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Tremec Overdrive Transmission - Full-Size Gear-Jammin'

We Show You How To Hit The Highway With A Tremec Overdrive In A Classic Impala.

By Mike Harrington
Tremec Overdrive Transmission

The transmission is temporarily installed again and the offset shifter is tightened into place.








Tremec Overdrive Trim Carpet

Up top in the cab, the carpet is trimmed away in order to make room for the shifter's new position.








Tremec Overdrive Clearance Issue

Here's why the new Tremec is temporarily installed. There are slight clearance issues with the top of the transmission and the tunnel in which it sits.







Tremec Overdrive Hammer

Fret not about the clearance issues in the trans tunnel. Grab a 5-pound hammer and create some new real estate. Draw a line where the tunnel needs to be peened out and have at it. It really is easier than it looks or sounds.





Tremec Overdrive Tunnel Made

Now that the tunnel has been pounded into submission, the new TKO-500 is ready for its final install. Needless to say, all the hardware, including the new speedo cable, is provided from Classic Chevy 5-Speed. If new aftermarket gauges are being used, a VSS (Vehicle Speed Sensor) will need to be ordered at the time of purchase.




Tremec Overdrive Tubular Transmission

The new tubular transmission crossmember is also provided in this kit. Not shown in the photo is the transmission mount/bushing.







By Mike Harrington
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55Guy
Matt, because it's an Impala, pretty much any Muncie or T-10/Super T-10 will fit in your '65. Same thing for late model T-5s, T-56s, etc. I'd suggest calling AMerican Powertrain, they offer the installation kits necessary to fit a manual trans in a classic Chevy.
Matt316
does anyone know what yrs would be best to get a manual trans to fit in mt 65 impala
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