Can a GMC truck get a 5 speed overdrive?

Can a GMC truck get a 5 speed overdrive?

2-wheel drive or 4-wheel drive with divorced transfer cases. Our line of products offers simple ways to upgrade your 3 or 4 speed to a Tremec five-speed or a complete automatic to five or six-speed overdrive. For the customer that wants more fun & drive-ability out of their C/10 – C/20, we have you covered.

What kind of overdrive does a 4L60E have?

4L60E No Overdrive Diagnosis. The 4L60E is a for speed automatic transmission with a .70 overdrive. The overdrive gear is gear number four. As the 4L60E ages, one of the most common problems that it develops is that it won’t shift into overdrive anymore.

How much does a 78 to 1 overdrive ration increase speed?

The .78 to 1 overdrive ration will increase your vehicle speed by 28.6%. Fuel savings are guaranteed to be over 20% in both diesel and gas applications and are typically improved to right at 28%. The UNDER/OVERDRIVE™ will pay for itself while giving you tremendous performance gains in torque multiplication and horsepower.

What’s the problem with the 4L80-E no overdrive?

The most common problem facing the 4L80-E NO OVERDRIVE and how to deal with it. Not open for further replies. If the problem is electrical then chances are you can troubleshoot the problem yourself. The torque converter has a torque converter clutch. It is this clutch that provides the mechanical coupling from the engine to the transmission.

Can a Chevy TH-400 be converted to an overdrive?

We swapped a big block Chevy into the car a few years ago with a TH-400 transmission and now I’d like to add an overdrive transmission. What will it take to convert this new trans into my car?

What’s the gear ratio on a TH-400 overdrive?

The 4L80E is just a longer, heavier, overdrive version of the TH-400. It uses the same first three gear ratios but adds a 0.75:1 overdrive. This means that with a 3.55:1 rear gear, the overdrive drops the effective rear gear ratio to 2.66:1.

What causes OD on a 4L80 diesel?

Since your transmission has 200Ks on it the problem is likely that the valve sleeve bore has worn. When the Torque converter Solenoid strokes the piston the transmission fluid leaks past when hot. The hydraulic signal get so weak that it will no longer activate the control valve within the pump thus kicking in OD.