hard 1-2 shifting

[umair]

I have a 2000 model ss with a high output ls1 and m30/4l60e transmission. If going from a slow start I can feel a very small jerk when it shifts from 1 to 2. But if I go a full start and fully slam the accelerator it has a hard jerk. No shifting issues or grinding. All gears shift smoothly and queitly except the 2nd gear. There is a faint thud when shifting to 2nd. Is this an easy fix.

[Jamiejamie]

Does it have a corvete servo? If it is shifting unormally hard though I'd say you've done a celluloid. Not major

[GEN3RATD]

sounds like a corvette/billet 1-2 servo

[nathanVY]

sounds like a corvette/billet 1-2 servo

If it was billet he'd also be complaining from broken neck/spine/vertebrae

[GEN3RATD]

If it was billet he'd also be complaining from broken neck/spine/vertebrae

billets are the same as corvette's, they only shift as hard as you accelerate

[nathanVY]

billets are the same as corvette's, they only shift as hard as you accelerate

corvettes are 15-20% more apply surface, billets are like 50-70% more?

[Jamiejamie]

Yes the billet are a bigger surface area again. I found you get a harder more noticeable shift when accelerating with a slower build up instead of just flat knacker.

[mummbles]

check you trans fluid level too. I've found that if the level drops too far it makes the shifts harder/harsher

[nathanVY]

Yes the billet are a bigger surface area again. I found you get a harder more noticeable shift when accelerating with a slower build up instead of just flat knacker.

Yeah that's what I thought lol, with a billet 1-2 servo you can barely drive smooth, you get thrown back in your chair even going as slow as possible.


Mad fun in the wet though

[GEN3RATD]

They both perform the same way though, if you weren't sure you could have either.

[Jamiejamie]

Lol yeah they throw you back a bit...puts more strain on your tranny than a corvette.
Its prob a celluloid if it's that bad, the shifting is suppose to be so harsh without them.
You have to drop your pan though to find out.