Missed a shift now it is dead.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
NOW,,,I see what your talking about... I wrote my post and right before I posted my post,,,,he posted that reply. So it looks like I was answering his question about the tranny drive train noise.
I wouldn't worry about that noise until you get the engine/vibration problem fixed. That noise could very well be clutch noise, The same noise that you normally get when you put the car in neutral and turn the engine off, Its the clutch disk oscillating on the torque tube input shaft.
The vibration issue is most likely the engine running on cylinders that are either not firing or firing with very low compression. Check the push rods and get that issue resolved and see if theres any other issues when the engine is running better. If the push rods are fine, do a compression test.
BC
Melting Slicks
Joined: Dec 2004
Posts: 2,847
Likes: 1,144
From: Sleepy Hollow- NJ
Not necessarily. Two main weak points in the stock version of our egines are the connecting rods which have a high tendancy of breaking when over revved, and push rods. Forged connecting rods and Chrome Moly push rods will drastically decrease the opportunity for breakage if the engine is over revved. I recently had a missed shift from 6700rpms in third gear to 2nd, and no breakage done to the motor. Not that I would like to make a habit doing this...but it happens, and none the less nothing broke with the new engine components. If my engine were still with stock push rods, connecting rods, rings, pistons, springs and valves, something would have most likely broken with this type of stress put on it.
Forged bottom ends can take the beaten of a super charger or turbo's under most conditions. An over rev here and there on a naturally aspirated forged bottom end shouldn't cause breakage. Strength to handle abuse is the whole point of forging the internals.
Forged bottom ends can take the beaten of a super charger or turbo's under most conditions. An over rev here and there on a naturally aspirated forged bottom end shouldn't cause breakage. Strength to handle abuse is the whole point of forging the internals.
Drifting
Joined: Sep 2006
Posts: 1,571
Likes: 1
From: st.louis mo.
Your heads are toast you might as well look at replacments since it's usally cheaper then rebuilding your stock ones.
I did the same thing 3-2 instead of 4th. I put a new shifter in the same day. The pistons kicked hit every valve some worse then others. Same thing the car idled but barley. Towed it the shop and did heads/cam and called it a day.
Hopefully your pistons are OK. Don't try and start the car or anything. I am not sure bump starting it was a great idea but what done is done.
Good luck
I did the same thing 3-2 instead of 4th. I put a new shifter in the same day. The pistons kicked hit every valve some worse then others. Same thing the car idled but barley. Towed it the shop and did heads/cam and called it a day.
Hopefully your pistons are OK. Don't try and start the car or anything. I am not sure bump starting it was a great idea but what done is done.
Good luck
Team Owner
Joined: Jan 2004
Posts: 22,185
Likes: 65
From: NJ
Not necessarily. Two main weak points in the stock version of our egines are the connecting rods which have a high tendancy of breaking when over revved, and push rods. Forged connecting rods and Chrome Moly push rods will drastically decrease the opportunity for breakage if the engine is over revved. I recently had a missed shift from 6700rpms in third gear to 2nd, and no breakage done to the motor. Not that I would like to make a habit doing this...but it happens, and none the less nothing broke with the new engine components. If my engine were still with stock push rods, connecting rods, rings, pistons, springs and valves, something would have most likely broken with this type of stress put on it.
Forged bottom ends can take the beaten of a super charger or turbo's under most conditions. An over rev here and there on a naturally aspirated forged bottom end shouldn't cause breakage. Strength to handle abuse is the whole point of forging the internals.
Forged bottom ends can take the beaten of a super charger or turbo's under most conditions. An over rev here and there on a naturally aspirated forged bottom end shouldn't cause breakage. Strength to handle abuse is the whole point of forging the internals.
A stock bottom end is pretty resistant to short duration over rev damage
Last edited by Chevy Guy; May 14, 2009 at 12:48 PM.
