The Turbo 350 automatic found its way into Chevrolet Camaros, Pontiac Firebirds and Chewy and GMC trucks. Although the transmission most notably matched GM vehicles with small-block V-8s, it also matched the block-block 396 V-8s, V-6s and the small Iron Duke in-line four-cylinder models.
What year vehicles have a Turbo 350 transmission?
To name a few, this transmission was used in the Caprice, Chevelle, Corvette, Blazer, and Nova. The TH350 was introduced in 1969 as a replacement to the Powerglide 2 speed automatic transmission. While the phase-in began in 1969, it was not complete until the 1973 when the Powerglide fully phased out.
How do I know if I have a Turbo 350 transmission?
You’ll know it’s the TH350 if you have the fitting attached to the right frontal side of the transmission. However, it is the TH400 if this fitting is at the transmission’s front-rear side.
How much horsepower can a Turbo 350 transmission 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. Both transmissions come with a standard one-year warranty.
Is a TH400 better than a TH350?
The TH350 uses a mechanical kick down switch, whereas the TH400 uses an electric one. … A lot of people claim that he TH350 has less drivetrain loss than the TH400, which means that all things being equal, the TH350 is going to get more power to the rear wheels from an engine with equal power.
How do I know if my Turbo is 350 or 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.
How much does a Turbo 350 transmission cost?
A good TH350 is going to cost more than $200. I spend more than $200 on parts to rebuild one (stock) and I get good pricing on the parts since I’m a transmission shop. This doesn’t upgrades, labor, shop overhead, etc. The days of having an automatic transmission rebuilt properly for $200-400 are done.
Does a Turbo 350 transmission 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.
How much power can a Turbo 400 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.
What’s better 700R4 or Turbo 400?
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.
How reliable is a TH350 transmission?
The THM 350 and 400 are both extremely reliable. The 400 is the better choice for big block and heavy vehicles. I have a 350 in my heavy Buick and am pleased….but….if I did it over again I’d go with a 700R4 because on the highway it lets you run a lower rpm if you have a shorter rear gear.
Will a powerglide bolt up to a 350?
The powerglide should be fine with the 350 unless it is an air cooled version.
Will a TH400 bolt up to a 350?
You might be able to swap that B-O-P T-400 for a Chevy T-350. The T-350 is lighter and will offer less internal drag, so the swap would benefit you. A PowerGlide loses about 18 horsepower to parasitic drag, a T-350 comes in at about 38 horsepower and a T-400 requires about 45 horsepower.
Will a Turbo 350 replace a powerglide?
A short tailshaft turbo 350 is a direct bolt-in replacement for a powerglide. You will need a torque converter designed for a turbo 350 and a different shifter.