chad rock

What 4l60e transmission can handle this for long periods of time?1st built 4l60e lasted a year running 10.60s I added more power within a month It died then built it again and lasted 10 passes.open to suggestions thanks

383lt1impala

iTrader: (33)

www.performabuilt.com i believe there trans is in a ta that does low 10s.

JMBLOWNWS6

iTrader: (17)

FLT is the best IMHO.

performabuilt2

we have a few of our customers running in the low 11s and 10s and been doing it for a while and with level 2s I would suggest the level 3 for your setup however. we have a few sales going on right now feel free to take a look at our website or give us a call. we also have a few videos of our customers cars take a look at those also

heymoej

iTrader: (67)

i have tried a few from here & flt gets my vote..........

chad rock

you have tried performabuilt also?

performabuilt

iTrader: (25)

ask these guys that question
Click the pictures below to watch

performabuilt2

take a look at this thread also
https://ls1tech.com/forums/automatic-transmission/885981-down-out-rob-p-built-rescue.html

GMMillwright

iTrader: (4)

RPM did my trans. Works great.

Gilbert@Ace Racing

If you would like to discuss this build, give me a call.

No doubt we can handle it.

g

heymoej

iTrader: (67)

yes.....................

Ls1Envy

iTrader: (6)

Rob from Performabuilt built me a rock solid 4l60e, probably equivalent to there lvl 2 but i have the 5 pinion planets. The thing shifts flawless and i'm a little scared to get on it because of my rear, but i'm positive the thing could hold up to my power plus nitrous. Give Performabuilt a shout if you want quality+ A1 customer service.

URLOSN

iTrader: (29)

Hey Chad, this is the company i was talking about.

99Hawk262

iTrader: (19)

FLT or ACE all the way. Quality trannies that will take a beating all day long everyday. Do yourself a big favor and PM heymoej about his experience....he'll put you on the right path.

Gilbert@Ace Racing

Uh oh... I hope it was good!



g

navydiver2323

Carolina Performance Transmission built me a unbelievably rock solid trans that i finally got to make that 2-3 shift... tried many built trans that tried to get that 2-3 shift, but flared at first try... car weights 4100 lbs, and makes 550+rwhp/670+rwhp, i finally got me a trans to put me into the 10's....

TXCAMSS

iTrader: (60)

My Circle D Specialties built 4L60E has been running 9.9s-10.2s for a year and a half with no problems at all.

They are installing the new transbrake as we speak

URLOSN

iTrader: (29)

Yep all good stuff

Black LS1 T/A

OK ... I've gone thru five tranny rebuilds and none last thru the year.

The best I could dyno with my 6-rib was 549 RWHP / 757 RWTQ because of belt slippage at higher RPM's in 3rd gear. Now that I have 8-rib pullies, I feel the HP should match the TQ, and both numbers may even rise.

I have a 422 built by Golden West Performance , bored and stroked from a 6.0L iron block engine, procharger D-1SC running about 12 to 13 PSI, Pro Yank 3400, M/T ET Streets 11.5x16, 12 Bolt Mark Williams 3.73 Rear End, QA1 shocks, standard suspension mods, etc

I get stuff like this happens to me all the time (I run the most expensive tranny fluid) ... busted pump, stripped clutches, broken tail piece, sun shell, etc, etc. I've seen 3rd and 4th gear leave me on the track, and I limped home (or to my trailer now) in 2nd gear. I REALLY don't want to go to a 3 speed tranny like the TH400 or that big, heavy-assed 4L80E. I would LOVE for the 4L60E to work!




If you want to see her run just before I started breaking trannies, here is one:

http://www.youtube.com/watch?v=SPJWcaGeBnQ


This was before the 422, with the boost backed down to 8 PSI and only holding the car at half throttle in 1st gear. At 10 PSI during that timeframe, she ran 10.98 @ 126 MPH. I should get in the low 10's with this motor, but my drive-train and suspension hasn't been up to the task.

One reason I have been lazy about replacing my oil pump and installing my QA1's, Light-weight crossmember, A-Arms and 15" calipers is, I know when I do all that work, she will be sitting right back in the garage with a broken tranny.

Black LS1 T/A

I also have a problem ever since I put the 422 in:

1. If I am on the street, stock tires, ET Streets, whatever ... shift points occur as expected.
- (Please keep this item 1. in mind before anyone suggests I need to readjust shift points in my tune.)

2. Go to track: Shifts waaaaaaaAAAAAAYYYY early. 1-2 about 4800 RPMs, 2-3 about 5400 RPMs. That's starting off the line with gear lever in 3rd.

The only way I can change this behavior is to put it in 1st and shift manually, but 60% to 70% of the time, it over-revs and I bang the rev limiter. This is what happend last time at the track when I killed my oil pump.

As you can imagine, if I try to manually shift, it may shift anyhwere.

Look at this Log: (Where I have the lever in 3rd)

http://blackls1ta.com/ShortShift.xls

This was a log at a 1/8 mile track.

00:51.8 - 00:52.3 Notice I am rolling into the pedal. I'd burst into a spin immediately otherwise.

00:52.6 I've rolled to full thruttle here. Notice it shifts, even though my 1-2 shift point is more like 5800 or so. 2-3 is around 6200.

All I was doing was spinnin, really. That helps induce KR for me, too, when it jumps into 2nd and 3rd at such low RPMs.

This is an example of what might happen on the street (again, lever in 3rd), but I am spinning like crazy: (backed off of it when I went into 3rd)
http://www.blackls1ta.com/SampleXLS_EFILog.htm

Here is when I ran 10.84 at 125 at the track in automatic:
http://www.blackls1ta.com/FayDrag1.mht
I shifted manually, early, wondering if just manually shifting it may make it get past a certain point, to shift closer to edited shift points.

Here I shifted later, but the first run was a quicker time:
http://www.blackls1ta.com/FayDrag3.mht