RPM Window Switch

[Mike Brunton]

Freddie,

You say you are looking for an RPM window switch - I assume it's so you can run Nitrous?

If that's the case, I would be careful about using Sean Roe's VEC1 and NOS together. I am sure Sean will weigh in on this, but as far as I know, the VEC1 works by leaning out the fuel mixture a little bit to provide more power. This is perfectly Ok on a normal car, but when running NOS, you want as rich a mixture as you can get. Leaning it out is the first step to blowing your motor.

I hope Sean can provide some insight here... if the VEC1 and NOS are not compatible, then perhaps there are other alternatives?

 

[Bill/APEX Motorsports]

Jegs is like Summit--if your question isn't about a late 60's Chevy, their standard reply is "Sure, it'll work!"
The RPM window switch is from Mallory? Or is it MSD? If it's from Mallory, it's most likely made by MSD anyway. It won't work in its current configuration. It will have to be recalibrated for your V10, which means they calibrate it for 2-cylinder operation. Yes, 2-cylinder. We recently had to do that for Ben's nitrous application.
Call MSD/Autotronic at (915) 857-5200 (El Paso, TX), and ask them if they make the switch for Mallory. If so, send it in to MSD.

 

[Bill/APEX Motorsports]

It's not that simple. The switches should work on 4-, 6-, or 8-cylinder engines but have to be modified to work on 10-cylinders. Hence the special 2-cylinder operation. I know of no window switch that'll work out-of-the-box with the Viper.

 

[Bill/APEX Motorsports]

I'm not sure if MSD sells directly to the public or not. We sent in our box, and they modified it for like $65. It took about 10 days, even though I sent it Next Day Air there and back. Call them and ask what you should do. Good luck!