How many splines does a TH350 input shaft have?
27 spline
The TH350, Powerglide, 700R, and 4L60E transmissions are the most common GM transmissions equipped with this 27 spline output. These transmissions have various output shaft stickout lengths depending on the vehicle that the transmission was originally removed from.
How many splines does a Turbo 350 have?
27-spline
The TH-350 has a 27-spline output shaft and is half an inch shorter overall than the TH-400. The TH-400 uses a larger 32-spline output shaft. The TH-350 is a direct swap for the Powerglide; both share transmission mounting positions, overall length, and spline count.
What is the difference between TH350 and TH350C?
A TH350 can be turned into a lockup transmission with an aftermarket kit and converter, but a TH350C CANNOT be tunred into a non lockup because it will burn up the transmission. So, long story short, as far as shift kits go, there’s no difference between a TH350 and TH350c for the same year.
How do I know if I have TH350 or TH350C?
Another way to tell the difference between a 350 and a 350C (lockup), is to look at the input shaft. The 350C will have snout with O-ring and a fluid passage drilled down the center for the clutch. The 350 shaft will be solid with a blunt end (no snout/fluid passage).
Are all TH350 cases the same?
Externally, all the TH350 transmissions look the same; however, internally there are some differences. Depending on the engine size of the car the transmission was removed from, it can have anywhere from 10 to 18 friction discs and 10 to 18 steel clutch plates inside.
Will a powerglide torque converter fit a TH350?
As long as the Powerglide is equipped with an input shaft that features a Turbo spline (30 spline), then the torque converters will freely interchange between the PG, TH350, and TH400 transmissions.
How can you tell the difference between a Turbo 350 and a Turbo 400?
The TH-350 uses a square pan, with one corner cut off. The TH-400 uses an oblong-shaped pan with one side having a “hump” in the pan and one side is curved while the other two sides are straight. The TH-400 pan also has two circular indentations on the humped side of the pan. Measure the transmission.
Does a TH350 have lockup?
The short answer is yes.
Is a TH350 a good transmission?
The TH350 is an automatic shift, three-speed transmission. It is widely considered to be one of the greatest of automatic transmissions ever built. The Turbo 350 is the shortest and one of the strongest automatics that can be put into a Jeep.
How do I know if my TH350 is good?
If not drivable, look at fluid color and also smell the fluid. Burnt fluid will have an obvious odor to it. I’ve had good luck over the years picking good tranny’s just by smell. Pulling the pan is also a good thing to do.
How much HP can a TH350 hold?
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.
How much HP can a TH350 handle?
What’s the difference between th 350 and th350c?
TH350 and a TH350C have different cases, input, converter. The C has lock up. Shouldl work if you want lockup. Click to expand… James, can you tell me what lock up means?
When did the GM TH350 lock up converter come out?
At the right rear of the case is the modulator. The TH350-C was the lockup torque converter version introduced in the late 1979 model year, and was produced through 1984. This later version had an electronic lock-up converter to increase fuel-efficiency at cruising speeds.
What kind of transmission does a Chevy TH350 have?
This “BOP” version features a “valley” at the twelve o’clock position of the block flange where the peak would be on the Chevy (pictured) version. The top dog of cool TH350 transmissions is the TH350C Unicase version, featuring both a Chevy / BOP pattern and a lockup torque converter.
Where is the pressure switch on a TH350?
I think the pressure switch you are asking about is the vacuum modulator. It helps control your shift points and should be hooked to a vaccum line from your carb. Click to expand… This is right beside the cooling lines, the vacuum modulator is in the rear of the transmission.