You certainly should not depend on the tech working at the yard for confirmation of what you have. Since you are going to replace the transmission anyway, it might be time to upgrade to a Turbo 400 transmission. Nearly all of the have a few things in common. This is almost always cause by the vacuum line that runs to the modulator from the intake manifold. . I told him i know what the pan looks like. They utilize a kick down cable, and they both use the same bellhousing bolt pattern.
I promise you that the next transmission I have to replace or any other person I hear of needing a transmission I will be heavily promoting Monster Transmission and tell them that I personally use Monster Transmission. Turbo Hydra-Matic 350 - 1976-1981: Code stamping located on the right-hand vertical surface of the transmission oil pan. The original Chevy housing was 7 bolt and that's why their trans housings have a peak. Used on large displacement, high torque engines and engines with towing packages. Look at the transmission pan.
The Code Number stamped on the tag will begin with the last two digits of the vehicle model year; vehicle and engine type code from chart; ending with three digits representing a modified Julian calendar date of manufacture code. All of the automatic transmission rebuilding video's out there start off with the transmission already out. You will also need a good work space and transmission stand. Before you get started rebuilding your transmission, you'll need a few parts and tools. Any help would be great, thanks. The Th350 is basically a square with a corner taken out of it. The Chevy Turbo 400 transmission also comes with optional military specs that are perfect for mudding, four wheeling, and rock crawling.
This number was often stamped near the production code on manual transmissions; either on the raised boss on the right forward side of the case or on the left side lip of the bell housing flange on automatic transmissions. The sequence then continues until the end of the model production year. When it shifts from 1st to 2nd its got a really smooth shift and it puts a smile on your face. This three-speed medium-duty automatic was used primarily with six-cylinders and small-block V-8s. Although the has been phased out for more than 20 years, you can still find one in the salvage yard. The Turbo 400 is compatible with most Jeeps. As the successor to the Powerglide, it was produced until 1989.
This build date code begins with the Julian date day of the year on which model-year production started. Most of the time they are not. Turbo Hydra-Matic 400: For quick identification, the modulator assembly is located in the right front area of the transmission. This is a 4 speed, overdrive unit. Every automatic transmission will need a universal clutch spring compressor as well as snap ring pliers and pic sets for removing valve guides. Generally used in straight and V6 and small block engines. Generally able to handle up to 400 foot pounds of torque.
This is a fine way to whittle what you have in front of you. There are a variety of options available from crate set ups to custom builds and even stock replacements. It is machined into the transmission in most cases. Others have a tag rivited to the case. Chevy Automatic Transmission Identification: Other Methods Some transmissions have a code stamped onto them.
It has not been produced for quite a while and is considered pretty rare. A Chevy Turbo 400 Transmission can add the power and life back to your favorite car. The Turbo 350 has a basically square pan with one corner cut off. Turbo Hydra-Matic 350: For quick identification, the modulator assembly is located at the rear of the transmission case. Notice that even though it's still a 6 bolt pattern the second hole up from the bottom on both sides is for a guide pin, not a bolt it's wildly different from the later 'standardized' patterns. This version did not have a locking converter. As you disassemble your transmission, make note of any obvious wear to parts that may need replacing.
So it's definitely something you want. This identified the model year, engine type, date, and transmission serial number. That would put it squarely in the second era, and this is how it went. The became the 4L60 and so on. Turbo Hydra-Matic 700R4 - 1982: Code stamping located in the case on the right-hand side of the oil pan rail.
I have no idea if this pattern is found on anything besides Nailheads. We are dedicated to giving you the technical support you need, when you need it! Here it is, Notice that it looks like a box with a slice taken out of the corner. The better kits will also include new valves and valve springs for the valve body. The 350 transmission is easily identified visually, by counting the pan bolts and by locating transmission number. The accumulator cover is a small, round dome-shaped cap, located in the middle of the transmission.
A Chevy bell has two bolts on each side aligned vertically with the respective alignment dowel. Transmissions are marked and identified by: - Casting numbers on the case, extention housing and side cover on manual trans. This page covers automatic trannies. Usually included are all the bands, clutches, seals, sealing rings, gaskets and a filter and drain plug. It was introduced for the 1965 model year and made its debut in Cadillacs, and is respected for its durability and adaptability. Please join in the discussion by. United States Army Drill Sergeant J.