shift kit

[MRVPCalais]

hi everyone quick question. how do i know if there is a shift kit in my car. i have had the car for a while now and the previous owner said he did some work to the gear box. while driving it changes gear hard and this is while crusing. it doesnt make any noise while changin it just snaps my head back a bit. at full throttle it realy goes. also i get bit of wheel spin in second. does it mean there is one or is the gear box on its way. stupid question but still like to know thanks

[Patrio7]

well some dry chirping in 2nd sounds like a stage two to me

if the transmission was on its way out it'd be "loose" or "sloppy" ( like mine) but sounds like you scored a saving of a good $300+ upgrade :P just be sure to look after it with correct servicing

[skidsteer]

most likely mate
a true "shift kit" allows a higher hydraulic pressure in the gear box which means when the valves open its releases alot of pressure to the clutch plates grabbing gears alot harder, so you box is grabbing hard then i say you got a shift kit

[vq~gangsta]

I'd say you've just described a shift kit pretty clearly to me. Beware, there are two types of shift kits... good ones and shit ones!

See my thread at HELP, i'm getting rorted by my mechanic!

If you have a good shift kit, with upgraded servo piston, bands and springs, your transmission will actually be much stronger than if it were unmodified.

However, if it just has some holes drilled out to let through more transmission pressure through, thus making it go into gear harder, the constant drain of hydraulic pressure will put more strain on the pump, and possibly end up buggering your stall converter... not to mention that the hard shifting is going to be putting more strain on things like bands and clutches which also need to be upgraded accordingly.

A decent shift kit costs around $700, a cheaper bodgey one can cost almost nothing if drilling out a hole, or putting a ball baring in a tube is all it takes. I suppose it's that same old thing, you get what you pay for.

If he got the shift kit put in for free with a rebuild or something (like I did) I'd be wary... Otherwise if he paid for it to be done properly you should be loving it!.

[cracker]

no way a shift kit costs $700 no chance, many trans places drill out the serpetor plate the same as a transgo plate or other brand names to get it to shift harder nothing wrong with that, also corvette servos can be used and higher boost valves etc trans parts and cheap and theres not heaps of labour in installing one, $400 would be the most i would have pay including a service.

[Dan355]

no way a shift kit costs $700 no chance, many trans places drill out the serpetor plate the same as a transgo plate or other brand names to get it to shift harder nothing wrong with that, also corvette servos can be used and higher boost valves etc trans parts and cheap and theres not heaps of labour in installing one, $400 would be the most i would have pay including a service.

I agree! All holes are the same lol. Just make sure the shop knows what their doing. Go to a shop that specialise in race transmisions.

[totq]

hi everyone quick question. how do i know if there is a shift kit in my car. i have had the car for a while now and the previous owner said he did some work to the gear box. while driving it changes gear hard and this is while crusing. it doesnt make any noise while changin it just snaps my head back a bit. at full throttle it realy goes. also i get bit of wheel spin in second. does it mean there is one or is the gear box on its way. stupid question but still like to know thanks

take note of the tacho when it changes gear.
shift kits change gears very quickly so that the motor doesn't loose too much revs thus, maintaining power/momentum.
in a standard box, there is a significant loss in engine revs as it changes to the next gear.
but, best is to drive down to the nearest auto shop and ask...

[vq~gangsta]

no way a shift kit costs $700 no chance, many trans places drill out the serpetor plate the same as a transgo plate or other brand names to get it to shift harder nothing wrong with that, also corvette servos can be used and higher boost valves etc trans parts and cheap and theres not heaps of labour in installing one, $400 would be the most i would have pay including a service.

If you see my forum:

http://forums.justcommodores.com.au/...ad.php?t=40887

you'll see why cheap shift kits are a bad idea.

The corvette servo piston is the first upgrade you'd do to virtually any trans, including if you have a shift kit done. I'll be upgrading my servo piston on my next service, then i'll think about going the full shift kit. 300-400 is about what you'd pay for just the servo piston, and it's about 700-800 for the whole shift kit, which includes the servo piston.