o2k

So my input shaft and drum was destroyed in my 700r4/4l60 and I've decided to upgrade the trans. I am planning on purchasing the sonnax Smart-Tech® Input Housing Kit with Heavy Duty Input Shaft.. but it states that "Requires '91-later 3-4 apply ring; Requires '97-later ring gear; Requires '97-later stamped steel forward piston. Cannot be used with aluminum forward piston or Sonnax billet forward piston 77764-01"

Does anyone know what the part number for these parts that I need? I can't figure it out from my searches..

Also, are there any hardened output shafts out there that aren't super expensive? Thanks for help in advance.

coryforsenate

iTrader: (1)

I'll get you started with the 97-later forward piston

http://www.transmissionpartsusa.com/...-00035954a.htm


But if you still have all the old aluminum pistons, for $30 total you can get all 3 bonded steel pistons instead of just the forward piston for $15.

http://www.transmissionpartsusa.com/...-00035954k.htm


If you do replace all the pistons, you'll need to also get the updated overrun spring cage (AC Delco #24206085) which is about $10.

mrvedit

The 3/4 apply ring, commonly called the "#7" has part number:

08685043 3-4 clutch spacer #7

Various billet input shaft are available in the $350 range. FLT may have some in stock.

o2k

Thanks guys so much for the information!