Tommy42088

So ive got a turbo silverado in which has a 4l65e that bit the dust. I was on an ebay cx racing 76mm turbo at the time and I'm switching to a vs racing 78/75 1.25ar. I wasn't able to switch and test the new turbo as the transmission Gave out on the 76. I'm looking around at transmission and have found some very well known guys who build 4l60 but on the other hand I've got my tuner and a couple buddies telling me that 60 never last no matter what you do, that an 80e is a must. So the question remains, can a 4l60e built right really last or am I waiting my Time and money??

wretched73

iTrader: (1)

The question doesn't remain.

You have a heavy truck and you want to keep adding power. Go 80e now.

You can read build after build here of guys who said they could make a 60e last and eventually they end up with an 80e.

MaroonMonsterLS1

a 4l60e can absolutely last at that power level in a truck
without a doubt
The issue is too many DIY builders that butcher a rebuild that then give everything a bad rap

If you want the ultimate in overkill...go 4l80e and everybody's right...a built 4l80e you won't ever have to worry about.
But if the budget isn't there for overkill...a built 4l60e by a reputable shop will be A-OK

Tommy42088

that's what I'm getting at and ill be 700+ with the new turbo. I was close to that with the ebay turbo

Tommy42088

I want it to be able to handle at least 800, and it seems alot of people are on the fence about it. If I did have one build it would not be by a shade tree mechanic. I can have one built for about 3100 and I've already got a good convertor in my truck so the changes would be very minimum versus buying an 80 for around 1000, then probably putting another 1500 in it then getting a convertor for another 1400 plus cross member, drive shaft modification and wiring adapter which is a little more work involved but if the 60 won't handle it then I'll bite the bullet and go that route.

Straightlineasassin

The work building installing then removing building an 80 and reinstalling should answer the "is it worth the trouble question" fact is even a built 60 is is gonna fail at some point an turbos drive hat fact home ven more. Best of luck .

Tommy42088

10-4 i just wanted some opinions, this guy says he can make the 60 last but everyone is telling me then opposite then I should probably stick with the majority vote and that's the 80

ZO6Ted

Maroon Monster1 always give great advice. My 2cents. My 07 truck that ran 7.64 theoretically put out 550ish @ 5150 4wd on 20's. My builder that had built many high hp power glides at the time iirc 2500-3000 I don't remember tore it down every few months as a courtesy.
It was just a 4l60 with Raysbestos clutches and no idea what else other than Vig triple disk convertor. I remember the clutches had wear every time. I realize a 4l65 or 4l70 has 5 planetaries so that would definitely make a difference but I wouldn't even consider not doing a 4l80. Total waste in the long run seriously. Do it now or it is absolutely inevitable without question. Just do it right or just regret.

Tommy42088

I had a 65 in the truck with a few basic parts in it and it lasted a little while at 600 but eventually bit the dust. It went 11.4 on the ebay turbo @ 122mph and that was leaving on vacuum as I didn't push the tranny to hard off the line but i will push the new tranny harder with the new turbo as the goal is 10.50. I actually found someone who can build one for me locally I'm just having a hard time finding a core at a decent price.

ZO6Ted

Pretty impressive! Mine was 4wd not sure if yours is but that would make a difference in longevity. 5.3 LS STS 67mm 8.5 lbs. zo6 cam precision 3k triple, 4.10's 4wd.. I really would upgrade. I understand its the ticket by 100's who've been there before. after 5 rebuilds and regrated it.
With a decent converter it's actually faster in the 1/4 all things considered.