will the g tech pro work with a 66 289? If so, how does it work? i still dont really understand it

 

It should work on any car. It uses an accelerometer. An accelerometer senses the amount of acceleration and automatically plots that against time. That will give you quarter mile times. I've heard they work pretty good. Never used one myself.

 

I do work with accelerometers in the Navy and they are suprisingly very accurate.

 

it worked on my 68! but im not sure on 66?

 

I was thinking about getting one of these dash mount accelerometers, but I was leaning more toward the Beltronics Vector FX1, simply because it was less money, and seemed to have all the functionality that I needed. I was also looking at the Escort Passport G-Timer GT1, but to me, these two seem like exactly the same product, just in a different case. The promo video even is the same!

 

I have the GTech Pro SS, but im not getting very good readings. Ive been getting like 190 on the hp runs, and low 15s out of the thing. I know im hitting better than that. I think the problem may lie in my suspension stiffness adjustment. how does everyone else have theirs set up and how close are they?

 

To get that dont you have to put in the weight? What are you putting in?

And yeah, it should work in any car, and I dont see how the suspension would mess with it. Theres still movement and force applied.

 

I love mine. Usually real close but you must put the correct info in and calibrate it.

 

The suspension stiffness calibration determines how sensitive it is during takeoff. if you have it wrong i think it wont start counting right away when you launch and will give you longer ETs.

 

Keep in mind that it gives you the net horsepower (ie calculated from how long it took to move a certain mass a certain distance), not the amount of horsepower that your engine produces like if it was directly hooked up to a dyno. All the losses from your suspension, drivetrain, wheelspin, and the like are included in the value you get from the accelerometer.

So getting a horsepower reading that seems too low is not as bad as it may seem.