M30 Transmission

The M30 transmission is a variation of the venerable 4L60E transmission, and is manufactured by General Motors.  It has four forward gears, the third of which is a 30% overdrive.  M30 itself is a RPO code.  It stands for: M30:   TRANSMISSION, AUTO 4 SPD, HMD, 4L60E, ELECTRONIC There is a different RPO code for every … Read more

700R4 4×4

The 700R4 is a very popular transmission in 4×4 trucks.  It is both proven and rugged.  They can be found all day long in the salvage yard at a very reasonable price.  If you are looking for one just keep in mind that the factory units are typically going to found in a Silverado or … Read more

Transmission Coolers

Many transmissions have a harder life than the manufacturer had originally intended.  Whether it has found life in a street machine, or it is in a tow truck, a transmission cooler can really help keep a transmission running better for longer.  Transmissions wear out incredibly quickly when the fluid gets over the ideal operating temperature. … Read more

Concerning Hondas…..

This is somewhat off of the subject for this site, but on the way home from Gulf Shores last week my wife’s 2008 Honda Fit(It married into my garage) lost 5th gear and the D light started blinking on the column.  It’ll go into a sort of limp mode.  We noticed some really rough shifts.   … Read more