hey everyone.. so recently I was dicking around in my 6 speed 01 z.. cammed with supporting valvetrain.. and I missed a gear bad for the first time in my life. Except I don't think this missed gear was the typical neutral rev limiter scenario.. I think I actually somehow yanked 2nd instead of 4th. It happened very fast and I clutched in immediately (or as fast as I could) because the car spiked VERY high rpm and started wheel hopping real bad.. which made me think it had to of been 2nd. still can't believe it.. but anyway here's a video. I drove it home fine, no weird noises from engine or trans that i can tell, the cars got a dumped X pipe off long tubes so can't really hear every little thing, but i really think I might have fucked something up. Anyone ever do this and your car has been fine since? I'll be pulling heads to check for valve dings on the pistons. It sounded like ~8500 rpm...

 

I actually did this for the very first time recently lol. Best that I can tell eveything sounds the same, except for maybe a slight increased vibration around 80 mph. The vibration was there before after the torque arm install, but i swear it's just a tiny bit worse now.

 

Hey, you might be totally OK. I didn't hear any weird noises in the video. How does it sound idling? That's when you will hear naughty noises. LS engines are amazingly tough. The occasional wing-it to high RPM's can usually be handled.

 

 

^^^^^^^^ VERY good advice! ^^^^^^^^

 

Money $hift. Yikes. I highly recommend pulling a couple spark plugs and looking for eyebrows.

You mighta lucked out, depending on the valvetrain. But thirty minutes to check cylinders 1,2 is worth it. If you see eyebrows, my condolences.

 

$hifts suck

 

Don't pull the heads, Buy or borrow a bore scope and you should be able to see the piston tops easy enough. Since it was wheel hoping you may not have revved as far as you think. I put a brand new LSA supercharger with an new LS3 drive by wire throttle body. First time I turned the key and it fired up and idled fine. I shut it down to check for leaks and fired it a second time, RPMs shot through the roof instantly. Looked at the logs and it spiked just over 7,800 with no load at all. Checked everything over and it was fine. Long story short this happened twice before I figured out the cause and it still runs it's *** off a few thousand miles later.

Edit: I didn't see the borescope was mentioned already lol

 

 

 

Trust me I couldn't turn it off fast enough, Log showed it made 7lbs of boost also, It ended up being a defective throttle body. After the second time it happened I triple checked everything and then used a camera to watch the throttle body while just turning the key on and off and sure enough every so many cycles the throttle blade would go wide open and stay there, I tried another throttle body and it never did it again. First starts always worry me but I wasn't expecting that lol.

 

Been there done that and had a log of it. Wheel hop and everything like you said. I clutch kicked as soon as I realized and it was only 6800 in the logs.

 

 

You can pick up a bore scope on Amazon for your smart phone for less that $20.00 and it has great resolution and you can take pics.

 

 

Stock LS3, I run the Holley system and have to select one that is compatible and the stock LSA part number wasn't on the list so I bought a new takeoff LS3 throttle body.

 

 

 

8.Lug is right. I think you dodged a BIG bullet, and everything should be OK. These engines can wind farther than most pushrod V8's, farther into the ozone that you think.