Is this ok to do? I have a 1" carb spacer right now and I'm considering a new NX plate system. Can they both be used together? If so, which one should go on top of the other? Hood clearance is not a problem.

 

I have a 1" open spacer with my NX plate on top... works perfectly fine.

 

i have been running my spacer on top of my nx plate. ran 11.36 on motor and 10.31 on a 150 shot. with the spacer on top it makes it real easy to change jets. i thought i would try it with the plate on top this year though. when i talked to nx on this very question they said to do test spray and see how it fills the manifold with the plate in both positions.

 

finally kevin.....stepping over to the dark side. it's about time.

 

Should be fine, you are just increasing plenum volume. Just make sure it seals.

 

I wasn't planning on nitrous until my rich brother-in-law ordered a new Z06. With spray, I should be able to spank him at will (at least in a straight line).

I have a dual-plane intake (Performer RPM) and a 4-hole carb spacer, not an open one. Is this going to be detrimental to the nitrous charge?

 

under 150 shot i think you'd be fine on a dual plane, when you get up into the big daddy shots then you'll want a single plane like a vic jr. since that nitrous plate runs a 1/2" alone by itself, i think you could ditch the spacer and try tuning your car at the track with each setting to see how the car responds, not using the butt o meter instead. typically 4 hole spacers are better for low end torque, but if you're blowing the tires off, possibly switching to a open spacer or no spacer at all would be the way to go. Typically after all jetting is determined then a spacer comes into play to get that last little bit out of the motor.