Question: Which Transmission Is Better Th350 Or Th400?

Will a Turbo 400 torque converter work in a 700r4?

Re: 700R4 and TH400 Torque Converter.

No it will not.

The 700R4 has a lock up torque converter and the TH-400 does not.

You will need to buy one based on the year of your trans too..

How long is a Turbo 400 transmission?

Chapter 2: Transmissions: Transmission LengthsTransmissionCase to ext. HousingOverall LengthTHM 400 (short tail)24 3/8″28 1/4″THM 400 (long tail)24 3/8″34″THM 200-4RN/A27 3/4″THM 700R4, 4L60, 4L60E23 3/8″30 3/4″8 more rows

What is the difference between a 700r4 and a Turbo 350?

The 700R4 has an overdrive while the TH350 does not. Overdrives allow for high-speed cruising, which saves fuel while lowering torque.

Is a 700r4 better than a th400?

The TH400 is much stronger, but it doesn’t have overdrive and the first gear is only 2.48:1. The 700R4 has an overdrive gear (0.7:1), and a 3.06:1 first gear, but it’s not as strong. So it depends on what your using it for and how much power you have.

Are 700r4 transmissions any good?

Its lower first gear ratio provides excellent performance for low vehicle speeds. Besides, a 30% overdrive brings about enhanced fuel economy, a reason that can also be attributed to the popularity of the 700R4. The torque that can be handled by a 700R4 transmission varies depending on its production year.

How much does it cost to rebuild a 350 transmission?

Re: What is the cost of rebuilding a 350 turbo transmission? I just had a th350 built by PTC. Total cost for a race built trans and 3500 stall converter was $1500 plus freight $125.

What transmission is best for racing?

Manual transmissions are lighter. Automatic transmissions that are specially designed for strip use shift quicker when tenths of a second count. If you’re on a budget and building a car that will run in the mid- to high-ten second range, a manual transmission is going to be the best option.

How much does a Turbo 400 transmission weight?

135 poundsFeatures of the TH400 Transmission Weighs 135 pounds without fluid. Bell housing integrated into the transmission. First gear: 2.48:1, Reverse gear: 2.08:1, and third gear is an even 1 to 1.

Are Turbo 350 and 400 torque converters the same?

A stock 400 is 13″ and a stock TH350 is 12″. 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.

How many gears does a Turbo 400 transmission have?

TH-400 transmissions are three-speed automatics, with a 2.48:1 first gear. Reverse gear is 2.08:1 and third gear is an even 1 to 1. Turbo 400s use three tail shaft lengths; the most preferred units for a GM swap would have the short 4-inch tail shaft.

Does a Turbo 400 have overdrive?

When it comes to a performance-oriented automatic transmission primarily used in modified, vintage streetcars, the Turbo 400 is usually the first unit that comes to mind.

How much horsepower can a Turbo 400 transmission handle?

400-450 HPAbout 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.

Is a th350 the same as a Turbo 350?

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.

How much does a Turbo 400 transmission cost?

Compare with similar itemsThis item GM TH400 Turbo 400 Stage 2 4×4 Transmission up to 650HPGM Turbo 400 Transmission Th400 Stage 3 Race Up to 800HPAdd to CartAdd to CartCustomer Rating5.0 out of 5 stars (2)(0)Price$1,699.00$1,999.00Sold ByPatriot Transmission & PerformancePatriot Transmission & Performance1 more row

What is the best transmission for a 350 Chevy engine?

TH350. Best transmission choice, hands down. The Turbo Hydra-matic 350 was first used in 1969 model cars. It was developed jointly by Buick and Chevrolet to replace the two-speed Super Turbine 300 and aluminum case Powerglide transmissions.

What fluid goes in a Turbo 400?

Amsoil ATF works with a Turbo 400. The high-quality ATF can withstand the intense pressure in a Turbo 400 transmission. As such, it enables it to perform and also offers optimal protection. You can also use Mobil 1 automatic transmission fluid.

How much power can a PowerGlide handle?

2,700A PowerGlide will hold 2,700 horse power.

Is the Turbo 400 a good transmission?

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. lbs. of input torque. Aftermarket building techniques take it well past that figure.

Will a th400 replace a th350?

Yes, the TH400 uses a different yoke than a TH350 and the tranny is longer so the driveshaft will need to be cut.

What’s better th350 or 700r4?

While a vehicle with 4.11 gearing may scream down the highway with a a TH350, it’s going to keep the engine in the power band longer. The 700R4 goes from a 3.06 -> 1.62 1-2 shift, which is way more aggressive than the Turbo 350’s 2.74 -> 1.57. Simply put, the TH350 is going to keep the vehicle in the power band longer.

Does a Turbo 400 have a kickdown cable?

The Turbo 350 kickdown function is mechanically operated via a cable mounted on the intake manifold near the carburetor. … When the Turbo 400 began reaching production models in the late ’60s, its kickdown switch was mounted on or near the carburetor.

What’s the difference between Turbo 350 and Turbo 400 transmission?

There are no alien probes involved. The Turbo 350 (top) and the Turbo 400 (bottom) are the quintessential GM automatic transmissions. Both are three-speeds, but the Turbo 400 is physically larger and designed more for the torque capacity of big-block engines.

How much does it cost to rebuild a th400?

TrunkMonkey Well-Known Member. The “complete kits” are $300-$700 depending on the quality and components. Figure most “consumer” shops are going to put about $300-$400 materials, and about $200-$400 labor. “Performance” shops will likely add about $200-$500 on top of that, depending on level of work done.

How much horsepower can a stock 2004r handle?

about 550 hpThe stock 200-4R input shaft is safe to about 550 hp. Shown here is the end of the shaft that fits into the overrun drum at the rear of the transmission.

Are th350 and th400 same length?

You didn’t do a swap from a long TH350 to a short Th400, More likely a short TH350 (6″ tailhousing), to a short TH400 (4″ tail). In that case the Th400 is about 1/2″ longer.

How much HP can a 700r4 handle?

Quote: 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. Add another $240.00 for the input drum. I give a one year warranty with all my transmissions & torque converters.

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. Even a near stock one will last quite a while if you keep your foot out of it.

How much HP can a Turbo 350 handle?

The Stage 1 TH350 is rated up to 450 hp.