaro SS Join Date: Apr 2012 Location: Jacksonville FL Posts: 348	I went to fastenal and got a peice of allthread some washers and nuts and made my own install tool for about 20$ __________________

12-12-2013, 10:21 AM	#6
LSX Camaro Master ASE, GM, LSX Tech. Drives: 2010 Camaro SS Join Date: Oct 2012 Location: Austin, TX Posts: 1,034	These are the correct removal and installation tools. Do not use a crank bolt to install the pulley. Chances are you will pull out all the threads in the crank. __________________ 2010 2SSRS A6, Custom Pat G. Cam, WCCH Cylinder Heads, Kooks Headers/Exhaust, BTR Valvetrain, Fluidampr 25% UDP, All Engine ARP bolts, Flex-a-lite radiator/Trans cooler, Yank converter, PFADT Suspension, ADM Race Intake/Scoop, Torq tow hook, CFD auto shifter, Dynojet AFR gauge, Aeroforce scan gauge, Brake Performance rotors/pads Prothane bushings, ZL1 wheels, spoiler, Z/28 wickerbill, 1LE Aero/Suspension Package, Anderson Composites COPO Carbon Fiber Hood, LED lighting, Elite Catch Can, Improved Racing oil pan baffle, crank scraper, windage tray 480 RWHP 452 RWTQ + Nitrous Express 150 Shot

12-12-2013, 10:24 AM	#7
litle88 V8 Lounge member #2 Drives: 2001 Ws6 Join Date: Sep 2009 Location: Burbank,IL Posts: 6,373	NO POWER tools __________________ 2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.

12-25-2013, 08:30 AM	#8
huitt06 Drives: 2011 L99 SS Join Date: Mar 2012 Location: West texas Posts: 319 View My Garage	Bit late but thanks guys ...got her on and enjoying it. Sent from my iPhone using Tapatalk __________________ TSP 1 7/8, CNT catback, VMAX, CAI intake, ADM scoop, 3.70s, Adm Tuned(374/391), SLP UDP, 18" nurbs/NT05r's , 3200 stall, Granatelli trailing arms....1/4 mi best 12.7

12-25-2013, 08:41 AM	#9
chozn4service Drives: 2016 SS w/2SS A8 Blue Velvet Join Date: Dec 2009 Location: 39.793153,-86.238223 Posts: 3,678 View My Garage	What does this do? Just got L99 4 months ago... Thnx! __________________ Never grow up, it's a trap!

12-25-2013, 09:14 AM	#10
huitt06 Drives: 2011 L99 SS Join Date: Mar 2012 Location: West texas Posts: 319 View My Garage	slight power increase and better response...not bad install with right tools...i would suggest headers and tune first tho...L99 tuned is a different car __________________ TSP 1 7/8, CNT catback, VMAX, CAI intake, ADM scoop, 3.70s, Adm Tuned(374/391), SLP UDP, 18" nurbs/NT05r's , 3200 stall, Granatelli trailing arms....1/4 mi best 12.7

12-28-2013, 12:51 PM	#13
LeanPocket Drives: 2010 2SS Join Date: Jan 2013 Location: Corpus Christi TX Posts: 634	I used an impact to remove and install the crank bolt. removed the electric fans Removed crank bolt with impact Used pulley remover tool Put new pulley on and used a wood plank to tap it in Impacted new bolt in Use a knife to cut the ac belt.. Much easier And have a friend help blip the belt onto the new pulley. __________________ Build Thread

12-29-2013, 12:57 AM	#14
JCunningham Drives: 2017 2SS M6 Join Date: Jun 2013 Location: WNY Posts: 7,070	dont tap on your pully. would you tap on your thrust bearings in your motor with a hammer? thats what your doing when you tap on your crank __________________ real ZL1 wheels and brakes, 285/305 Michelin Pilot Super Sports, Pray ported Intake manifold, Soler Throttle Body, Rotofab intake, EFI Tuning Flex fuel kit, full American Racing Headers Exhaust, 1 7/8" w/ cats H pipe and mufflers. Full 1LE suspension, with BMR adjustable sway bars and links, GM aluminum cradle bushings, Hurst shifter with lighter reverse spring, TWM shifter knob, Tick level 1 transmission. I should have bought a ZL1