How much gear oil does a SM465 take?
I’m pretty sure it is right around 4 quarts.
What fluid does a SM465 take?
The SM465 should use the hard to find GL-4 lube. GL-5 or newer lubes can be corrosive to the synchronizers in older type transmissions. Use mineral oil from Napa, they sell it by the gallon.
How much oil does a Muncie transmission hold?
Make sure the transmission is level. The Muncie 4-speed transmission will take about three pints, or 1 1/2 quarts of oil. Replace the fill cap.
What does SM465 stand for?
SAGINAW MUNCIE
“SM” stands for “SAGINAW MUNCIE”. GM literature also often referred to this as a CH465, referencing Chevrolet.
How heavy is a SM465?
SM465 vs. SM420
| SM465 | SM420 | |
|---|---|---|
| Length(in.) | 12.0 | 10.4 |
| Height (in.) | 18.0 | 17.0 |
| Weight (lbs.) | 175 | 135 |
| Input Shaft | 1 1/8-in., 10-spline or 1 1/2-in., 10-spline | 1 1/8-in., 10-spline |
When did the GMC SM465 transmission come out?
The Muncie SM465 is a heavy-duty, four-speed manual transmission built by General Motors for use in light and medium duty trucks from 1968 to 1991 at the factory in Muncie, Indiana. The SM465 can be found in Chevrolet and GMC full-size trucks, Blazers, Suburbans, among other models.
What kind of oil to use for SM465 transmission?
About the SM465 When filling your 465 with gear oil, we recommend that you select a conventional mineral oil or a para-synthetic in lieu of a full synthetic oil. Properly assembled manual gearboxes do not have the thermal strains seen by combustion engines or hypoid gears.
How big is the pilot shaft on a GM Muncie SM465 transmission?
The SM465 has a 1-1/8″ diameter, ten spline input shaft that has a stick-out of 6-1/2″ from the front face of the transmission. The pilot tip is ~19/32″ in diameter. The front bearing retainer flange measures an unusually large 5-1/8″ in diameter and the bearing retainer tube is 1-3/8″ in diameter.
Is the GM Muncie SM465 transmission of cast iron?
The SM465 is a top loaded, top shifting truck style transmission. This transmission is 12 ” long and features a cast iron top cover that is retained by eight bolts. The SM465 case is of cast iron. The case itself is generously ribbed both vertically and horizontally.