Is a Turbo 350 hard to rebuild?
This chapter is one of the most important in this book. Transmission rebuilding is not overly difficult, but it does involve attention to detail, and exact precision in every area.
Are all TH350 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.
Which transmission is better TH350 or th400?
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. That doesn’t mean the Turbo 350 is weak in comparison.
How many quarts of transmission fluid does a TH350 take?
4
| Transmission Fluid Capacity | |
|---|---|
| Transmission (w/ Stock Pan) | # of Quarts |
| GM TH350 | 4 |
| GM TH400 | 6 |
| GM Powerglide | 4 |
What transmission should I use with a Chevy 350?
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.
How much HP can a TH350 handle?
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.
Does a Turbo 350 have overdrive?
Overdrive. The 700R4 has an overdrive while the TH350 does not. Overdrives allow for high-speed cruising, which saves fuel while lowering torque.
What does the band do in a TH350 transmission?
Bands are used in transmissions to stop and hold clutch drums or other major internal components from turning. The intermediate band in the TH350 transmission is around the direct drum and the upper end of the band fits into a notch in the case to keep it stationary when the servo is applied.
Where can I rebuild my GM Turbo 350?
There is no need to carry your TH350 off to a shop or to someone with more experience. A complete and correct rebuild can be accomplished in a small shop or garage. Anyone taking on the task simply needs to be armed with good information, a few tools that I describe, and good parts.
Is it possible to rebuild a GM TH350 transmission?
The good news is that most of what is needed to rebuild the TH350 transmission is already in the average homeowner’s toolbox, or can be fabricated quickly from readily available materials at minimal cost.
When to use awl in GM Turbo 350 rebuild?
An awl is handy for transmission rebuilding. It can be used to help line up bolt holes with gaskets and separator plates when installing the valve body, and also to remove the snap ring that retains the 1-2 accu-mulator in the TH350 case.
What to use to remove retaining ring on GM Turbo 350?
Use an awl to remove the retaining ring for the TH350’s accumulator piston cover. To fabricate one, all you have to do is grind the tip of an old screwdriver to a sharp tapered point with a bench grinder. An awl with a sharp point also makes a great tool to remove the solid factory Teflon sealing rings on accumulators and servos.