GV overdrive
Posted: Fri Dec 16, 2011 6:28 pm
by travistoronado
how would i and where would i get an GV overdrive to help the fuel economy of my 67?
also is it difficult to install the electronic fuel injector?
Re: GV overdrive
Posted: Mon Dec 19, 2011 10:03 am
by xgecko
I strongly doubt you can install any kind of overdrive as it would have be incorporated into a highly customized final drive - remember, these cars are FWD and there is no driveshaft between the final drive and the transmission which is where the GV overdrives are installed. The closest thing to an OD is to change the chain gears on the back of the trans to something other than a 1:1 ratio. There is a now-defunct kit of some sort that does this, you can track it down through the GMC motorhome community.
As for fuel injection, if you go with a throttle-body design, it is as simple as making sure the particular throttle body in question will fit under the hood then it is just a matter of installing any sensors such as the O2 sensor and, depending upon the kit, tuning the fuel injection to the right fuel-air map.
I am going with a much more complex system that requires the aluminum intake made by Gary Rockwell which has injector bosses cast in.