Fourth gear flat out acceleration - can't shift to 5th - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

PeeBee · 09-27-2012, 11:28 AM

OK... Maybe this is normal, maybe not...

Been on the autobahn a few times, and had it several times.

During flat out acceleration in fourth, the clutch pedal literally goes down, and I can't shift from 4 to 5 (trying to do so, it feels like it is going straight into 3rd).

Anyone else experienced this? Is this "behavior" normal?

djamphi555 · 09-28-2012, 07:18 AM

That does not sound right. Trying to accelerate after reaching 160km/h does not work well at all in 5th gear for me. 5th gear is more like overdrive just maintaining the speed. However, I can flat out accelerate all the way to around 215km/h in 4th gear. This is where I upshift to 5th. 5th goes in smoothly and my clutch pedal does not go down on its own.

Chevrolet Customer Svc · 09-28-2012, 07:39 AM

Quote:

Originally Posted by PeeBee

OK... Maybe this is normal, maybe not...

Been on the autobahn a few times, and had it several times.

During flat out acceleration in fourth, the clutch pedal literally goes down, and I can't shift from 4 to 5 (trying to do so, it feels like it is going straight into 3rd).

Anyone else experienced this? Is this "behavior" normal?

I would recommend going to a dealership if you think this may be a recurring issue. Please let us know what the outcome is!

Brandon
Chevrolet Customer Service

PeeBee · 09-29-2012, 01:22 PM

I'll ask my dealer to have a look at this when the crank flywheel gets replaced...

TinyToasta · 10-01-2012, 01:31 AM

Same issue here, although it doesn't occur frequently... Getting into 5th at 140+mph on the Autobahn seems to be a matter of luck, no matter what shifting technique used.... Even a ZR1 clutch doesn't seem to like that, the pedal goes light during such kind of runs

It feels like the transmission is blocked at times - synchros maybe?

09-27-2012, 11:28 AM	#1
PeeBee Drives: "Bee" ZL585, Dark Blue Suburban. Join Date: Nov 2010 Location: Luxemburg Posts: 1,244	Fourth gear flat out acceleration - can't shift to 5th OK... Maybe this is normal, maybe not... Been on the autobahn a few times, and had it several times. During flat out acceleration in fourth, the clutch pedal literally goes down, and I can't shift from 4 to 5 (trying to do so, it feels like it is going straight into 3rd). Anyone else experienced this? Is this "behavior" normal?

10-01-2012, 01:31 AM	#5
TinyToasta Drives: way too fast.... Join Date: May 2010 Location: Germany Posts: 297 View My Garage	Same issue here, although it doesn't occur frequently... Getting into 5th at 140+mph on the Autobahn seems to be a matter of luck, no matter what shifting technique used.... Even a ZR1 clutch doesn't seem to like that, the pedal goes light during such kind of runs It feels like the transmission is blocked at times - synchros maybe? __________________ custom build forged LSA, 379ci, TVS2300@15psi, 696rwhp/688ft-lbs, built by DH Individual, Customkingz, tuned by Jannetty Racing JRE rough idle cam, JRE ported lower intake manifold, OD cog drive, 6% OD crank pulley, ported ls3 heads, NW102mm TB, 1/2'' RDS spacer, IW 8-rib drive Pfadt Cradle Bushings, Arms & Rods, Pedders Supercar w/FE4 conversion, ZL1 sways, HE Twin Carbon Street Slayer, ZL1 Rear End (3.73) CTS-V Brake upgrade, Street: 22'' Vossen CV1, Strip: 18'' Forgestar F14 on MT Street Radials

09-28-2012, 07:18 AM	#2
djamphi555 Drives: Camaro 2010 Join Date: Mar 2010 Location: Germany Posts: 54	That does not sound right. Trying to accelerate after reaching 160km/h does not work well at all in 5th gear for me. 5th gear is more like overdrive just maintaining the speed. However, I can flat out accelerate all the way to around 215km/h in 4th gear. This is where I upshift to 5th. 5th goes in smoothly and my clutch pedal does not go down on its own.

09-29-2012, 01:22 PM	#4
PeeBee Drives: "Bee" ZL585, Dark Blue Suburban. Join Date: Nov 2010 Location: Luxemburg Posts: 1,244	I'll ask my dealer to have a look at this when the crank flywheel gets replaced...