Saginaw 4 speed identification

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With original Borg-Warner and Muncie four-speed transmissions becoming scarcer as time passes, GM enthusiasts are looking for other inexpensive four-speed transmission alternatives that can be easier to find without breaking the bank. The Saginaw four-speed fits that role nicely, and the additional gear can save you a little money at the pump as well. Saginaw four-speeds were manufactured from '86, and you can still find them in abundance at your local salvage yard or in many '60s, '70s and '80s donor cars. The four-speed transmission is very similar to the tried-and-true Saginaw three-speed and fits well behind six-cylinder and eight-cylinder engines. It was originally designed for engines generating less than hp; however, upgrade parts are available to make it more compatible with higher horsepower applications.

Saginaw 4 speed identification

Discussion in ' ' started by Blueflame , Dec 15, Log in or Sign up. Classic Parts Talk. Need help to decode Saginaw 4 speed transmission Discussion in ' ' started by Blueflame , Dec 15, Joined: Mar 29, Messages: 1, Location: Norway. Hey guys I could need some help to decode this tranmission. The seller told me it whas in a Camaro? What i have is; Saginaw 4 speed 2 grooves ; 1st. Last edited: Dec 16, Blueflame , Dec 15, They know them forwards and backwards. Sorry Martinus But I only know they made and used this fine tranny for decades and they're dead simple to overhaul , often not needing any new parts , just a good cleaning then mix and match parts from the old tranny. I had to do this on a ?

Camaro Info. Privacy Policy. It has a six-speed manual transmission and makes horsepower.

It's important to note the RPO code of M20 was used for both the aluminum case Muncie 4-speed as well as the cast iron Saginaw 4-speed. Just which transmission you got is dependent on the year and horsepower rating of the engine. For example, the Saginaw 4-speed didn't come into play until the model year. Typically any V8 with an advertised horsepower rating of less than hp got the Saginaw while hp and above got the Muncie; both were ordered under RPO M Early Muncie side covers had a stud and the shift arm attached with a nut on the stud while the and later model side covers had a hole and the shift arms attached with a bolt.

With original Borg-Warner and Muncie four-speed transmissions becoming scarcer as time passes, GM enthusiasts are looking for other inexpensive four-speed transmission alternatives that can be easier to find without breaking the bank. The Saginaw four-speed fits that role nicely, and the additional gear can save you a little money at the pump as well. Saginaw four-speeds were manufactured from '86, and you can still find them in abundance at your local salvage yard or in many '60s, '70s and '80s donor cars. The four-speed transmission is very similar to the tried-and-true Saginaw three-speed and fits well behind six-cylinder and eight-cylinder engines. It was originally designed for engines generating less than hp; however, upgrade parts are available to make it more compatible with higher horsepower applications. Saginaw transmissions distinguish themselves from the Muncie four-speeds because the cases are cast iron rather than aluminum. Another quick way to determine a Saginaw is that the shifter arms are all located on the side cover of the transmission case Muncie reverse arms are located on the tailshaft. GM unit designations for the Saginaw four-speed are M26 or M For swapping into classic GM cars and trucks, we will only reference the rear-wheel-drive versions.

Saginaw 4 speed identification

They were popular in the Muscle Car era. As a rule of thumb, they were not built to handle the kind of power that a Muncie transmission could handle. So, if you are looking to drop one in a vehicle that makes more power than it did when it was stock, you should consider going a different way. Lets get straight to it! Far and away the easiest way of telling them apart is what the transmission is made of. The Saginaw was made out of iron.

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Note that V-8 bellhousing bolt patterns are different for the Chevrolet than for the Buick, Olds, Pontiac and Cadillac. Another misconception is if you have a drain plug you have a M Install the app. Active since January 24, - Today is This Chevrolet website is not designed to help you locate a car you owned years ago. The TMI Design studio offers potential customers a chance to see, touch, and even sit in each of the seats from the product lineup as well as get a tactile sense of what their car's interior could be. New posts. Note that a Muncie dated with a September to December build date was actually built the prior calendar year. The rear seal started to leak after 12 years, so I may rebuild one of my spares. Note the shift arms are held in place by bolts. I told hurst it was a saginaw 4 speed and it was going into my 80 z28 but they said they needed to know what year make and model the tranny came from. Log in or Sign up. If there are NO rings on the input shaft, it's a 2. The M22 transmission has a 20 degree helix angle on the gear set as opposed to a 45 degree angle found on the M20 and M21 and were made with a higher nickel alloy.

The Saginaw three- and four-speed manual transmissions transmitted engine power to the wheels on General Motors non-performance and mid-range performance cars. The transmissions were cast-iron and stamped with an application code. Both versions of the Saginaw transmission featured the case and extension housing sealed with a seven-bolt cover on the side.

Trying to identify sp I can order a shifter. I've tried to weed through as much of this as I can and bring you the consensus of what's correct. Home What's new Latest activity Authors. This website is the sole property of WBD. If there are NO rings on the input shaft, it's a 2. Sell Other. Your name or email address: Do you already have an account? Change style. Joined: May 9, Posts: 2, Profile Page. Since the M20 and M21 look the same one way to tell them apart aside from the grooves on the input shaft is the tooth count on the cluster gear. Likewise a P8S28 stamp means 8 , September S , 28th of the calendar year for a Chevelle. This Jensen Healey does a bit more than car shows we'd reckon. Camaros for Sale. About Hemmings. Transmission Identification to Muncie 4-speed transmissions can be identified from later models by the way the transmission arms attach.