10% Pulley Results - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

jlpearl · 11-20-2015, 10:58 AM

Hi All, in mid October I installed the IW 8.6" overdrive lower pulley. I made dyno pulls before and after the installation... verified coolant, intake temp, and intake temp 2 were all at the same level for the pulls. It certainly made good gains. The air-fuel starts to pull lean at the top-end because the injectors can't keep up.

p.s. Don't mind the 13psi boost number, there is a small spike when I tapped the rev limiter.

bigpierce90 · 11-22-2015, 07:51 PM

Did you have to get it tuned and where did you get your 5% pulley from? I would like to do the same upgrade.

nighttowl · 11-22-2015, 10:24 PM

how are you getting 12 lbs from a 5% pulley?
Do you have an upper pulley on it?

vicnkathy · 11-23-2015, 05:42 AM

Something not right here lol

jlpearl · 11-25-2015, 09:53 PM

Great catch guys. I just checked the invoice and it is a 8.6" pulley. I was originally planning for an 8.1" which is 5%, but ended up with this one and never cleared it up in my brain. I adjusted the content of the above post accordingly. Sorry for the confusion!!

Regarding the tune, this is something I do myself with HP Tuners at our dyno shop in NH.

nighttowl · 11-27-2015, 12:38 AM

You should change the title to 10%.

Ksacamaro · 11-27-2015, 02:09 AM

8.66 is 10% not 5%

15ZL1 · 11-27-2015, 07:11 PM

A6 or M6?

jlpearl · 11-28-2015, 07:08 AM

This is an M6

C Murda · 12-10-2015, 02:58 PM

what else do you have for mods? or is it just this pulley and tune?

jlpearl · 12-10-2015, 06:31 PM

I have a Roto-Fab intake too, which was already installed for the baseline

11-20-2015, 10:58 AM	#1
jlpearl Performance-Dyno.com Drives: 2013 Camaro ZL1 Join Date: Mar 2010 Location: Loudon, NH Posts: 57	10% Pulley Results Hi All, in mid October I installed the IW 8.6" overdrive lower pulley. I made dyno pulls before and after the installation... verified coolant, intake temp, and intake temp 2 were all at the same level for the pulls. It certainly made good gains. The air-fuel starts to pull lean at the top-end because the injectors can't keep up. p.s. Don't mind the 13psi boost number, there is a small spike when I tapped the rev limiter. Attached Images __________________ 2013 Camaro ZL1 - 10% pulley, roto-fab, tune 575 rwhp street temps, 604rwhp glory pull tuned by me at Performance-Dyno.com Last edited by jlpearl; 11-27-2015 at 05:24 PM. Reason: NOTE: This is an 8.6" pulley which is ~10% not 5%!!

11-22-2015, 10:24 PM	#3
nighttowl Sarcasm loading -------- Drives: 2018 ZL1 1LE Join Date: Dec 2011 Location: TX Posts: 1,806 View My Garage	how are you getting 12 lbs from a 5% pulley? Do you have an upper pulley on it? __________________ "The salesman actually told me to stop getting it sideways during the test drive" 2018 MBM ZL1 1LE - Stock 2014 CRT ZL1 574 rwhp, 537 rwtq - SOLD 2010 IBM SS Camaro VVT L99 w/ TR6060 swap, 489 rwhp, 444 rwtq - SOLD

11-25-2015, 09:53 PM	#5
jlpearl Performance-Dyno.com Drives: 2013 Camaro ZL1 Join Date: Mar 2010 Location: Loudon, NH Posts: 57	Great catch guys. I just checked the invoice and it is a 8.6" pulley. I was originally planning for an 8.1" which is 5%, but ended up with this one and never cleared it up in my brain. I adjusted the content of the above post accordingly. Sorry for the confusion!! Regarding the tune, this is something I do myself with HP Tuners at our dyno shop in NH. __________________ 2013 Camaro ZL1 - 10% pulley, roto-fab, tune 575 rwhp street temps, 604rwhp glory pull tuned by me at Performance-Dyno.com

11-27-2015, 12:38 AM	#6
nighttowl Sarcasm loading -------- Drives: 2018 ZL1 1LE Join Date: Dec 2011 Location: TX Posts: 1,806 View My Garage	You should change the title to 10%. __________________ "The salesman actually told me to stop getting it sideways during the test drive" 2018 MBM ZL1 1LE - Stock 2014 CRT ZL1 574 rwhp, 537 rwtq - SOLD 2010 IBM SS Camaro VVT L99 w/ TR6060 swap, 489 rwhp, 444 rwtq - SOLD

11-27-2015, 02:09 AM	#7
Ksacamaro Drives: 2014 Camaro ZL1 Join Date: Dec 2014 Location: Saudi arabia Posts: 102	8.66 is 10% not 5% __________________ Lingenfelter 630Hp Package , Afco Heatexchanger , Moroso Catchcan , D3 Tank , Siemens 63Pds/hr Injectors , Custom tune.

11-22-2015, 07:51 PM	#2
bigpierce90 Drives: 2013 crystal red tintcoat zl1 Join Date: Nov 2015 Location: new orleans Posts: 4	Did you have to get it tuned and where did you get your 5% pulley from? I would like to do the same upgrade.

11-23-2015, 05:42 AM	#4
vicnkathy Account Suspended Drives: 2014 Subaru Forester Turbo Join Date: Aug 2013 Location: NY Posts: 536	Something not right here lol

11-27-2015, 07:11 PM	#8
15ZL1 Drives: 2015 ZL1 Join Date: May 2015 Location: ILLINOIS Posts: 109	A6 or M6? __________________ ERL 434 LSA super block with 6 bolt 1/2" studs Ported stock blower 2.55/9.55 and NW 102 tb 5" JLT CAI, custom radiator Mamofied TFS heads with 1.8 Y/T rockers and Johnson lifters FI interchiller E85 flex fuel Circle D 3200 Tuned by Speed inc. 755/730 on 93 and 850/822 on corn

11-28-2015, 07:08 AM	#9
jlpearl Performance-Dyno.com Drives: 2013 Camaro ZL1 Join Date: Mar 2010 Location: Loudon, NH Posts: 57	This is an M6 __________________ 2013 Camaro ZL1 - 10% pulley, roto-fab, tune 575 rwhp street temps, 604rwhp glory pull tuned by me at Performance-Dyno.com

12-10-2015, 02:58 PM	#10
C Murda Drives: Camaros, BMWs, Cummins, Ninja Join Date: May 2012 Location: MA Posts: 20	what else do you have for mods? or is it just this pulley and tune?

12-10-2015, 06:31 PM	#11
jlpearl Performance-Dyno.com Drives: 2013 Camaro ZL1 Join Date: Mar 2010 Location: Loudon, NH Posts: 57	I have a Roto-Fab intake too, which was already installed for the baseline __________________ 2013 Camaro ZL1 - 10% pulley, roto-fab, tune 575 rwhp street temps, 604rwhp glory pull tuned by me at Performance-Dyno.com