The TH350 is an automatic shift, three-speed transmission. It is widely considered to be one of the greatest of automatic transmissions ever built.
What is the gear ratio of a TH350?
Transmission Gear Ratios
Which is 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 makes a TH350 shift?
The biggest factor for shifting is where the engine produces it’s peark HP. for example: 83 S10 drag truck we had, 350 SBC, with Edelcbrock Performer cam peaks HP at 5500 rpms pushing a TH350 witha 2800 stall converter, driving 3.73 rear.
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.
Is a 700R4 better than a TH350?
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.
Is a TH350 the same as a Turbo 350?
The TH350 is an automatic shift, three-speed transmission. … The Turbo 350 is the shortest and one of the strongest automatics that can be put into a Jeep.
Is a TH400 longer than a TH350?
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. Video Player is loading. This is a modal window.
How much power can a TH350 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.
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.
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. “Kickdown” and “TV” cables aren’t really the same thing.
How does TH350 kickdown work?
the “kickdown” is NOT that. It’s a TV cable, which operates the Throttle Valve inside the transmission, and is NECESSARY to be installed and PROPERLY adjusted so you don’t burn up the transmission. It has nothing specifically to do with the transmission dropping down a gear when you mash the pedal.
How do I make my Turbo 350 shift harder?
Removing the direct clutch waved plate helps it shift harder into third and tightening all the clutch pack clearances makes the shifts faster. Removing the inner lip seal in the direct drum gives third more holding power. Or you could use a fluid transfer plate installed under the front seperator support plate.
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.
Will a TH350 bolt up to a 454?
Registered. chevguy65 said: The th350 should handle your 454 no sweat. They are a good tranny.