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Old 03-31-2018, 06:17 PM   #1
DSMer1
 
Drives: 14 and 15 SS's
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Whipple 2.9 - 6rib 3.5" pulley

I am starting this thread for future searchers.
I have a Whipple kit on my SS.
I've been on the 3.75" pulley, stock 6 rib drive with no slippage.
I'm greedy so I just installed a 3.5" 6rib pulley.
I searched pretty heavily here and found two people saying it worked for them and several saying they got major slip. That's why I'm making this thread, everything I found was random posts.
I took it out and I have no slip yet, I was only able to build boost up to around 8psi so far because it is pretty cold out and I have no traction.
The car is going to the Dyno next weekend so I will be updating this thread of it holds or slips.
This car has the Corvette style front drive on it, so it has a little better belt wrap than the typical Camaro Whipple setup. I think that might be it's saving Grace in this case.
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Old 04-05-2018, 02:30 PM   #2
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I know what you mean, I had the same problem when searching around.

I've been running a 3.25" on the 6-rib for a few months now with no slip. And that's with an 8" balancer. My tuner said he's done a 3" before but recommends stopping at 3.25". Yours has got some good wrap.
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Old 04-05-2018, 04:15 PM   #3
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Wrap is not the issue with the whipple tensioner as you increase RPM tension gets tighter to the point of almost 360 degrees. I’m seeing most issues are setting incorrect tension. Whipple has two different tensioner measurements depending on the model year.
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Old 04-11-2018, 10:46 PM   #4
DSMer1
 
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Well it didn't slip.
The car made 729/619 to the rear tire on 10.5psi. Boost is solid for now. I'll keep this updated if anything changes.
I think the Corvette front drive makes the difference.
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Ls3, 6L80, Whipple 2.9 with 3.5" pulley, rotofab, kooks headers to exhaust tips, BTR PD stage 3 torque cam, DSXTuning flex fuel kit, DSXTuning aux pump kit, DSXTuning fpcm, ID1050x, active interchiller 19" kit, varimax pump, BMR toe rods, BMR trailing arms, BMR sub frame connectors, lsa torque converter
729/619 at the tire on 10.5psi
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Old 04-11-2018, 10:48 PM   #5
DSMer1
 
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https://youtu.be/Wg07KZ8b6QU

https://youtu.be/gAqpU22jvzE
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Ls3, 6L80, Whipple 2.9 with 3.5" pulley, rotofab, kooks headers to exhaust tips, BTR PD stage 3 torque cam, DSXTuning flex fuel kit, DSXTuning aux pump kit, DSXTuning fpcm, ID1050x, active interchiller 19" kit, varimax pump, BMR toe rods, BMR trailing arms, BMR sub frame connectors, lsa torque converter
729/619 at the tire on 10.5psi
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Old 04-14-2018, 11:10 AM   #6
Jason Lester
 
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Quote:
Originally Posted by DSMer1 View Post
Are sedans even allowed to post?
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Old 04-15-2018, 12:02 AM   #7
UNRIVALED SS
 
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Send a message via Yahoo to UNRIVALED SS
Strong !!
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Old 04-15-2018, 01:31 AM   #8
DSMer1
 
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Quote:
Originally Posted by Jason Lester View Post
Are sedans even allowed to post?

Jason!!!! Good to see you bud! I was thinking about texting you to find out if you have been to the track...?
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Ls3, 6L80, Whipple 2.9 with 3.5" pulley, rotofab, kooks headers to exhaust tips, BTR PD stage 3 torque cam, DSXTuning flex fuel kit, DSXTuning aux pump kit, DSXTuning fpcm, ID1050x, active interchiller 19" kit, varimax pump, BMR toe rods, BMR trailing arms, BMR sub frame connectors, lsa torque converter
729/619 at the tire on 10.5psi
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Old 07-18-2018, 09:58 AM   #9
4U2NV-SS
 
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How can I get my hands on that same tensioner set up???
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