difference between 700-r4 / 4l60-e

**INFERNO** · 11-29-2005, 01:22 PM

what is the difference between the 700-r4 and the 4l60e?

**Zboner** · 11-29-2005, 01:23 PM

there really is no difference but the 460le is electronically shifted.

**Ric** · 11-30-2005, 06:05 AM

4L60E is stouter from what I'm told. 4L80E is the mac daddy of O/D transmissions... they'll handle around 700 ft-lbs with a few touch-ups.

**hammertime** · 11-30-2005, 09:40 AM

4L80 is a heavy monster.

If you already have a 4L60E, you'd be better off beefing it up. Several here know the ins and outs. ZBONER is one who comes to mind...

**Zboner** · 11-30-2005, 09:42 AM

yes if you beef the 460le up it will feel like a totally different car then what it was before and will feel much more responsive then the stock

**INFERNO** · 11-30-2005, 01:17 PM

Well the reason I asked is my stock tranny went out and instead of rebuilding it i purchaced a raptor 700-r4 it and If i shift manualy it acts like a different beast but I have weird things happen from time to time. Just wondering if that is what causes them? I still have my 4l60-e and will rebuild it but at the time i didnt want down time.

prob 1. weird vibs
prob 2 at times on hard exeleration when it goes to shift into 3rd it wont accecerate until i let of the gas a little its not slipping because the rpms wont go any higher than 3000 does this have some thing to do with torque management?

**R&L'scamaro** · 12-24-2005, 06:32 AM

How can i see which one i have? And about how much do the 4L80E cost? What kind of tweeking is involved in beefing it and the 4L60E?

**crawlingt** · 12-24-2005, 08:16 AM

4l80 is definatly more expensive and i believe some modification has to be done.(but dont quote me on that)

**Ric** · 12-24-2005, 09:28 AM

Yeah, 4L80E was designed with diesel trucks in mind, so don't expect a big aftermarket for them(JET makes a drop-in unit for $2500ish). 4L60E can apparently be reworked in the valve body to where it can become a 6-speed automatic(1st, 1st o/d, 2nd, 2nd o/d, D, O/D. Saw that in a Hot Rod mag a few years back), and they have the same 3.06 1st gear as the 700-R4. It'll get you out of the hole real quick.

The 700-R4 get a bad rep as being weak... most folks can only build them to about 450 ft-lbs max. However, I do remember a dude in Woodstock, GA who built one for my buddy's 650-hp '84 T/A, knowing the power that it made, and guaranteed it for three years.