How much horsepower can a Turbo 400 transmission 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.

How strong is a Turbo 400 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.

Which is better Turbo 350 or Turbo 400?

1. Is there a big difference between a Turbo 350 and Turbo 400 – and which one do I want? They are completely different transmissions. The Turbo 400 is larger, longer, and heavier than the Turbo 350 and was designed to live behind higher-torque applications such as big-blocks.

How much horsepower can a Turbo 350 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.

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What’s better 700R4 or Turbo 400?

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.

How much is a Turbo 400 transmission worth?

selling it as a good unit and with a “it will work” or your money back warrantee, it should be worth $150-200. There are many shops that sell a stock rebuilt TH400 for $600.

How much does a Turbo 400 transmission cost?

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This item Gm Turbo 400 Transmission TH400 Stage 2 Race Up to 650 HP GM Turbo 400 Transmission Stage 3 Race with Trans Brake 800HP
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Does Turbo 400 have overdrive?

They are the strongest GM overdrive transmission ever produced, and easily accept upgrades to make them a great choice for extreme power applications. … A Turbo 400 has no lock up feaature, and although the lock up feature in the 4L85 is controlled by the transmission, it is contained in the converter.

Can you daily drive a Powerglide?

The Powerglide shares the exact same high gear ratio as any 3 speed. It is a 1:1 ratio. Therefore it will be on the converter at road speeds. The Glide, as with many 3 speeds, does not have lock up and the converter will be trying to generate some heat during daily driving.

Will a Turbo 400 replace a turbo 350?

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

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Is a TH350 stronger than a 700R4?

According to the big trans guys they are actually stronger than the 700; smaller, lighter, and a better 1st gear ratio. I have had a mildly built 200-4R behind a 462 in a 4000# car for over 10 years with no issues.

Is a Turbo 350 transmission good?

A turbo 350 transmission is the perfect transmission for your entry-level sports car, light truck, or rally race. High performance and tough parts give this transmission the ability to handle a variety of use cases.

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.

Can you swap a TH400 with a 700R4?

If you tow every once in awhile the 700r4 should be fine. I just got done building a 700r4 to replace my th400. Like they said, need to setup the tv cable properly if you do anything right at all. get the driveshaft with the tranny, and upgrade the cooler.

How much HP can a 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. Add another $240.00 for the input drum.

Is a Turbo 400 the same length as a 700R4?

Registered. edit: okay, AA sez the 350 is 21.5″, 700r is 23.375″, 4l60e is 21.875″, and 400 is 24.25″.

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