SSnakekiller

iTrader: (8)

Need info on what parts I should upgrade in my tranny to make it last a little while on roughly 600RWTQ. Engine is built bottom end(~9:1 CR) and slightly modified heads and will see approx 10-12psi boost

Trans already has a shift kit.

I was told by a trustworthy trans guy that builds 4l60's every day that all I need is:
1. Intermediate Servo
2. OD Servo
3. Kevlar Band

I know that cant be enough. What about clutches? He says he is going to make the trans shift so hard that the clutches will be fine.

Any other parts I should consider?

Thanks

WILWAXU

iTrader: (6)

For 600rwhp.. you should start looking at a TH-400 setup. Any 4L60E will be living on barrowed time on behind that.

SSnakekiller

iTrader: (8)

The car will not be so much drag raced. I might take it a few times in a year to the track and try to cut some 1.70's but mostly it will be daily driver with just Drag Radials.

I know the low end torque kills these trannys, but if I am easy on the low end, will the tranny hold up for a while with the mods I listed? Or maybe with the mods I listed + a few more????? ANy suggestions please?

I definatley want to maintain streetability and be able to get on it on the highway so TH400 does not sound good to me.

SDB

iTrader: (7)

get it buit professionally, anyone that says just add a couple of parts for 600 rwtq is a ******* moron. I have use Rossler for the past 14 years for my built autos. www.rosslertrans.com. A properly built 4L60e is going to run a coupe grand easy though!

SSnakekiller

iTrader: (8)

Spoke with a friend who has the exact tranny mods i described above and had the same guy do his tranny and saw his dyno sheet: 657RWTQ

He says he sprays about 2 bottles a week for the past 9 months no tranny probs. Also the guy he works for has an fbody shop down here and has a 10 second H/C + Spray Car and he also has the same mods for over a year now with no problems...

I think I will try it to start out with...if it fails down the road, i only spent $300