What Is The Difference Between A 350 And 400 Transmission?

How much HP can a th400 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 good is a Turbo 400 transmission?

An overview of the TH400 transmission shows it is a durable transmission that can give a good performance. The TH400 was used in a wide range of cars from GM as well as other manufacturers. Interestingly, the transmission can be adapted for use in several engines today.

Does a Turbo 400 transmission have 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. This makes the first question more about torque converter selection.

What’s the best transmission for a Chevy 350?

Turbo Hydra-matic 350TH350. 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.

How much power can a Turbo 350 handle?

600 lb/ftThe 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.

Will a 200r4 bolt up to a 350?

All you would need to get the carburetor to work on the 350 engine would be a new intake manifold.

Who makes the best torque converter?

Top 5 Vendors in the Global Automotive Torque Converter Market – TechnavioCompetitive vendor landscape. The global automotive torque converter market is moderately concentrated with the presence of several vendors. … BorgWarner. … EXEDY. … Schaeffler. … Yutaka Giken. … ZF Friedrichshafen. … Browse Related Reports: … About Technavio.

What vehicles came with 200r4?

The TH-200-4R was used in GM rear-wheel-drive cars equipped with the 231 Buick, 301 Pontiac, and the Oldsmobile 307, 350 gas and 350 diesel engines from 1981-’90; however, many Chevrolet 267 and 305 V-8s also used the TH-200-4R because of the multi-fit bellhousing.

How much power can a powerglide handle?

3,500 horsepowerWith all the available upgrades, both the Powerglide and the TH400 are capable of withstanding an incredible 3,500 horsepower.

How do I know if I have a th400 transmission?

It is identified easiest by its “375-THM” designation cast in the underside of the tail housing. The TH475 was an extra-heavy-duty version, and was found in larger trucks from 1971 on. If you are trying to determine the TH400 from another in a vehicle, a fast way to tell is to look at the kick down mechanism.

Why is a 327 better than a 350?

In the vehicle, it’s more of a matter of “gearing” than revs. A 327 with it’s shorter stroke would need shorter gears so it can GET to its revs, where a 350, with its slightly longer stroke and more torque output will pull a little taller gear than the 327 will.

What’s better 700r4 or Turbo 400?

For any rig it’s going to depend on the purpose. 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.

How much does a Turbo 350 transmission cost?

If you’re looking for high-quality and affordable chevy turbo 350 transmission – you’ll find the best chevy turbo 350 transmission at great prices on Joom – from 8 to 17 USD.

Will a shift kit hurt my transmission?

When shifting between gears and overlapping the bands it tends to put the wear on the transmission that will eventually ruin it because you’re stressing 2 gears at once and sort of feathering them for a smoother shift. A solution after a rebuild is to install a shift kit which eliminates the overlap of gears.

Is a th400 better than a th350?

Automatic transmission fans will tell you that a TH400 is a stronger transmission, but the TH350 is shorter (meaning easier to adapt in smaller-bodied cars), and it saps a lot less horsepower from the engine to make it work. …

Will a 4l60 bolt up to a 350?

The 4L60E will bolt straight up to your 350. :yes: You will need some way to control the tranny though.

A favorite for engine swaps, the 350 is very easily modded because of the abundance of aftermarket parts. And because so many Chevy 350s have been produced, they’re affordable and easily attainable for swaps of all kinds. You can find a Chevrolet 350 in just about anything—on land, sea, or air!

What transmission fits a 350 small block?

The 350 has had TH200 , TH350, TH400 , 4L60 and more than likely the 4L80 automatics behind it. My truck with the Chevrolet 350 engine utlizes the TH400 . There would have been a variety of manual gear boxes behind the 350 as well.

Will a Turbo 400 replace a turbo 350?

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

What does BOP transmission mean?

transmission bell housing bolt patternBOP=Buick Olds Pontiac, and it refers to the transmission bell housing bolt pattern, which is different from Chevy.

Does a 200r4 have overdrive?

Rundown on the Numbers. The 200-4R is a 4-speed automatic overdrive transmission by GM, capable of fitting into most Chevy’s from the 80s and before, built similarly to the TH200 and TH350, as well as the 2-speed Powerglide transmission.

Are Turbo 350 and 400 torque converters the same?

Yes they are the same and the converter will work on a TH400.

What year is the best Chevy 350 engine?

L31 (2002) From a purely technical standpoint, the most recent version of the Chevy 350 would naturally be the best of the bunch. Marketed as the “Vortec 5700” engine, but known internally by the moniker of L31, this engine was used primarily in GM vans and trucks until 2002.

What is the difference between a 4l60 and a 4l80 transmission?

The 4L80E is larger and heavier than the 4L60E. Its more hefty build can be tied to its 236 lbs and a length of 26.4″. Alternatively, the 4L60E weighs 150 lbs (without fluid) and it has a length of 23.5″. A comparison between the size and weight shows that the 4L80E is significantly larger and heavier.

Which is better 4l60e or 700r4?

If the transmission has a large 18-pin electronic connector above the passenger side pan rail, it’s a 4L60E, as seen here. If it has a cable connection near the cooler lines on the passenger’s side, that’s a 700R4. The good news is that either way, you win.

Will a th400 shift without vacuum?

Unless it has a manual valve body it won’t shift without vacuum until very high RPM’s. Besides the fact that when you disconect the vacumn line the line pressure goes to full which can wreak havock inside the transmission, I don’t think that it will shift into high gear.

What is the strongest Chevy engine?

6.2L LT5As the power behind the 2019 Corvette ZR1, the new supercharged 6.2L LT5 represents the pinnacle of Chevrolet’s performance: It’s the most powerful engine ever offered in a Chevy production vehicle.

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 many gears is a Turbo 400?

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.

Will a th350 shift without vacuum?

No. You will need a vacuum source or it will not want to shift into higher gears. Only a full manual valve body allows for the lack of vacuum line. Find a vacuum port and hook it up…