98camaropower

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

mrvedit

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.

abbas461

iTrader: (55)

transgo hd2 + Sonnax Servo Kit + truck oil pan adds 1 quart that help little

Hardtop Brian

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.

jhshnh

Don't forget to install a nice cooler as well.

98camaropower

OK sonnax boost valve.. new o ring... should I install shift kit even if I really like the way it shifts now?

farmington

iTrader: (14)

With my new trans my guy said to use Dex6 fluid.

98camaropower

I do have a b&m transfer cooler I also installed temp gauge

mrvedit

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.

98camaropower

I agree it seems like the hd2 kit is what everyone is going with .. keep the info coming!!

98camaropower

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

mrvedit

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

98camaropower

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

ironmikektm525

When I did my yank I installed a sfi rated flexplate and arp bolts for the converter/flexplate. Don't forget to check gap

Roxas

iTrader: (88)

2-3, 3-2shift Solenoids (if you drop pan). They're like 13 bucks at the dealer

mjs1012

iTrader: (36)

-6an lines with a big cooler and truck pan would be good to do now. Go with the biggest cooler you can fit. I run the tru-cool h7b which is massive and keeps temps very cool.

98camaropower

I do have a b&m cooler along with transfer temp gauge

98camaropower

Where can I get the new o ring?

98camaropower

Where dI'd you buy the o ring

98CayenneT/A

Just stop in to any transmission repair shop and ask if you could purchase just a single 4l60e input shaft o ring.