installing yank ss4000 what would you replace while trans is apart?
#1
installing yank ss4000 what would you replace while trans is apart?
installing yank ss4000 on my 98 Camaro ss with 60k stock 4l60e I have all bolt ons an 3.73 gears just looking for a stall that will give me great numbers at the strip but easy to drive around town. so while I have the 4l60e apart does anyone recommend changing anything or upgrading anything while its apart? I did install a trans cooler already.. any advise is appreciated
#2
Moderator
I assume you mean you have the trans removed and not really apart.
You might consider installing a new front pump seal.
And remember to install a new o-ring on the input shaft.
Finally, I always suggest installing the Sonnax 4L60e-LB1 boost valve on '96-'05 transmissions. It will increase your line pressure a bit across the board; also since it has o-ring seals it will overcome any bore wear which might be making your current line pressure erratic.
You might consider installing a new front pump seal.
And remember to install a new o-ring on the input shaft.
Finally, I always suggest installing the Sonnax 4L60e-LB1 boost valve on '96-'05 transmissions. It will increase your line pressure a bit across the board; also since it has o-ring seals it will overcome any bore wear which might be making your current line pressure erratic.
#4
10 Second Club
Definitely get the input shaft o-ring. I didn't and had to do it all over because of a leak. While I had it out the second time, I also replaced the front pump deal.
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#9
Moderator
If you are OK with removing the valve body, then installing the HD2 shift kit is a good idea.
Else the high stall converter will make the shifts feel very soft.
The shift kit also allows more fluid to flow to the 3/4 clutch which will help overcome any small leaks in the circuit.
Else the high stall converter will make the shifts feel very soft.
The shift kit also allows more fluid to flow to the 3/4 clutch which will help overcome any small leaks in the circuit.
#11
i am uneducated about the shift kits.. if i was to install the sonnax boost valve would that give me the same effect of the hd2 kit? an does the hd2 kit effect my ET at all? as far as tuning am i still able to shift smooth around town... i don't want aggressive shifts when im just driving to work
#12
Moderator
You sent me a PM with more info; specifically that the trans has only 60K miles and
you want good ET times.
Your shifts will feel very soft after installing the 4000 stall.
Therefore, if you want to just maintain the shift feel, you will need the HD2 kit.
The HD2 shift kit involves drilling the separator plate. This not only speeds up
the shifts, but also reduces slippage during WOT shifts, especially the 2-3 shift.
So yes, I recommend installing the HD2 kit.
Furthermore the 4L60E has a relatively week forward sprag, especially earlier
ones like yours. Therefore, I also recommend the Sonnax HD 2-3 shift valve and
then drag racing in [D3]. This valve keeps the overrun clutches applied in all
gears (with shifter in D3) which reduces the load on the forward sprag.
With only 60K miles, your boost valve bore probably isn't overly worn and the
HD2 boost valve might be all you need. However I still recommend the Sonnax boost valve as it o-rings seal better for more consistent pressure control.
Therefore I recommend:
Transgo HD2 kit - only install the parts that don't require opening the internals.
Transgo 46-PLT-96 separator plate - first drill according to V8 instructions, then according to HD2 kit
Sonnax 4L60E-LB1 boost valve
Sonnax HD 2-3 shift valve
For the HD2 kit, only install one spacer in the 1-2 accumulator.
Drill the 2-3 shift (3rd apply) hole to at least .101.
With that you will have a trans that shifts fast, reduces slippage and will last
longer that it would without those parts. With just one washer in the 1-2 accumulator your 1->2 shift won't be harsh. Or put in no washers, pro builder Dana (PBA) recommends no washers to reduce stress on hard parts.
Here is a recent slightly related thread where the OP was very happy after rebuilding his
trans with some of these parts:
https://ls1tech.com/forums/automatic...me-advice.html
you want good ET times.
Your shifts will feel very soft after installing the 4000 stall.
Therefore, if you want to just maintain the shift feel, you will need the HD2 kit.
The HD2 shift kit involves drilling the separator plate. This not only speeds up
the shifts, but also reduces slippage during WOT shifts, especially the 2-3 shift.
So yes, I recommend installing the HD2 kit.
Furthermore the 4L60E has a relatively week forward sprag, especially earlier
ones like yours. Therefore, I also recommend the Sonnax HD 2-3 shift valve and
then drag racing in [D3]. This valve keeps the overrun clutches applied in all
gears (with shifter in D3) which reduces the load on the forward sprag.
With only 60K miles, your boost valve bore probably isn't overly worn and the
HD2 boost valve might be all you need. However I still recommend the Sonnax boost valve as it o-rings seal better for more consistent pressure control.
Therefore I recommend:
Transgo HD2 kit - only install the parts that don't require opening the internals.
Transgo 46-PLT-96 separator plate - first drill according to V8 instructions, then according to HD2 kit
Sonnax 4L60E-LB1 boost valve
Sonnax HD 2-3 shift valve
For the HD2 kit, only install one spacer in the 1-2 accumulator.
Drill the 2-3 shift (3rd apply) hole to at least .101.
With that you will have a trans that shifts fast, reduces slippage and will last
longer that it would without those parts. With just one washer in the 1-2 accumulator your 1->2 shift won't be harsh. Or put in no washers, pro builder Dana (PBA) recommends no washers to reduce stress on hard parts.
Here is a recent slightly related thread where the OP was very happy after rebuilding his
trans with some of these parts:
https://ls1tech.com/forums/automatic...me-advice.html
#13
That was awesome info it definitely made me understand what really goes on .. thanks.. I will most likely get with PBA they have contacted me before saying that they can include everything in a HD2 kit in gear it more towards how I drive the car
#18
I assume you mean you have the trans removed and not really apart.
You might consider installing a new front pump seal.
And remember to install a new o-ring on the input shaft.
Finally, I always suggest installing the Sonnax 4L60e-LB1 boost valve on '96-'05 transmissions. It will increase your line pressure a bit across the board; also since it has o-ring seals it will overcome any bore wear which might be making your current line pressure erratic.
You might consider installing a new front pump seal.
And remember to install a new o-ring on the input shaft.
Finally, I always suggest installing the Sonnax 4L60e-LB1 boost valve on '96-'05 transmissions. It will increase your line pressure a bit across the board; also since it has o-ring seals it will overcome any bore wear which might be making your current line pressure erratic.
Where can I get the new o ring?
#19
#20
TECH Junkie