Q&A

Can I swap my 4L60E with a 700R4?

Can I swap my 4L60E with a 700R4?

If you’re going to trade out your 4l60E for a 700R4, try to use an 87 on up. Both the trannies basicly use the same internal parts, so one shouldn’t be that much better than the other. Over the years GM did fix some of the weak points, with these trannies and the aftermarket, took care of some more.

Is a 4L60 a good transmission?

In short, the 4L60E is an excellent transmission that continues to be improved. It’s one of the most popular automatic transmissions in America, and there are still millions of them in use. Gearstar builds high performance transmissions that are handbuilt in our shop.

Does a 4L60 have a TV cable?

There are no TV cable, mechanical speedometer drive, or governor provisions. Not just a simple kickdown cable like your TH350 analogue, the TV cable controls line pressure and shift points.

What does a 4L60 transmission fit?

The 4L60-E is found in nearly every GM rear-wheel-drive application, including the C/K Truck, Sonoma, Jimmy, Tahoe, Yukon, Astro, Safari, Suburban, Bravada, Firebird, Camaro and Corvette.

Can you use a 4L60E without a computer?

Externally, all it needs is a 12-volt source and an engine-vacuum reference. However, if your trans is, in fact, a 4L60E, running it off a computer is mandatory. Never mind TCC lockup; without a computer, the trans won’t shift at all.

Can you replace a 700R4 with a 4L80E?

No, neither the 4L60E or 4L80E will directly swap in. Your 4L60 or 700R4 is a hydraulically shifted trans with an electric lockup in it where as the 4L60E and 4L80E are both fully electrically shifted.

How much power will a 4L60 hold?

A well built 4l60e can handle some serious power. We have cars running 500-600 and 700 rwhp as the power increases of course the odds of failure do increase but we have had very good results. Generally a stock rebuild is not adequate for much more than general bolt ons however.

Does the 4L60 need a computer?

Externally, all it needs is a 12-volt source and an engine-vacuum reference. However, if your trans is, in fact, a 4L60E, running it off a computer is mandatory. On “E” transmissions, the computer controls everything: TCC lockup, gear changes, shift quality and firmness, and line pressure.

What does 4L60 stand for?

In 1990, the 700-R4 was redesignated the 4L60, with “4” meaning four-speed, “L” for longitudinal installation (north/south), and “60” meaning light-to-medium-duty use and 6,000-pounds gross vehicle weight. Although the 700-R4 had a new designation, the same old driveability and shift programing issues persisted.

Does a 4L60 have a kickdown cable?

There are four main differences to the 4L60E that started in some ’92 GM vehicles (Corvettes) and ran for the next couple of decades. The 4L60E has no kickdown or TV cable, and all of that work is done through solenoids that are run thanks to a VSS at the back of the transmission.

Category: Q&A

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