How much horsepower can a Turbo 400 handle?

About 400-450 HP/TQ is the limit on the stock TH400. With ONE almost free modification and some minor valve body calibration changes, 800 HP on an otherwise stock TH400 is not a problem if it's assembled well (good endplay, etc), and the 34 element sprag is a wise addition above 450 HP or any drag usage.

Just so, how much horsepower can a Turbo 350 transmission handle?

The TH350 can easily handle 600 lb/ft when properly built. It doesn't take anything super fancy. I have a couple at 600+ using a stock intermediate roller clutch setup. The int roller clutch setup is the common failure point of a TH350 when making HP, getting aggressive shifts, and burnouts.

Furthermore, how much horsepower can a 700r4 handle? Stock is rated at 350 hp however some people have had trouble with them at around 300 hp. Since you are not drag racing with slicks, upgraded 700r4 will be fine. The kit mentioned above is great and can handle 550+ hp.

Just so, how much horsepower can a powerglide handle?

A powerglide can indeed handle 440 hp, hust put a good cooler on it especially if you are putting a higher stall converter in it.

What's better th350 or th400?

The TH350 uses a mechanical kick down switch, whereas the TH400 uses an electric one. A lot of people claim that he TH350 has less drivetrain loss than the TH400, which means that all things being equal, the TH350 is going to get more power to the rear wheels from an engine with equal power.

How strong is a th350?

The Stage 1 TH350 is rated up to 450 hp. Those seeking something a little stronger can check out the Stage 2 version (PN PA35102) that holds 550 hp and retails for $1,500 with a real world street price of $1,175 from most vendors. Both transmissions come with a standard one-year warranty.

What did a Turbo 350 come in?

The Turbo 350 automatic found its way into Chevrolet Camaros, Pontiac Firebirds and Chewy and GMC trucks. Although the transmission most notably matched GM vehicles with small-block V-8s, it also matched the block-block 396 V-8s, V-6s and the small Iron Duke in-line four-cylinder models.

Will a th350 bolt up to a 454?

It was designed to handle more torque than the TH350 was, and that's why most people prefer the TH400 over the TH350. But that alone doesn't neccessarily mean that the TH350 trans won't hold up very well to the power of your 454 engine.

How strong is a stock th400?

a stock th400 can probably handle 1.5 or 2 times the power of a stock 4l60e if not much more. Those th400's are called monsters for a reason, they can take a LOT of abuse.

How much does a Turbo 350 transmission weight?

120 pounds

Will a th350 hold up to a big block?

For most street applications, you can't beat the brute-strength reliability of the th400 (or the 4L80E) behind a big block. But, there is no reason that you can't use a th350 behind one, if it is properly built.

How much does it cost to rebuild a th350?

As for prices to rebuild, I can still get a standard TH350 rebuild with shift kit for about $300 there.

What is a 2 speed Powerglide?

2-speed automatic. The Powerglide is a two-speed automatic transmission designed by General Motors. It was available primarily on Chevrolet from January 1950 through 1973, although some Pontiac models also used this automatic transmission after the fire at the Hydra-Matic factory in 1953.

How much HP can a 4l60e handle?

See, that's all it takes to build a 4L60E trans that's rated to handle over 1,000 horsepower.

Is a th350 the same as a Turbo 350?

GM TH350 Automatic Transmission. The TH350 is an automatic shift, three-speed transmission. It was phased out of use and superceded by GM's 700R4 starting in 1982. The Turbo 350 is the shortest and one of the strongest automatics that can be put into a Jeep.

Is a 700r4 the same as a 4l60?

In 1990, GM decided to code and renamed their transmissions, the 700R4 is best described as a 4 speed, longitude transmission rated for vehicles around 6000 lbs. It was this information that was used to change its name to 4L60; therefore, a 700R4 and 4L60 are the same transmission.

How long does a 700r4 transmission last?

I've seen at least several people on this board say that the original 700r4 lasted over 100,000 miles but the replacement or rebuilt trans were only lasting 20-30,000 miles and therefore the 700r4 must be junk.

Are th350 and th400 interchangeable?

They are interchangeable, if you use the 13" converter in a TH350, be sure it clears the case. If you are doing a TH400 deal, use the TH350 converter Be sure the flexplate is drilled for both patterns.

Is a th400 longer than a th350?

The 400 is 3/4" longer than the 350 when comparing short shaft housings. Hence, the 400 shaft is 3/4" shorter in the same application. The 400 shaft should be 54 1/2" center of ujoint to center of ujoint. The 350 shaft 3/4" longer.

Is a Turbo 400 transmission good?

The TH400 is an automatic shift, three-speed, longitudinally positioned transmission. It is widely regarded to be a supremely durable and legendary transmission. The TH400 is conservatively rated at 450 ft.

Does a th350 need a kickdown cable?

See all 8 photos Other than the convenience of automatic downshifts into passing gear at highway speeds, there's no real need for a simple kickdown cable on those transmissions like this TH350 that have a vacuum modulator.