Who has the quickest 4L60E equipped F Body? Anyone know? I want to know who has a fast car that the tranny actually LIVES and is not changed every 3 months. Here is what is in my tranny
will it live?


I have a Big *** cooler, a yank 3500 converter and theses parts internally


Alto red clutches with Kolene steels

Raybestos blue plate overdrive clutch set

hardened input shaft, front drum,reaction shell and roller bearing
(PATC torque drive kit)

29 element sprag

front and rear 5 pinion planetaries

corvette servo

13 vane front pump

1-2 accum spring

heavy duty pump slide spring

Raybestos Kevlar band

Hardened pump rings

"The Beast" sun shell

Shift improver kit

Car is"hoping" to have 500RWHP and weigh 3700lbs with driver

David

 

Me and Dirk (RacinLT1) went 11.0's with a 4L60E. My car should go 10.80's if it ever dead hooks off the line. I'm sure someone has gone faster, but probably not for too long.

 

Went a 10.68 @129 with a 1.59 60' on the 4L60E and a stock 10 bolt(and stock untouched LT1 heads). This was my first pass on my new set up. It was a 6.8 in the 1/8 since then I have made several 6 second passes on it. The guy that built mine is local and also has a 5.3 liter ext. cab truck with a 4L60E 600+rwhp that is street driven and runs 11.7's and is still living.



JK

 

In sig below

I got two seasons out of the last fresh one.
Mines close to the above build up besides the following:
*10 vane pump blueprinted with hardened vanes and rings.
*4 gear planet in stock sunshell... scarry stuff.
*all sonex componets in valve body.
*custom Billet apply pistons
* transgo vaccum mod
* early 700 drum... this has wider lip seals than 60e.
* wider band
* stuffed 3rd gear pack, 10 disc.
* Blocked accum.
* full reds and kolens thruout

*4800 stall 10 inch ati nitrous built Treemaster with lockup, 2.8 stator ratio.
*Factory ECM controlled.
* 3725 weight!
Pretty much I get 1.39 to 1.46 sixtys depending on the track on a 200 shot.
Once I added the vac mod I started getting two seasons on the clutches. Removing the alum apply pistons and going the route I did was from braking those back in 1996, at that time making custom pieces was all I could do. Then in1998 and up 4l60's went to steel apply pistons with molded on lip seals ($28 a set), its to bad those weren't around back in '96 when I had the tool shop where I worked at make mine out of 2618.

...I would recomend including these in your build ups if the trans is from a 1997 and older car.

The last failure I had was the rear plant section but it was caused from a u-joint braking one of the two ears on the driveshaft and the driveshaft staying attached at 130 mph shaking the car like you could not belive. This caused alot of fractured stuff...

Matt Swindle went 10.2XX's two years ago and hes the quickest car I know about on a 4l60e.

 

I know you said f-body but one of the lingenfelter vettes ran 9.2s @ 15? with a Rossler 4l60e. As for me, I was going through 4l60s at an alarming rate. I'm not even that quick. I finally switched over to a 700R4 and haven't had a tranny problem yet...of course the motor is blown

 

is there much benefit going from a 4l60e to a 700r4? I thought that alot of the internal parts were the same... am i wrong? I have many of the same internal upgrades as well-5 gear pinion, hardened sunshell, and torque drive package, super servo, raybestos, blue steel plates as well-just fyi-i shattered that rear end 5 gear with pretty much stoch hp-go figure! (been through 3 trannys before the upgrades).

 

He has improved that to 10.26 by now !!!!!!

 

That is sweet.

 

have a freind that bilt mine. he is a hydrolic instructor at a local college. anyway he built a ton of trannies. some are holding up to a 10.6x spraying from line to line even through the shifts. on a street driver.

he shanges much more then you listed. he builds and rerouts the fluid flow and runs consistantly over 300psi line pressure. thats what you need to make that puppy last. if you have 275psi t'll last, anything lower it'll fail shortly.


4l60e is electronic, 700r4 is manually controlled

 

Anyone have a part number on the Trans go vacuum modulator mod, and what it entails on the install?


David