GM1697

iTrader: (1)

So I have the trans-go hd2 kit in my truck, next time I'm in the trans for a filter change I want to throw the sonnax pin less 1-2 accumulator piston in there.

The stock piston is plastic in mine… which seemed strange at the time of install because the directions in the trans-go kit said it would be metal.

anyways which springs do I use with the pinless piston? do I go back to the stock springs or leave the trans-go ones in there?

gonzo 6.2

iTrader: (8)

years ago i did all pinless sonnax.IMHO a waste of money.just do the trans-go recommendation.

apex2112

The Trans-go spring will not work with the Sonnax pinless accumulator piston.
You will need to use your stock spring set up.
If you have wear in the case from stock pin, then not a waste of money.
Plus piston is metal not plastic.
You could also buy a stock metal piston here
4L60E 4L65E 4L70E transmission pistons,bonded rubber pistons

GM1697

iTrader: (1)

so which way should I go? Pinless with stock springs, or stock metal with my transgo springs? Or is the plastic one fine?

03sierraslt

iTrader: (22)

I will not use the plastic ones, seen too many of them break.

GM1697

iTrader: (1)

Alright so I guess I will just purchase the stock metal ones and throw them in. How do I know what size pin I have? It seems on the website linked above there are two options for stock metal pistons.

gonzo 6.2

iTrader: (8)

pin diameter is the difference

Velocity1

iTrader: (3)

I just had a complete stage 4 rebuild done on my 4L60E. All the best hard parts available including the hardened input/output shafts, wide kevlar band, best kolene clutches and steels, beast shell and Heavy duty center support, heavy sprags and GM 4 pinions front and rear. Billet pump assembly, etc.

I'm running the TransGo H2 kit along with Sonnax billet servos in both holes and a circle D 3200 278mm with 4.56's.

Once the trans settled in and parts mated, (and I'm currently running a Black Bear tune set for the old trans with 25% TM), it quickly became apparent the pinless 1-2 accumulator assy. gets on your nerves real fast during part throttle shifts. Returned to trans shop and had them reinstall the H2 recommended combo of parts. Shifts now are still mildly overly pronounced but much more tolerable. Just my humble opinion....

gonzo 6.2

iTrader: (8)

[QUOTE=Velocity1;5262760]I just had a complete stage 4 rebuild done on my 4L60E. All the best hard parts available including the hardened input/output shafts, wide kevlar band, best kolene clutches and steels, beast shell and Heavy duty center support, heavy sprags and GM 4 pinions front and rear. Billet pump assembly, etc.

I'm running the TransGo H2 kit along with Sonnax billet servos in both holes and a circle D 3200 278mm with 4.56's.

Once the trans settled in and parts mated, (and I'm currently running a Black Bear tune set for the old trans with 25% TM), it quickly became apparent the pinless 1-2 accumulator assy. gets on your nerves real fast during part throttle shifts. Returned to trans shop and had them reinstall the H2 recommended combo of parts. Shifts now are still mildly overly pronounced but much more tolerable. Just my humble opinion




once you get those check ***** installed used for plugs on the pinless. how the hell you get them back out? you dont

apex2112

Velocity,
If the tune was done for a stock trans. most likely the line pressures got turned up in the tune and now that you have a performance built tranny the line pressure is turned up with hard parts, now you have real high line pressures.
Have Blackbear adjust the tune for the built trans. and it should tone down some.