mrb04

Just Wondering How Long You Guys Thank A 4l65 Will Last In A Yukon With 500 Rwhp. No Mods To Tranny Except Tt3000

goshawk23

without beefing it up, i am gonna say not long. although, it will do better than the 4l60

03sierraslt

iTrader: (22)

Well that converter wont help any, it will make your tranny get hotter. Its hard to tell but by doing a Tranny cooler ( A good one, not the stock one) and a shift kit and servos it will last longer. As far as time wise, Who knows... But all stock with that converter and 500 rwhp, it wont last long at all.

Badzracing

iTrader: (12)

2 hours......are we taking bets? j/k man...better beef it up

bud8fan

iTrader: (9)

dunno but this is what i have ordered for mine to give it the best chance:

TRANSGO 4L60E HD2 SHIFT KIT

700R4 4L60E BILLET 4TH SUPERIOR SUPER SERVO CORVETTE

700R4 4L60E BILLET SUPERIOR SUPER SERVO

TRANSGO 4L60E SEPARATOR PLATE 96UP TRANSMISSION LS1 LT1

4L60E FORWARD CLUTCH ALUMINUM ACCUMULATOR PISTON 4L65E

4L60E 1-2 ALUMINUM ACCUMULATOR PISTON SMALL PIN 4L65E

700R4 4L60 4L60E HUGHES DEEP ALUMINUM PAN

SERVO RELEASE CHECK VALVE 700R4 4L60E / CORVETTE ETC
LUBEGARD TH350 TH400 700R4 2004R AOD 727 4L60E 4L80E

40,000 GVW THERMOSTATICALLY CONTROLED TRANNY COOLER.

Badzracing

iTrader: (12)

The sunshell, input drum, ( and in 4X4 models the output shaft) are the major weak points. These things require completely tearing the tranny down to be installed. I've seen many broken and/ or severly worn planetary sets in these trannies as well. Not to mention that I personally broke a 300m anchor pin in my 700r4 ( replaced the 5 speed in my 99 with it). This pin holds one end of the band that is responsible for 2nd and 4th. Line pressure is extremely important in these trannies also, make sure to tune the tranny to match your trucks performance level.

BigTex

iTrader: (16)

My 4l65e is holding up pretty well with just a tt2600 stall, shift kit and servo. It still has firm shifts and no slippage. I don't trash it, but I do like to show off the 4 wheel burnouts.

1slow01Z71

iTrader: (36)

Oh yeah and I dont think it will last either the partsl isted above I think will be a large atep in the right direction. Just for and idea of how big a pos these things are I have put about 1900 bucks in hard parts to upgrade my tranny and I dont think its going to last with my new setup once its in IMO you should just ditch the 65e and get the 80e.

Badzracing

iTrader: (12)

Ditch the overdrive crap all together and put a t-400 in it. Wouldn't be a real hard conversion and will be damn near bullet-proof if built right. That's what I'll be doing real soon.

1slow01Z71

iTrader: (36)

My truck is still a DD so no overdrive and driving alot on the highway just isnt an option.