Re: Anyone install a Gearvendor Overdrive unit
My Gear Vendors gear splitter works great. I've never had a problem for 5 years. It just bolted onto the C6, and a new driveshaft and that's that. The C6 has the 5 and 6 clutch plates and the 1/2" wider band, and it's a state of the art all aluminum, 482ci 427 with an enormous amount of horsepower and torque. A lot more than a normal 500hp mediujm riser 427, which I have 300,000 miles in.
The advertising is kind of deceptive, saying it's a 6 speed. In a race, you would never ever use more than 4. 3.5 really. 1, 2, 3, 3.5. I just use it as an overdrive. Sometimes I put it in second and switch between 2 and 2.5 for city driving, using the floor switch. I guess pulling a trailer up Fancy Gap in the Smokies, it would be nice to pick from 6 gears. If you try to use all 6 in a race, which doesn't work, and you got confused and hit the floor switch wrong, it could overrev the engine.
It has a thing where you can start it first, then it switches from 1 to 1.5 to 2.5 to 3.5, but I would only use it on a drag strip, where 2.5 is the right gear for the end of the track, and there's good traction. It's a real hard shift, and breaks the tires loose when you hit 1.5 on that first shift. But this engine squeals the hell out of the tires in a normal automatic shift at 4000rpm and half throttle, and risks spinning them on a bad road at 6000 rpm, so the much harder shift into the power band is only if you want to impress observers by lighting up the tires in second. Which, with posi, is suicidal.
Like an aluminum engine, it's all plusses, no minuses, I'd strongly recommend the product.