Is a 700R4 a good transmission?
Is a 700R4 a good transmission?
The Bottom Line. The 700R4 is one of the best automatic transmissions that was launched by General Motors. It was renamed to the 4L60, and the latter also became a popular transmission name. Today, more enhanced transmissions have been launched, and they can still find their roots to the 700R4.
What does a governor do on a 700R4 transmission?
The transmission governor on a 700R4 is used to regulate the speed at which the transmission shifts into the next higher or lower gear. It accomplishes this through the use of two sets of centrifugal weights, each a different weight.
Can you run a 700R4 without a TV cable?
There are no TV cable, mechanical speedometer drive, or governor provisions. To run a 700-R4 trans behind a carbureted engine without a computer, at the very least the TV cable must be hooked up to the carburetor and properly adjusted.
How much HP can a stock 700R4 handle?
The Street/Strip 700R4 is good for about 550 hp maximum, but with the HD input drum it is good for about 625 hp max.
Why does my 700R4 shift so hard?
Some times it is a stuck Throttle valve. If yours has not been taken apart and has not had a spring put inhind the valve they will stick witch will cause late hard shifts. Try taking the cable off of the throttle linkage and pulling it all the way out and then letting go of it so it snaps back into place.
What speed should 700R4 shift at?
We will say that, when properly adjusted, the First-to-Second shift should occur at 15-20 mph; Second-to-Third shift at 25-30 mph; and Third-to-Fourth shift at 40-45 mph.
Can 700R4 handle 454?
Yeah a stock 454 won’t kill a stock 700r4 unless you’re planning on towing with it or hot rodding the 454 some day. Once you upgrade something though you’ll have a hard time with the weak parts like planetary, power band, output shaft. All of those should be upgraded if towing or building the engine are in your future.
What makes a 700R4 shift?
The 700R4 uses a cable that connects the throttle linkage to the transmission’s throttle valve (TV) in the valvebody. This is the governor that commands WOT up-shift speeds. The cable moves the throttle valve in the valvebody and increases transmission line pressure as the throttle opens.
How to troubleshoot a 1991 Chevy 700R4 transmission?
Most 1991 Chevrolets come with a 700R4 transmission. It is helpful to learn how to troubleshoot this automatic overdrive transmission before you take the car to a mechanic to be assessed, so that you know what issues you will need to address with the mechanic.
What does it mean when your 700R4 won’t shift?
700R4 won’t shift This is often a sign of a bad governor gear, or a TV cable that is not returning back when you let off of the throttle. Here is a pretty good resource on this subject. This is a pretty advanced problem for a shade tree mechanic and may be another one that you leave up to the professionals.
How long has the 700R4 transmission been in production?
It’s been over 20 years since the 700R4 made it into a production vehicle. While they have been fairly reliable over the years, we have written this guide specifically to help with troubleshooting your 700R4 transmission.
What does the TV cable on a 700R4 do?
This throttle position sensor is called the “TV Cable” This cable acts like the kick down switch would on a TH350 in that it’s physical, but lets the transmission know exactly where the throttle position is like a 4L60E.