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Old 01-19-2013, 08:51 PM   #1
zl1fun
 
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9.55" crank pulley swap

What kind of HP gains can I expect with an Inovators West balancer w/ 9.55" pulley and Lingenfelter CAI? using an sct x3 93 octane tune.
Thanks in advance.
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Old 01-20-2013, 05:59 AM   #2
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auto 530rwhp 6spd 545rwhp...guess
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#917 A6. 10.67@126.2 1.53 60' ATI/Lingenfelter balancer (10" ring), stock upper pulley, 90mm TB, ID850s,Rotofab/Lingenfelter intercooler reservoir, Cooler Logic HX, Lingenfelter idler relocation bracket, NGK TR7ix, 160 t-stat, Dewitts Radiator, Texas Speed 1 7/8" headers(no cats). M&H drag radials 325/45-17 & M&H 28x4.5" bias skinnies. Tuning by Frost at Performance Autosport in Richmond, VA (804) 358-2505
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Old 01-20-2013, 12:31 PM   #3
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I went from 500rwhp to 552rwhp with just the 8.66. "No tune". I have a 9.5 pulley also, but am waiting till spring to install it, and get a tune.
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Old 01-20-2013, 06:37 PM   #4
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Idk, I installed mine w/air raid cai and jre tune just haven't dyno'd it yet. Hoping for close to 600rwhp but we will see.
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Old 01-20-2013, 07:15 PM   #5
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Originally Posted by Blown355 View Post
I went from 500rwhp to 552rwhp with just the 8.66. "No tune". I have a 9.5 pulley also, but am waiting till spring to install it, and get a tune.
were those actual dyno results?
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Old 01-20-2013, 07:19 PM   #6
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Originally Posted by Nemisis View Post
Idk, I installed mine w/air raid cai and jre tune just haven't dyno'd it yet. Hoping for close to 600rwhp but we will see.
cool, have you driven it yet to "feel" the difference? and are you using the sct x3 tuner ? I went with the x3 and 9.55" pulley with Lingenfelter CAI....so did you get it tuned for 93 or 100+ octane?
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Old 01-20-2013, 09:08 PM   #7
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Yes, using the sct x3 and....it's a big time difference in how it feels and drives now. If people think the tires suck stock, start modifying your z and you'll see how useless they really are. We only have 91 here so that's what it's tuned for.
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Old 01-20-2013, 09:09 PM   #8
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Yes, using the sct x3 and....it's a big time difference in how it feels and drives now. If people think the tires suck stock, start modifying your z and you'll see how useless they really are. We only have 91 here so that's what it's tuned for.
for sure!
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#917 A6. 10.67@126.2 1.53 60' ATI/Lingenfelter balancer (10" ring), stock upper pulley, 90mm TB, ID850s,Rotofab/Lingenfelter intercooler reservoir, Cooler Logic HX, Lingenfelter idler relocation bracket, NGK TR7ix, 160 t-stat, Dewitts Radiator, Texas Speed 1 7/8" headers(no cats). M&H drag radials 325/45-17 & M&H 28x4.5" bias skinnies. Tuning by Frost at Performance Autosport in Richmond, VA (804) 358-2505
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Old 01-21-2013, 12:16 AM   #9
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Quote:
Originally Posted by zl1fun View Post
What kind of HP gains can I expect with an Inovators West balancer w/ 9.55" pulley and Lingenfelter CAI? using an sct x3 93 octane tune.
Thanks in advance.
'

well that sould literall be around 590-600hp manual and 560-570 auto

that is 13spi with a cold air.

I know in testing on a manual they hit 575 with the rotofab intake 8.6 lower pulley on the stock tune with octane.

I am pretty sure I have seen lingenfelter cars in the 580-600hp range. they use the 2.55 upper but that is the same overdrive as the 9.55 lower.
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Old 01-21-2013, 10:01 PM   #10
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Well got her back today.....HOLY S$*%....amazing what a little boost will do. I am now pushing over the stock boost limit and she kicks out quit easily..so not sure exactly what my max boost levels are yet. I had to light them up at a stop light just to get some stick to test it. (3 deg F here tonight) ..but...Can definitely feel the gains. requesting the new 9.55" pulley / CAI tune from Ted tomorrow. I think I am going to run the torco as well. I guess there is a place not far from here that does dyno testing...might look into that some day. Thanks to my friend Danny for hooking me up with a reliable, knowledgeable mechanic...I really didn't mind paying a few bucks to have this done right vs baptism by fire.
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Old 01-22-2013, 03:24 PM   #11
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Got tune today. Loaded to sct x3. will load it to car in a couple hours. JRE recommended going w/ a 93 octane tune for this set up if not racing . will post later about how it feels and if it was successful.
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Old 01-22-2013, 06:04 PM   #12
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Success. I'm done....yeah right.... Thats plenty of power.....almost... I was pleasantly surprised by the gains. Very noticeable. I will do some data logging so Ted can fine tune . I did have one weird incident after warming the tires( by warming I mean smoke visible from a qtr mile or so. Hey, it's 10 degrees here so i had no option if I wanted some bite)...anyway....I got a MAF sensor code after my 0-80 run as I was stoping at the stop sign.... and it reduced my power to just enough to crawl home.........had I not had my sct x3 with me to clear the DTC's...It would have been a slow drive home. Once cleared, I ran hard a few more times from 0-100 or so with no codes or problems..not sure what to think of that incident. So to sum it up....8-10%(ballpark guess) power gains are very noticeable! Spring can't come soon enough..
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Old 01-22-2013, 10:26 PM   #13
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were those actual dyno results?
Yes.
http://m.youtube.com/watch?v=vdtx23OA71M#
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Old 01-22-2013, 11:41 PM   #14
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Success. I'm done....yeah right.... Thats plenty of power.....almost... I was pleasantly surprised by the gains. Very noticeable. I will do some data logging so Ted can fine tune . I did have one weird incident after warming the tires( by warming I mean smoke visible from a qtr mile or so. Hey, it's 10 degrees here so i had no option if I wanted some bite)...anyway....I got a MAF sensor code after my 0-80 run as I was stoping at the stop sign.... and it reduced my power to just enough to crawl home.........had I not had my sct x3 with me to clear the DTC's...It would have been a slow drive home. Once cleared, I ran hard a few more times from 0-100 or so with no codes or problems..not sure what to think of that incident. So to sum it up....8-10%(ballpark guess) power gains are very noticeable! Spring can't come soon enough..
Your not to far away from me!
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Old 01-24-2013, 09:15 PM   #15
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Not far at all! I have only seen 2 other ZL1's in the Peoria Area. I was pulling out on to the main road one day turning left just as another ZL1 was turning right from the other direction...what are the odds of that? It was cool.
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Old 02-13-2013, 04:56 PM   #16
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Very nice gains fellas!
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Old 02-13-2013, 09:18 PM   #17
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Yep, the pullies work well don't they....
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Old 02-14-2013, 01:00 PM   #18
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Yep, the pullies work well don't they....
How much power you making?
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Old 02-14-2013, 01:06 PM   #19
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What all can we put on our cars and tune with a hand held programmer from a vendor? How much power can we make at the wheels auto and M6? Thanks guys!!
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Old 02-23-2013, 10:26 AM   #20
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How hard is it to change out the lower pulley yourself? I want to do it.
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Old 02-23-2013, 10:34 AM   #21
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How hard is it to change out the lower pulley yourself? I want to do it.
its not that bad but you need the right puller and installer. I would suggest that if you are at all nervous about the process, get a veteran installer to help or trust a professional
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#917 A6. 10.67@126.2 1.53 60' ATI/Lingenfelter balancer (10" ring), stock upper pulley, 90mm TB, ID850s,Rotofab/Lingenfelter intercooler reservoir, Cooler Logic HX, Lingenfelter idler relocation bracket, NGK TR7ix, 160 t-stat, Dewitts Radiator, Texas Speed 1 7/8" headers(no cats). M&H drag radials 325/45-17 & M&H 28x4.5" bias skinnies. Tuning by Frost at Performance Autosport in Richmond, VA (804) 358-2505
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Old 02-23-2013, 10:47 AM   #22
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Thanks Stephen.
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Old 02-23-2013, 01:40 PM   #23
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here are the pulley install potential issues that people encounter. Removing the stock balancer bolt can be difficult as it is torqued to approx 230ft/lbs (37ft/lbs + 140 degrees). If your car is an automatic, the engine will turn and you have to use a tool to lock the engine at the flywheel once the starter is removed. Otherwise, you can use an air impact tool to remove this bolt (24mm). Next, the lower balancer must be removed using a puller like the OTC 6667. The A/C belt is a "stretch fit" and it will come off with the stock balancer. To reinstall: don't forget the seal on the snout of the balancer. Use a proper install tool like a hawk tool or equivalent threaded rod and nut/washer. You could use a longer M16 bolt but it is not advised as some have pulled the threads out of the crank this way. Make sure the keyway is aligned properly before install which is obvious. Torque the new GM bolt to 37ft/lbs + 140degrees or 235ft/lbs for an ARP(preferred) bolt. You must use a large torque wrench for this duty. Use Red Loctite if you want on the new bolt...there are opinions on this. Reinstall the a/c belt by rotating the crank bolt and pressing the belt with your fingers or use an install tool(no need IMO). Reinstall the accessory belt and the correct length supercharger belt for the ring diameter you chose. Make sure belt alignment is correct.
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#917 A6. 10.67@126.2 1.53 60' ATI/Lingenfelter balancer (10" ring), stock upper pulley, 90mm TB, ID850s,Rotofab/Lingenfelter intercooler reservoir, Cooler Logic HX, Lingenfelter idler relocation bracket, NGK TR7ix, 160 t-stat, Dewitts Radiator, Texas Speed 1 7/8" headers(no cats). M&H drag radials 325/45-17 & M&H 28x4.5" bias skinnies. Tuning by Frost at Performance Autosport in Richmond, VA (804) 358-2505
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Old 02-26-2013, 09:01 AM   #24
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How much power you making?
Waiting for spring to get to the dyno. I hate to guess but it feels like about 10,000 hp..lol
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Old 02-28-2013, 10:48 AM   #25
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guys question, with the 9.55 pulley doesnt it hit the lines that are right below the pulley? i was looking at a zl1 this morning with an ati balancer, and a 9.17 18% od lingenfelter pulley and it was damn close with that
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