What’S Better Th350 Or 700r4?

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.

I give a one year warranty with all my transmissions & torque converters..

How can you tell if a 700r4 is good?

Find one that has the dipstick in place and look for signs of leaks. The vehicle from which the tranny is being pulled should give a clue to its reliability. Ask for at least a partial refund if the tranny is found to be bad. If you find at least a 85+ tranny it’s a good core to rebuild.

Will a 700r4 work without a computer?

There are no TV cable, mechanical speedometer drive, or governor provisions. … To run a 700-R4 trans behind a carbureted engine without a computer, at the very least the TV cable must be hooked up to the carburetor and properly adjusted.

How do I make my 700r4 shift harder?

By drilling out a few holes in the spacer plate, installing a larger servo (553) and a larger boost valve, the transmission will shift quicker & firmer. Getting a 553 servo should be easy as many V8 folks remove them to upgrade to the 093 (Vette) servo (offer ten bucks for one).

Does a 700r4 have a lockup converter?

The GM 700-R4 & 200-4R transmissions utilize a lock up converter to help create a more efficient transmission. It takes stress off the fluid coupling of the torque converter and it helps decrease the amount of heat being generated at higher cruising speeds.

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.

What speed should 700r4 shift at?

40-45 MPH n. If the cable is adjusted too loosely your transmission will exhibit soft, stacked shifts (not spread out).

Can you replace a 700r4 with a th350?

700r4 & th350 can utilize the same trans mount. Shift linkage interchanges. Standard linkage adjustment will need to be done.

What year 700r4 is best?

1987The best cores for a 700R4 build were from 1987-92 they had all the factory upgrades that solved the lubrication issues that plagued the ’86 and earlier units.

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 longer is a 700r4 than a th350?

Length And Weight The TH350’s case length is 21 5/8 inches. Depending on the tail shaft housing, its overall length can either be 27 5/8 or 30 5/8 inches. The 700R4’s case length is 23 3/8 inches and its overall length is 30 3/8 inches. The TH350 weighs 120 lbs., while the 700R4 weighs 155 lbs.

Can a 700r4 handle 600hp?

The 700R4 can be built to handle 600 – 700 HP fairly easy with the right parts and the right torque converter as long as you start with a 1988 & later transmission. If you are going to have more than 750 horsepower, and you have a choice of transmission, then the 4L80E would be the way to go.

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.

Can you run a 700r4 without a TV cable?

The easiest way to do a 700R4 but no TV cable is install a 4L60E.

Why does my 700r4 shift late?

The TV valve can cause late shifts if worn badly. IF the TV cable is not adjusted correctly , it will shift late.

How much HP can a th350 handle?

Stage 1 TH350 – 500+ HP/TQ Stage 1 TH350 is reliable to over 500 HP/TQ. It’s a very tough unit.

What’s better th350 or th400?

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. … These transmissions weigh about 125 pounds.

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.