Here is a project thread I have been writing on a couple of other boards.
As some of you know I have purchased a Gearvendors Overdrive unit for my 66 Fairlane Hardtop. So I thought I would do a thread on fitting the unit to the C6. For those not familiar with the Gear Vendors units they have been around a long time and I have had my eye on them for ten years or so. With the strong dollar I could no longer help myself.
Information here.
http://www.gearvendors.com/Fairlane currently runs 3.89 gears with 27" tyres and a 3500rpm flash stall. Long term plans include a mellower cam lower stall and forced induction. For a few years I have been alternating between 3.89's and 3.55's, but no more. With this unit engaged it will make my 3.89's feel like 3.00's and should make the car more user friendly on longer runs not to mention the fuel and engine wear savings.
Service was good over the phone and the kit despatched in 2 days and arrived about a week after that via UPS.
Here is a pic of the entire kit (uncle Jack's magic elixer was an optional extra :yummy: )
Overdrive unit itself. Uses planetry system and internal pump like an auto trans.
Control unit. Can be mounted hidden away as access is not required.
Supplied with new yoke and speedo drive uses TH400 plastic gears. They supply a gear to suit your rear end and tyre size. They also threw in another freebie gear for a smaller tyre size.
Normally supplied with an auto is the floor mounted switch on the left but they also threw in the shifter button in case I want to use that. Also in picture is the rocker switch with two lights connected to switch between modes. This is to be dash mounted.
Seen in this pic is the speed sensor and Ford speedo cable adaptor. You keep your original speedo cable.
As the weather is now turning in Adelaide the Fairlane is coming out of its winter hiatus. I want to drive it for at least couple of weeks just to check over everything before I fit this unit.
First issue is the adaptor. The coupler slides into the bush nicely until it reaches about 040" from exiting the bush on the inside. It then locks up pretty tight, will no longer rotate and takes much force to push through. I will phone them and seek a response but the inner section of the bush will need work as it is just way too tight.
Coupler inserted until it nips up.
Bush
Manual is ordinary and looks like it was done by a computer novice 15 years ago (probably was). They should do better.